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About PostHog We're shipping every product that companies need to run their business from their first day, to the day they IPO, and beyond. The operating system for folks who build software. We started with open-source product analytics, launched out of Y Combinator's W20 cohort. We've since shipped more than a dozen products, including: A built-in data warehouse, so users can query product and customer data together using custom SQL insights. A customer data platform, so they can send their data wherever they need with ease. PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries. Next on the roadmap are CRM, messaging, revenue analytics, and support products. When we say every product that companies need to run their business, we really mean it! We are: Product-led. More than 100,000 companies have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit. Default alive. Revenue is growing 10% MoM on average, and we're very efficient. We raise money to push ambition and grow faster, not to keep the lights on. Well-funded. We've raised more than $100m from some of the world's top investors. We're set up for a long, ambitious journey. We're focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible. Things we care about Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions. Autonomy: We donâ't tell anyone what to do. Everyone chooses what to work on next based on what's going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed. Shipping fast: Why not now? We want to build a lot of products; we can't do that shipping at a normal pace. We've built the company around small teams â- autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end. Time for building: Nothing gets shipped in a meeting. We're a natively remote company. We default to async communication â- PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you've ever had. Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We're optimistic about what's possible and our ability to get there. Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it's fun. Who we're looking for We're hiring for a range of roles here. What you end up working on will depend on your exact skillset and preferences, so choose your own adventure. In general we seek Product Engineers who are: Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. This is what being a product engineer is all about. "Are we there yet?" is the wrong question. Optimistic problem solvers. Things get hard here sometimes â- whether it's scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won't get disheartened, and will collaborate, iterate, and ship their way out of anything. Grown ups. Weâ're an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn't about age or experience, it's about being low-ego, flexible, and respectful. Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn't a paycheck at the end. If this sounds like you, we should talk. Right now, we are also looking for: IAM specialist: Youâ'll design and ship core features like SAML support, new identity providers, and even our own IAM system. Start with internal tooling, then roll them out to customers. Tell us how youâ'd make these systems so solid that other teams can build on them without hesitation. What you'll be doing Owning products and features from beginning to end. This means originating ideas based on your intuition, talking to users, and understanding our strategy and goals. It means testing MVPs in production with real users. It means iterating on their feedback, owning pricing, and ensuring the ongoing success of your work. Collaborating with design (when necessary). Product engineers at PostHog are full stack, so we expect you to ship and own the basic UX of your work using our design system. From there, it's up to you to decide when to collaborate with our design team to iterate and polish the experience. Talking to users. Good product engineers read feedback from users and iterate quickly. Great product engineers have users they're friendly with, talk with them frequently, bounce ideas off them, and iterate with them when they ship new things. Doing support. Every week, one person in each engineering team is designated the Support hero. Their job is to investigate and resolve issues reported by customers for their product. Giving users support from real engineers, and shipping fixes and improvements in real-time, is one of the best ways to spark joy in users. This role will also include some on-call time, too. Writing docs. We have a content team that will collaborate with you on reviewing, polishing, and improving your documentation, but the best person to document a new feature is the person who built it. Requirements Full-stack experience with relevant technologies â- e.g. Python or similar, React or similar, something to do with big data is a bonus. Experience taking a project from 0 to 1. You might have led a project, been a founder previously, or built an impressive side project. Strong writing skills. We document everything, most of it publicly. The ability to communicate your ideas and make persuasive arguments is essential. Nice to have Have worked at a high-growth SaaS company before. Extensive knowledge of Django and/or TypeScript-based React. Experience building AI-native products, or integrating AI into existing software. If you have a disability, please let us know if there's any way we can make the interview process better for you - we're happy to accommodate!

Product Engineer

Product Engineer at PostHog

About Helius Helius is building the core infrastructure for Solana - empowering developers to create the next generation of crypto-powered applications. Our mission is to accelerate the development of internet capital markets by making it easier, faster, and more intuitive to build on-chain. Thousands of teams - from early-stage startups to industry leaders like Coinbase, Phantom, and Jupiter - rely on Helius APIs, webhooks, and indexing tools to power their products. Backed by Haun Ventures, Founders Fund, and Foundation Capital, weâ're a small, senior team obsessed with performance, simplicity, and scalability in decentralized systems. Read our Helius Manifesto to see how we work and what we value. About the Role Weâ're looking for a Sr. Full-Stack Engineer to own the most critical parts of the Developer Portal: onboarding, configuration, enablement, and observability. These surfaces are instrumental to providing a top-tier customer experience, maximizing conversion and retention. The expectations are high, decisions move fast, and the work you ship will be used immediately by thousands of developers. Youâ'll work across React, TypeScript, Next.js, Golang, and Postgres. Youâ'll partner closely with founders and product leadership, raise the bar on quality, and take full ownership of features end-to-end. What You'll Do Create clean, fast onboarding flows that directly drive conversion and activation Build scalable backend services that power our user-facing applications Drive technical decisions around frontend architecture, state management, and API design Improve performance, reliability, and long-term maintainability across the stack Move quickly, make strong product calls, and simplify complex problems What You'll Bring 5+ years of full-stack development experience in production environments Strong proficiency with React and modern frontend development Strong backend experience with languages like Golang, C#, Java, or Rust Experience building and maintaining REST/GraphQL APIs Experience with database design and optimization Strong system design and architecture skills Understanding of CI/CD practices and DevOps principles Demonstrated ability to work autonomously and execute at speed with excellent communication and collaboration skills Nice to Have Prior experience building and maintaining billing systems Prior startup and/or web3 experience Solana development experience Understanding of web security best practices Why Helius? High-impact work: Your code will power applications used by millions across the Solana ecosystem, including Coinbase, Jupiter, and Phantom Serious engineering: Build fast, reliable systems and user experiences across distributed infra, high-throughput backends, and modern frontend stacks Ownership & growth: Lead critical initiatives, influence architecture and product direction, and take on more responsibility as the company scales Remote-first flexibility: Work where youâ're most effective with a flexible, fully distributed team Competitive comp & perks: Market-leading salary, meaningful equity, generous vacation, wellness budgets, and support for learning and travel Mission-driven team: Join ambitious builders who move fast, take ownership, and are shaping the future of decentralized apps

