Top Remote Full-Stack Engineer Jobs in Seattle, WA

Founding-team senior engineer to architect and build core platform components. Work with CEO/CTO to develop scalable distributed backend systems and frontend using React, Node.js and TypeScript. Implement solid coding practices, testing, CI/CD, and agile workflows while iterating rapidly in an early-stage fintech startup.

Work across frontend and backend to design, build, and ship annotation and review features; implement ingestion, storage, user management, and annotation pipelines; integrate model inference into workflows; optimize performance for large images/videos; design APIs and collaborate with product, operations, and annotators.

Build and maintain backend services in Python, design REST/GraphQL APIs, integrate LLM/AI workflows, and implement responsive React UIs from designs. Own end-to-end features, ensure observability, security, CI/CD, and collaborate with product and UX teams to deliver production-grade, cloud-native solutions.

The Full Stack Engineer will architect, implement, and maintain user-facing applications, improve UX, and design internal tools while collaborating with a team in a startup environment.

Design, build, and maintain backend services and REST APIs with NestJS/TypeScript and MySQL; implement React/Tailwind UI components; integrate frontend and backend; support Kafka messaging; collaborate with product/design using Figma; use AI coding tools to accelerate development and work in an agile cross-functional team.

As a Staff Full Stack Engineer at Assured, you will enhance the B2B SaaS platform by building and shipping features across the stack, leveraging AI tools, collaborating with teams, mentoring engineers, and driving architectural decisions to improve systems and product development.

Full Stack Engineer responsible for building responsive frontends (JS/TS, React preferred) and backend services (Python, Go, or Node.js/TypeScript), designing RESTful APIs, managing databases (Postgres/MongoDB), and deploying on cloud (AWS). Collaborate with teams, optimize performance, and apply DevOps practices (Docker, Kubernetes, CI/CD). Requires strong problem-solving, communication, and 3+ years of experience.

Design and build scalable applications across frontend and backend. Collaborate with teams to deliver user-friendly products and optimize system performance.

Responsibilities are not specified in the posting. The role is listed as a Full Stack Engineer and is remote; no technical or duty details provided.

Implement and maintain full-stack features for a career-intelligence platform: architect NestJS/Next.js applications, manage PostgreSQL schemas and queries, build responsive UIs with Tailwind, integrate LangChain-powered AI, implement authentication with Clerk, and create end-to-end tests and automation with Puppeteer to ensure launch readiness and performance.

Develop and enhance product features, specifically focusing on third-party integrations and application management while ensuring scalability and improving customer experiences.

Build and own Eve's marketing site and GTM engineering stack: integrate and optimize external tools, design AI agents for sales and marketing, implement webhooks and middleware to sync product/CRM data, and create programmatic campaigns and internal tools in partnership with Marketing, Sales, RevOps, and Product to drive growth and automation.

As a Senior Full Stack Developer at Capnexus, you'll design and develop a cloud-native subcontractor pre-qualification platform, integrating AI and AWS services, while collaborating with cross-functional teams on deployment and testing.

As a Staff Full Stack Engineer, you will lead complex projects for the lending platform, mentor engineers, and drive system optimization while collaborating with cross-functional teams.

Build and maintain scalable backend services and APIs for AI functionalities, collaborating on product development and optimizing system performance.

The Staff Frontend Engineer will design and implement complex frontend systems, lead engineering efforts, and collaborate with cross-functional teams to deliver a sophisticated SaaS platform.

As a Senior Software Engineer, you'll implement collaboration features, support team architecture, work across tech stacks, and improve developer experience.

The Staff Software Engineer will lead full-stack initiatives, improve system quality, drive technical direction, and mentor peers in a collaborative environment.

As a Senior Software Engineer, you'll design, develop, and maintain full-stack applications, utilizing TypeScript and modern frameworks while collaborating cross-functionally to enhance user experience and performance.

Seeking a full stack engineer to develop applications, requiring skills in Node.js, SQL, and modern JavaScript frameworks with a focus on scalability and performance.

As a Full Stack Engineer, you'll develop and maintain features, expand product lines, and explore AI applications in security infrastructure.

As a Staff Full Stack Engineer, you will develop and maintain web applications, collaborate with teams, ensure scalability, and provide technical leadership. You will work with APIs and user interfaces to enhance patient data accessibility in healthcare.

Build and maintain scalable data pipelines, Snowflake schemas, and RESTful APIs; develop Node.js applications on AWS; create front-end interfaces with Vue/Vuetify; ensure data quality, reliability, and production readiness for data-driven products.

As a Founding Fullstack Engineer at MathGPT, you will build and ship modern web applications using React and Typescript, focusing on creating user-friendly and efficient products.

Design and build API-first, distributed full-stack applications integrating LLMs, RAG, and multi-agent workflows