Full Stack Engineer Developer Portal

Full Stack Engineer Developer Portal at Helius

DescripciÃ³n: Experiencia comprobada en Angular 17 (nivel alto). Experiencia avanzada en Javascript (nivel alto). Conocimientos y experiencia prÃ¡ctica en PHP (nivel medio). Solo frontend para maquetado con Symfony Responsabilidades: Desarrollar y mantener aplicaciones web utilizando Angular y Javascript como tecnologÃ­as principales. Crear componentes reutilizables y optimizados para mejorar la escalabilidad del sistema. Colaborar en la definiciÃ³n y evoluciÃ³n de la arquitectura de la aplicaciÃ³n. Gestionar el flujo de trabajo con Git siguiendo el estÃ¡ndar Gitflow. Asegurar la calidad del cÃ³digo mediante buenas prÃ¡cticas, revisiÃ³n entre pares y pruebas. Documentar las implementaciones y procesos tÃcnicos. Experiencia comprobada en Angular 17 (nivel alto). Experiencia avanzada en Javascript (nivel alto). Conocimientos y experiencia prÃ¡ctica en PHP (nivel medio). Solo frontend para maquetado con Symfony

FRONTEND ANGULAR SYMFONY

What weâ're building Weâ're empowering small teams with technology that makes it easier to market and grow businesses. Our current focus it to help consumer brands shift from "workflow automation" to "agent managementâ" within their marketing operations. Matter is the AI coordination layer â— providing shared AI memory, centralized agent control, and model differentiation. We founded the company based on a decade of experience providing marketing services to 300+ consumer brands, leveraging that expertise to develop interfaces that streamline user experience in the era of AI. Why join Matter? Founding Engineer Equity You'll get a meaningful equity stake; early-stage and undiluted. Product Ownership You'll ship production code daily and help steer key product and technical decisions. Shape the Engineering Culture You'll influence how we workâ—tools, processes, standards, and hiring. Work with Challenger Consumer Brands Talk directly to customers (CEOs, CMOs, VP's) of fast-growing consumer brandsâ—some doing $80Mâ-$500M in revenue. Don't join Matter if... Work-life balance is a high priority for you You're uncomfortable changing your priorities every 24-48 hours You're not confident in your abilities to manage end-to-end solutions You require a many devops resources to be successful About the Role You'll sit squarely at the intersection of backâend and frontâend, ensuring seamless integration between APIs, databases, UIs, and ML services. You'll design, build, and scale features endâtoâend, especially our AI/MLâpowered experiences, while mentoring peers and driving architecture decisions. Core Tech & Tools Languages & Frameworks: Python, Node.js, React (TypeScript) Datastore: PostgreSQL Cloud & Infra: Google Cloud Platform, Airflow, Terraform, Docker, Kubernetes ML/AI: LLMs, RAG, prompt engineering Other: MCP Key Responsibilities Architect and implement fullâstack features, from database schema to React components, optimized for scale and reliability. Build and maintain RESTful/GraphQL APIs, data pipelines, and distributed services in GCP. Integrate, prompt, and debug LLMs and generative AI tools; own RAG or fineâtuning pipelines. Ensure frontâend and backâend systems interoperate flawlessly, minimize friction, optimize data flow, and enforce contracts. Collaborate with product, research, design, and infra teams to define requirements, iterate rapidly, and ship productionâgrade code. Monitor performance, reliability, and security. Mentor junior engineers through code reviews, architecture reviews, and shared best practices. Requirements 5+ years of professional software engineering experience with endâtoâend ownership in a fullâstack role. Deep expertise in Python, Node.js, React/TypeScript, and PostgreSQL. Able to be handsâon with GCP, containerization (Docker/K8s), and building/supporting highâtraffic systems. Proven experience integrating AI/ML models (LLMs, NLP, RAG) into production apps. Familiarity or strong interest in working with MCP servers. Exceptional problemâsolving skills and a product mindset: you think deeply about UX, performance, and business impact. You sweat both technical details and end-user experience. Nice to Haves Experience with multiâstep or agentic AI workflows. Background in AI infrastructure or tooling companies. Contributions to openâsource AI/ML projects. What we offer Competitive salary and equity package (roles, responsibilities, and comp grow as we do) Top-tier health, vision, dental insurance (US) Regular team off-sites Regular hack weeks

Full Stack Engineer

Full Stack Engineer at Challenger Consumer Brands Talk directly to custome

We are looking for a Software Engineer to join our team. The ideal candidate will have experience in developing scalable web applications. Responsibilities include designing, coding, and testing software solutions. You will work closely with product managers and other engineers to deliver high-quality products. Requirements: - Bachelor's degree in Computer Science or related field - Proficiency in JavaScript, HTML, CSS - Experience with React or Angular - Strong problem-solving skills - Excellent communication skills.

Software Engineer

Location: Latin America (Brazil, Argentina, etc) Department: Engineering Employment: B2B Contract - Ltda is required to move forward Duration: 3 Months with the possibility to extend About YLD: Everything we do is to empower our clients to move forward. Our purpose is to help our clients develop the capabilities they need to outperform their competitors. Our success is a consequence of ensuring our clients are successful. Our company is built on extraordinary people; we aim to attract, inspire, develop and retain them. YLD is a software engineering and design consultancy; we create digital capabilities for our clients that last beyond our engagement. We have offices in London, Lisbon, and Porto. About the role: As a Senior Software Engineer, youâ'll be part of a client team building innovative products. We expect you to be curious, passionate, driven, and enthusiastic. Youâ'll be proficient at problem-solving, and crafting scalable, resilient, and fault-tolerant architectures. Youâ'll be an effective communicator and a team player. Furthermore, you and your team will move in a fast-paced engineering environment, achieving outstanding results and delivering exciting projects. About You: A YLD Software Engineering Consultant is a highly skilled developer who exemplifies the highest standard in software engineering and enjoys sharing their knowledge and experience with others. Youâ'll have the opportunity to build and deliver software within some interesting projects, both in terms of the product and the methodology. We work in an Agile environment (Scrum) with a test-first mindset (actually, writing code without tests should be unthinkable). We are also big advocates of pair programming and nothing is released until we have a code review. You have a real passion for problem-solving and are an active learner who gets excited by working collaboratively with those around you. If you are a proactive, adaptable, and enthusiastic engineer with must-have experience in Python and a passion for leveraging multiple technologies to build exceptional backend solutions, we encourage you to apply. Join our team and contribute to the development of innovative products that make a difference in the industry. Your day-to-day responsibilities will look like this: Crafting excellent products! As a Software Engineer, you will be building new features that meet the needs of our clients customers Working closely with your team, regularly collaborating and on engineering initiatives, to continually push yourselves to be better Being responsible for the production operation and monitoring of products inline with SLAs Driving good practices within your team, making an impact on the whole department Participating in regular show and tells, promoting your work to both your department and the wider company Youâ'll have the following skills and experience: Experience with modern frameworks across the stack (FastAPI, Gin, Express, etc.) Experience building modern data pipelines using dbt, Kafka, Spark, AWS Kinesis, AWS Lambda, and Apache Airflow (or similar); Experience working with data lakes; experience with Spark or Databrick; Comprehensive testing experience (unit, integration, e2e, security) and performance optimization Scalable system design patterns, load balancing, and high-availability architectures Database design and Data modelling (both relational and NoSQL) Understanding of common data transformation and storage formats, e.g. Apache Parquet API development (REST, GraphQL, gRPC) and event-driven architectures Caching strategies and message queue systems (Redis, Kafka, RabbitMQ) Cloud platforms (AWS, Azure, GCP) with containerisation (Docker, Kubernetes) CI/CD pipelines and Infrastructure as Code (Terraform, CloudFormation) Monitoring, observability, and performance optimisation tools You can keep a cool head when debugging production issues Non-Technical competencies: Problem-solving skills that balance innovation with pragmatic technology choices to solve business needs Comfortable working in a dynamic production environment and taking care of client expectations effectively Distinct customer focus and quality mindset Experience working closely with engineering leadership and architects to deliver high-quality solutions Experience in maintaining a high degree of ownership and transparency in deliverables An exemplar of YLDâ's brand and safeguarder of our reputation Exceptional communication skills, able to communicate complex ideas in a simple fashion What youâ'll get in return: The chance to work with a forward-thinking, ethical, and fun group of people and to develop and grow your skills in a fast-moving business Our typical Recruitment Process looks like this: 1st Interview with someone from the Talent team (30/45 mins) Technical Interview with our Senior Developers (1h30) Meet our Client Partner and Engineering Operations Manager (30 mins) We live and breathe our values, and know you will too: Growing every day Including everyone Relationships built on honesty and ethics Inspiring solutions Winning together Weâ're an equal-opportunity employer and value diversity in all its forms. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, pregnancy or maternity, age, marital status, or disability. We also offer a remote-first working environment, with flexible working and workâ-life balance as standard for all employees.

Contract Senior Software Engineer

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io â— the marketplace that connects you with hand-picked startups in the US and Europe. What we offer: The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers. No more hunting for clients or negotiating rates â— let us handle the business side of things so you can focus on what you do best. We'll manually find the best project for you according to your skills and preferences. Choose a schedule that works best for you. Itâ's possible to communicate async or minimally overlap within team working hours. We respect your seniority so you can expect no micromanagement or screen trackers. Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah? We will support you from the time you submit the application throughout all cooperation stages. Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do. Through our community, we will connect you with the best developers from more than 50 countries. We have a large number of Senior Full-Stack positions, and we currently have an urgent request for Senior React & Node Developers for a short (2â-3 month) project. Itâ's a massive opportunity, as they are one of the fastest-growing YC companies in their batch. Requirements for the Senior React & Python Position: 4+ years of software development experience. 3+ years of commercial experience with React.js and Python. Experience with AWS, GCP, or Azure is required. Experience with Next.js, Node.js, Django, TypeScript, or AI is a strong plus. Requirements for the Senior Node & React Position: 5+ years of software development experience. 5+ years of commercial experience with React.js and Node.js. Expertise in Next, TypeScript, and AWS, or in Next, Tailwind, and SQL, is a must. Other requirements: Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture. Clear and effective communication in English â— advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls. Strong self-organizational skills â— ability to work full-time remotely with no supervision. Reliability â— we want to trust you and expect that you wonâ't let us and the client down. Adaptability and Flexibility â— the ability to onboard the project promptly after accepting it and start delivering results quickly. Sounds good for you? Apply now and join the Lemon.io community! NOT YOUR TECH STACK? We have multiple projects available for Senior Developers. If you have 4+ years of commercial software development experience and are proficient in any of the following areas: Node & Python, Swift & SwiftUI, Unreal Engine, Data Engineering, WordPress, Svelte & TypeScript, Svelte & Node, Svelte & Python, Golang, Shopify & JavaScript, PHP & Vue, Rust, MLOps, React Native & Node, PHP & Angular, PHP & React, Blockchain, or Data Analysis â— weâ'd be happy to connect and match you with a suitable project. If your experience matches our requirements, be ready for the next steps: VideoAsk â— watch a short video about our startup, up to 10 minutes Complete your profile on our website 30-minute screening call Technical interview Feedback Magic Box (we are looking for the best project for you). We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire. P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S (if you are an owner of W-9 ben form), Canada, Asia (Japan, Singapore, South Korea, Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the the UK. However, we have some exceptions. At the moment, we donâ't have a legal basis to accept applicants from the following countries: European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia. Latin America: Cuba and Nicaragua Most Asian countries and Africa. We expand and shorten the list of exemptions regularly. Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.

Senior Full stack Developer

About Us: At CompassX, our clients rely on us to lead high-priority strategic initiatives and transformational projects. Our mission is to create a community of people who come up with innovative approaches and deliver the best outcomes for our clients. You will have the opportunity to leverage your experience, creativity, and skills to impact your clients and influence the trajectory of our firm to achieve growth for the team and your career. We are honored to be recognized as a â"Best Place to Workâ" in Southern California and listed as one of INC.â's 5000 fastest-growing private companies in the U.S. \n \n $65 - $80 an hour Note: This is a 9 month Contract role. Weâ're seeking a Senior Full-Stack Software Engineer to design, develop, and maintain scalable applications using React, Go, and TypeScript. You will also architect and deploy services on AWS and manage containerized applications using Kubernetes. This role combines technical leadership, hands-on coding, and close collaboration with cross-functional teams. Later, this role will be expanded to manage the team members and collaborate closely with the business in enabling the teams to achieve their business goals. Key Responsibilities: - Build and maintain scalable frontend applications using React and TypeScript - Design and implement backend services and APIs in Go - Optimize full-stack performance and ensure code quality through reviews and best practices - Translate product requirements into technical solutions with clean, well-documented code - Lead design discussions and contribute to architectural decisions - Collaborate closely with designers, product managers, and engineers to deliver end-to-end features - Deploy and monitor cloud-native applications on AWS using Kubernetes - Mentor and support junior developers on technical design and implementation - Participate in agile ceremonies, design reviews, and roadmap planning \n

Full Stack Software Engineer

Full Stack Software Engineer at CompassX

About the Role Shape the future of Web3 by building fast, high-quality frontend applications. As a key part of our team, youâ'll design and develop core features to create a smooth and responsive user experience. Youâ'll work closely with product, design, and blockchain teams to bring ideas to life from start to finish. Core Responsibilities Architect, develop, and maintain high-performance, responsive web applications using modern frontend technologies Collaborate closely with product, design, and blockchain teams to deliver exceptional user experiences Build pixel-perfect UI components from Figma mockups and design assets Debug and troubleshoot issues across the full web stack Qualifications Bachelorâ's in Computer Science or related field, or equivalent experience 3+ years in frontend development, with 1+ years in Web3/DeFi Expertise in JavaScript, TypeScript, React ecosystem Solid understanding of web performance optimization and best practices Experience with Web3.js, Ethers.js, and an understanding of Web3 principles (wallets, smart contracts) Soft Skills: Basic English verbal and written communication skills are required Strong collaboration abilities in a remote, cross-functional team Ownership mindset - â"you build it, you run itâ" Problem-solving skills with attention to detail Quick learner in a fast-paced environment \n \n

Frontend Engineer

We are looking for a Software Engineer to join our team. The ideal candidate will have experience in developing scalable web applications. Responsibilities include:- Designing and implementing new features- Collaborating with cross-functional teams- Troubleshooting and debugging applicationsQualifications:- Bachelor's degree in Computer Science or related field- Proficiency in JavaScript, HTML, CSS- Experience with React or AngularThis is a full-time position based in our San Francisco office.

What is Loancrate? We started Loancrate to make home-buying simpler and less expensive for lenders and borrowers (us!). Today, mortgage lenders are stuck running their companies on software products built 20 years ago. These products are slow, unstable and don't lead to material improvements in efficiency. When using these systems, the average human cost to originate a loan is still over $11,000. Loancrate builds AI native tooling to automate mortgage workflows. Our ultimate goal is fully automated origination, which has the potential to save lenders over $16B in operating expense per year. Since starting in 2020, our remote team has enabled our customers to power >$85 billion in new home loans. We are a group of people excited to tackle the complexity of the home-lending industry. We care about collaboration, very open communication covering the good & the bad so that we learn from our decisions quickly, and ultimately having fun while we're building. You'll fit in well if you like diving deep quickly! The Opportunity Our dreams are big and we have much to build! We're looking for senior software engineers to help lead our team in powering the future of home buying in the US (which could entail managing a majority of US home loans every year '— financial assets worth trillions of dollars). We are excited to offer competitive salary and equity for this role. What To Expect As an engineer at Loancrate, you'll continue our team tradition by shipping code to production on your first day! Following that, within your first month, you'll dive into your first mission-critical project, such as... Architecting, building, and launching complex, multi-step AI agents that our customers use to digitize their ops workflows and save millions of dollars per year. Integrating with 3rd-party providers of lending services APIs to generate documents/disclosures, produce automated underwriting results, or prevent fraud. Architecting, building, and launching the next generation of our job processing infrastructure on AWS to make Loancrate's back end more observable and reliable. Tech Stack Nearly all of our code is written in TypeScript. We use React on the frontend, Node/Express on the backend (running inside Docker), GraphQL/Apollo on both sides, and Postgres as our database. We use AWS (ECS, RDS, ElastiCache, Kafka, ElasticSearch, and more) and manage all of our infrastructure with Terraform. We believe that high engineering velocity drives high product velocity (and, in turn, our success as a company ). Keeping this in mind, we've invested heavily in creating a great developer experience that enables engineers to ship fast. Some highlights of our stack: ' End-to-End Type Safety - We generate TypeScript types from our Postgres and GraphQL schemas so that when we change our database schema we see type errors in any incompatible frontend React components. Full-Stack Code Sharing - Our build tooling supports seamless sharing of TypeScript files between the client, server, and other packages in our mono-repo so that we never have to define functions or configuration values twice. Reproducible Infrastructure - We've used Terraform to manage 100% of our infrastructure since day 1 and have configured our CI pipeline to automatically deploy temporary staging environments for every pull request. We use these per-PR environments to get feedback from teammates and test any infrastructure changes using infrastructure that's identical to production. First Class Testing Utilities - We have a comprehensive library of utilities that mock production-like data and feed automated end-to-end, integration, and performance tests. Our wide-ranging test suite allows us to move fast while maintaining nearly perfect uptime. Preferred Skills and Background (It's okay not to have all of these things - these are just some skills we are excited about!) Familiarity with modern AI product development lifecycles (evals, experiment design, dataset curation, etc). We don't just build AI chat bots. We wrangle non-deterministic LLMs into reliable mission-critical systems. A constant and keen eye for security risks '— we store and display some of people's most sensitive personal data and need to keep it safe! A desire to be product-oriented, from thinking through the product implications of what you're building to contributing your unique ideas of how to improve the product. Ability to develop readable, maintainable, and effective software architecture patterns that support use of our product by various enterprise customers (each with thousands of employees and their own methods for running their companies). ' Excitement to mentor less senior engineers in both hard and soft skills. SRE-oriented mindset for developing infrastructure that's reliable, observable, and requires minimal toil to maintain. Experience scaling high-throughput distributed systems in the cloud. Bonus points if you're experienced with infrastructure-as-code solutions like Terraform or CloudFormation! Ability to develop full-stack web app features from design through deployment. Experience designing and scaling complex relational DB schemas, as well as figuring out performant ways to store, retrieve, and update such data. Home loans have thousands of data fields .

Senior Software Engineer

Senior Software Engineer at What

About Mainstay Mainstay is the leading market intelligence platform purpose built for buying, managing, and selling homes in the single family rental industry. As an AI native company, we turn complex data into clarity that helps the industry move forward with confidence. Founded within Opendoor, Mainstay launched as an independent company in 2024 and recently raised a Series A round led by Khosla Ventures. Ready to shape the future of real estate with AI? Join Mainstay and help us redefine what's possible in the single family rental space. If you thrive on solving complex problems and want to make a tangible impact in a fast-growing industry, we'd love to hear from you - apply now and let's move the industry forward, together! About the role What you should expect as a full-stack software engineer: maximum agency, tight feedback loops with customers, and no shortage of product challenges that directly translate to business value! You'll have the opportunity to design, build, and ship complex systems and tools that enable teams to execute at scale. We're looking for someone who can build robust, reliable, and production-ready features end to end, from backend systems and retrieval pipelines to user-facing product experiences. Our products are built with Python, TypeScript, and React on AWS. What you'll do In this role, you'll shape solutions from the ground up - owning backend and frontend design, automating complex workflows, and directly applying user feedback. You'll help set technical direction for the team, mentor other engineers, and turn big ideas into products that create real impact for our customers and the business. In this role, you will: Contribute to all phases of product development, from ideation and prototyping to implementation and iteration. Build and evolve both frontend product experiences and backend services that power them. Design reliable and scalable backend services to support new features in production. Modernize and automate legacy workflows in the real estate industry. Define and ship useful features in partnership with cross-functional teams. Mentor and support the growth of other engineers on the team. Collaborate closely with product managers, designers, and operators to identify and solve customer pain points. What we're looking for 3+ years of experience building and delivering production-grade software, ideally in fast-paced, high-growth startup environments. Strong full-stack engineering skills, with a focus on backend scalability and system reliability. Experience designing, building, and evolving scalable systems and services. Clear, concise communicator - essential for our remote, highly collaborative team. Proactive and ownership-driven - comfortable navigating ambiguity and shifting priorities. Customer-focused mindset with a drive to build solutions that solve real problems. Strong Python background; experience with TypeScript and React is also a plus. Experience with workflow automation or complex data integration is a plus. #LI-AW Mainstay Built on Trust At Mainstay, trust is at the core of everything we do. We build trust with everyone -- from candidates to employees to partners. We believe in fairness and openness throughout our hiring process, evaluating candidates based on qualifications without regard to race, color, religion, national origin, age, gender, marital status, disability, veteran status, sexual orientation, gender identity, or any other protected status. Our privacy practices describe how we handle applicant information, you can find the policy details for California residents here. We are committed to providing reasonable accommodations throughout our recruitment processes for candidates with disabilities, pregnancy, religious beliefs, or other reasons protected by applicable laws. If you require assistance or a reasonable accommodation, please contact us at mainstay-recruiting@opendoor.com

Software Engineer at Mainstay

We're building safety-enhancing technology for aviation that will save lives. Automated aviation systems will enable a future where air transportation is safer, more convenient and fundamentally transformative to the way goods '— and eventually people '— move around the planet. We are a team of mission-driven engineers with experience across aerospace, robotics and self-driving cars working to make this future a reality. As a Senior Software Engineer - Engineering Productivity at Reliable Robotics, you will design, and implement software to support the development, analysis, and certification of automated aircraft systems. You will work closely with product owners and end users to develop solutions that enable and optimize engineering development workflows. The software you produce will be critical to the development and certification of the first fully autonomous aircraft. Responsibilities In your role as an internal tool developer, you will develop applications, infrastructure, and tools used by engineering to capture product requirements and interface definitions, model the product architecture and design, and reduce and analyze flight and lab test data. You will supercharge the engineering organization's efficiency and effectiveness by streamlining tools and processes. You will work with other teams and stakeholders to establish technical and UX design requirements for these projects and own the '"plan, code, build, test, release, deploy'" lifecycle of these applications and services. \n Basic Success Criteria Bachelor's degree in Computer Science, Computer Engineering, or equivalent experience 5+ years experience with professional full stack web development in a team setting Professional experience with core browser technologies (JavaScript, HTML, CSS) and TypeScript Experience structuring dynamic, model-driven data and determining data relationships Experience working with SQL, NoSQL, and time series databases Experience designing software architecture for both new and existing projects Preferred Success Criteria Experience using Python and libraries such as pandas, matplotlib, and django Experience integrating with cloud platforms and infrastructure tools such as AWS, Terraform, and Docker Experience designing and implementing ingestion pipelines for high-throughput streams of real-time telemetry Experience integrating business intelligence and data visualization tools such as Tableau, Power BI, Superset, Metabase Experience developing React components and reusable libraries/tools for developers \n At Reliable Robotics, we believe that our internal tools are key ingredients to our success. Aircraft design, integration, and certification are highly complex processes requiring diligent management of data and their relationships. Traditionally a paper process, our tools enable our system designers to move faster, conduct more thorough and comprehensive analyses, and design safer aircraft systems. Come be a part of taking our products to the next level. Must be willing to travel up to 10% of the time. The estimated salary range for this position is $175,000 to $235,000/annual salary + cash and stock option awards + benefits. At Reliable Robotics, we strive to provide competitive and rewarding compensation based on experience and expertise, as well as market conditions, location, and pay equity. In addition to base compensation, Reliable Robotics offers stock options, employee medical, 401k contribution, great co-workers and a casual work environment. This position requires access to information that is subject to U.S. export controls. An offer of employment will be contingent upon the applicant's capacity to perform in compliance with U.S. export control laws. All applicants are asked to provide documentation that legally establishes status as a U.S. person or non-U.S. person (and nationalities in the case of a non-U.S. person). Where the applicant is not a U.S. person, meaning not a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident, (iii) refugee under 8 U.S.C. 1157, or (iv) asylee under 8 U.S.C. 1158, or not otherwise permitted to access the export-controlled technology without U.S. government authorization, the Company reserves the right not to apply for an export license for such applicants whose access to export-controlled technology or software source code requires authorization and may decline to proceed with the application process and any offer of employment on that basis. At Reliable Robotics, our goal is to be a diverse and inclusive workforce. As an Equal Opportunity Employer, we do not discriminate on the basis of race, religion, color, creed, ancestry, sex, gender (including pregnancy, childbirth, breastfeeding, or related medical conditions), gender identity, gender expression, sexual orientation, age, non-disqualifying physical or mental disability or medical conditions, national origin, military or veteran status, genetic information, marital status, or any other basis covered by applicable law. All employment and promotion is decided on the basis of qualifications, merit, and business need. If you require reasonable accommodation in completing an application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please direct your inquiries to work@reliable.co

Software Engineer Engineering Productivity

Software Engineer Engineering Productivity at Reliable Robotics

About AirDNA We built AirDNA to solve a problem: how do you make smart short-term rental decisions when there's too much guesswork and not enough good data? What started in a garage in California in 2015 is now a global team helping thousands of people '— from aspiring hosts to major real estate firms '— make confident choices about where to invest, what to charge, and how to grow. Our mission is simple: give people the tools they need to build freedom through short-term rentals. Whether that means buying their first Airbnb or scaling a portfolio, we're here to help unlock financial independence and growth. We track 10M+ listings in 120,000 markets, and our platform is trusted by users in over 100 countries. It's big data, made useful. In 2023, AirDNA acquired Uplisting, a powerful property management software that helps hosts and operators manage listings across Airbnb, Vrbo, and other platforms. With features like channel management, automated messaging, dynamic pricing, task coordination, and financial reporting, Uplisting expands our mission to support every stage of the short-term rental journey '— from investment to operations. The AirDNA team We're a curious, driven, and kind group of humans who genuinely love what we do. Our values '— Happy, Hungry, Honest '— guide how we show up for our customers and for each other. Want to see what that looks like in action? You'll get a feel once you meet us. We welcome applicants from all backgrounds and encourage you to apply even if you don't check every box. Passion, potential, and perspective matter here. The Role AirDNA is looking for a Frontend Tech Lead to help shape the future of our product experience and technical direction. While this role is full-stack, you will be the technical driver for our frontend guild, pushing forward our React/TypeScript architecture, design systems, and developer experience. You'll partner with Product, Design, and Engineering leaders to deliver beautiful, performant, and scalable customer-facing applications. As a Tech Lead, you'll guide technical decisions across squads, mentor engineers, and help set the long-term direction of our frontend practice. \n Here's what you'll get to do: Lead frontend technical strategy: Define best practices, champion modern frontend architecture, and drive adoption of component libraries, state management patterns, and performance optimizations. Build customer-facing features: Work as a hands-on engineer in your squad, implementing features with React, TypeScript, Next.js, and associated libraries. Shape the frontend guild: Facilitate guild discussions, align engineers across squads, and promote knowledge-sharing and consistency in our frontend stack. Mentor and grow engineers: Coach junior and mid-level developers, review code, and help engineers build strong frontend skills. Collaborate cross-functionally: Partner with Product Managers, Designers, Data Scientists, and Backend Engineers to deliver features that delight customers. Contribute full-stack when needed: While you're frontend-leaning, you'll occasionally dive into backend services (Python, AWS, APIs, Kubernetes) to deliver end-to-end solutions. Drive engineering excellence: Influence tooling, CI/CD, testing, and monitoring strategies that improve developer velocity and reliability. Represent engineering: Serve as a technical leader in planning sessions, roadmap discussions, and cross-team initiatives. Here's what you'll need to be successful: Experienced: 8+ years of professional software engineering, with at least 5 years of recent experience in React and TypeScript. Frontend expert: You've scaled and optimized large-scale SPAs, understand rendering/performance tradeoffs, and care deeply about accessibility and design fidelity. Full-stack capable: You're comfortable contributing to backend systems (Python/Django/FastAPI, AWS, data pipelines) when the team needs it. Technical leader: You've led technical discussions, influenced architecture decisions, and aligned teams toward common engineering standards. Mentor: You enjoy leveling up others, giving thoughtful feedback, and guiding careers. Collaborator: You thrive in cross-functional environments and can translate business goals into technical strategy. Forward-thinking: You stay current on frontend trends, evaluate emerging tools, and bring pragmatic innovation to the team Here's what would be nice to have: Experience with design systems and component libraries (e.g., Storybook, Radix, Styled Components). Experience with React Query, Recoil, Redux, or other state/data management approaches. Experience with Google Maps API or other data visualization libraries (D3, Leaflet, Mapbox). Strong background in CI/CD pipelines (GitLab preferred) and containerization (Docker/Kubernetes). Familiarity with headless CMS platforms (Prismic, Contentful). Experience with data-intensive apps, large-scale visualizations, or personalization at scale. Here's what you can expect from us: Competitive cash compensation and benefits, the salary for this position is $130,000 - $175,000 per year. Colorado Salary Statement: The salary range displayed in specifically for those potential hired who will work or reside in the state of Colorado if selected for this role. Any offered salary is determined based on internal equity, internal salary ranges, market data/ranges, applicant's skills and prior relevant experience, certain degrees and certifications. Benefits include: Medical, dental, and vision packages to meet your needs Unlimited vacation policy; take time when you need it Quarterly team outings 401K with employer match up to 4% Continuing education stipend Lunch is provided Tuesday to Thursday for those in the Denver office Commuter/RTD benefit for Denver based employees 16 weeks of paid parental leave New MacBooks for employees Pet-friendly! \n AirDNA seeks to attract the best-qualified candidates who support the mission, vision and values of the company and those who respect and promote excellence through diversity. We are committed to providing equal employment opportunities (EEO) to all employees and applicants without regard to race, color, creed, religion, sex, age, national origin, citizenship, sexual orientation, gender identity and expression, physical or mental disability, marital, familial or parental status, genetic information, military status, veteran status or any other legally protected classification. The company complies with all applicable state and local laws governing nondiscrimination in employment and prohibits unlawful harassment based on any of the aforementioned protected classes at every location in which the company operates. This applies to all terms, conditions and privileges of employment including but not limited to: hiring, assessments, probation, placement, benefits, promotion, demotion, termination, layoff, recall, transfer, leave of absence, compensation, training and development, social and recreational programs, education assistance and retirement. We are committed to making our application process and workplace accessible for individuals with disabilities. Upon request, AirDNA will reasonably accommodate applicants so they can participate in the application process unless doing so would create an undue hardship to AirDNA or a threat to these individuals, others in the workplace or the company as a whole. To request accommodation, please email compliance@airdna.co. Please allow for 24 hours to process your request. By applying for the above position, you will confirm that you have reviewed and agreed to our Data Privacy Notice for Applicants.

Frontend Tech Lead

Frontend Tech Lead at AirDNA

About UsQuillBot was founded in 2017 with a mission to help students and professionals'—especially those learning English'—strengthen their writing. Today, we help over 56 million people around the world create great things. Whether you're writing, designing, coding, or collaborating, QuillBot is a place where anyone can create at the speed of thought. Our AI-powered tools help you think clearly, communicate effectively, and create beautifully'—across every platform, in any format, at any skill level. If you're passionate about using technology to make the path from inspiration to execution more accessible, intentional, and relevant, come join us.Role OverviewWe're looking for an enthusiastic and results-oriented SEO Specialist who thrives on turning strategy into real-world growth. In this key role, you'll be responsible for executing high-impact SEO initiatives for specific products. Your focus will be on securing top rankings for high-volume, commercially valuable keywords, driving increased organic traffic, and ultimately boosting revenue.Responsibilities- Strategic Initiative Execution: Proactively manage and execute a pipeline of high-impact SEO initiatives derived from the overall growth roadmap. Ensure timely, effective deployment and alignment with broader marketing objectives.- Advanced Technical SEO: Conduct comprehensive technical SEO audits (e.g., crawlability, indexability, site speed, schema). Partner with engineering and product teams to prioritize and implement technical fixes, focusing on Core Web Vitals, site architecture, JavaScript rendering (CSR/SSR), and log file analysis.- Keyword Strategy & Content Implementation: Oversee the tactical implementation of our keyword strategy across all web properties. Collaborate closely with content and product marketing teams to ensure all new and existing assets are optimized for target queries, user intent, and semantic relevance.- On-Page & Conversion Optimization: Systematically optimize all on-page elements (metadata, headers, content structure, and internal linking) to improve ranking potential. Analyze the organic user journey and collaborate with the CRO/UX team to design and implement SEO-driven A/B tests aimed at improving conversion rates from organic traffic.- Performance Analysis & Reporting: Continuously monitor and analyze SEO performance metrics, providing actionable insights and recommendations to stakeholders.

SEO Specialist

SEO Specialist at About UsQuillBot

At ARB Interactive, creativity, tech, and play collide. Founded in 2022, we've grown to nearly 200 team members and were named one of LinkedIn's '2025 Top 50 Startups in the United States'! We move fast, think big, and love bold ideas that push boundaries (and buttons). From new rewards to fresh game mechanics, every challenge is a chance to innovate and have fun doing it. Our culture is collaborative, curious, and full of laughter because great ideas grow best between coffee, code, and a few epic high-fives. Overview As a Fullstack Software Engineer, you'll architect, build, and maintain modern, scalable systems across the stack. This is a hands-on role focused on both the frontend (React/Next.js/TypeScript) and backend (Node.js, MySQL, AWS) to deliver features that empower our users and drive business growth. What You'll Do Design, develop, and maintain front-end features in React (Next.js) and TypeScript Architect reliable backend services and APIs using Node.js, TypeScript, and MySQL Lead initiatives across the stack, such as game lobbies, authentication, promotions, and payment integrations Collaborate with product, design, business stakeholders, and QA to deliver polished, scalable features Optimize for performance, accessibility, SEO, and responsiveness Champion best practices, mentor team members, and lead code reviews Support and enhance our AWS-based infrastructure Ensure high quality deliverables through testing, QA collaboration, and monitoring Requirements 5+ years of professional frontend engineering experience with React, TypeScript, and Next.js 2+ years of backend development experience with Node.js, TypeScript, and MySQL Experience in cloud environments (preferably AWS) and familiarity with serverless architecture Strong understanding of state management, design systems, and component architecture Familiarity with A/B testing, web analytics, and responsive design Strong communicator with a proactive, team-oriented approach Experience building or supporting high-traffic applications or gaming platforms is a plus Bachelor's degree in Computer Science or equivalent experience Nice-to-Haves Experience with Terraform and infrastructure-as-code Exposure to online gaming or payment processing systems Exposure to streaming or messaging technologies (e.g. event-driven systems) Diversity Commitment: We are focused on building a diverse and inclusive team. We welcome people of all backgrounds, experiences, abilities, and perspectives and are an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Important Security Notice: Our recruitment team will only contact candidates through official channels using @arbinteractive.com email addresses and via our recruiting platform, Ashby. If you find a position on a third party careers page (LinkedIn, Indeed, etc.), the job posting will redirect you to our careers page (https://jobs.ashbyhq.com/arb-interactive) to begin your application. We will never request payment, banking information, or personal identification details during the application process. If you're ever uncertain about the legitimacy of communication claiming to be from our company, please forward it to recruiting@arbinteractive.com for verification before responding or clicking any links.

Fullstack Software Engineer

Fullstack Software Engineer at ARB Interactive, creativity, tech, and play collide

Filevine is forging the future of legal work with cloud-based workflow tools. We have a reputation for intuitive, streamlined technology that helps professionals manage their organization and serve their clients better. We're also known for our team of extraordinary and passionate professionals who love working together to help organizations thrive. Our success has catapulted Filevine to the forefront of our field'—we are ranked as one of the most innovative and fastest-growing technology companies in the country by both Deloitte and Inc. Our Mission Filevine is building the seamless intersection between legal and business by creating a world- class platform to help professionals scale. Role Summary: We are seeking a talented and experienced Senior Javascript Full Stack Engineer to join our dynamic team. The ideal candidate will have a passion for creating high-quality, user-friendly web applications, and a deep understanding of the latest web technologies. \n Responsibilities Design, develop, and maintain high-quality web applications using JavaScript, Node.js, and React. Collaborate with cross-functional teams to define, design, and ship new features. Analyze and resolve technical and application problems. Adhere to high-quality development principles while delivering solutions on-time and on-budget. Debug production issues across services and multiple levels of the stack with an eye towards improving maintainability over the long term. Improve engineering standards, tooling, and processes. Qualifications Proficient in JavaScript, Node.js, React, and other relevant web design coding languages. Experience with API design and development. Strong knowledge of data structures, system design, and algorithms. Excellent problem-solving skills. Strong understanding of the web development cycle and programming techniques and tools. Strong communication skills and ability to work collaboratively within a team. Education B.S. in computer science, information systems, a related field; comparable certifications; or equivalent direct work experience \n Compensation Information: $140,000 - 180,000 The base salary range represents the low and high end of the salary range for this position. The total compensation package for this position will be determined by each individual's location, qualifications, education, work experience, skills and performance. We believe in the importance of pay equity - the range listed is just one component of Filevine's total compensation package for employees. This position is also eligible for a paid time off policy, as well as a comprehensive benefits package. Cool Company Benefits: - A dynamic, rapidly growing company, focused on helping organizations thrive - Medical, Dental, & Vision Insurance (for full-time employees) - Competitive & Fair Pay - Maternity & paternity leave (for full-time employees) - Short & long-term disability - Opportunity to learn from a dedicated leadership team - Centrally located open office building in Sugar House (onsite employees) - Top-of-the-line company swag Privacy Policy Notice Filevine will handle your personal information according to what's outlined in our Privacy Policy.

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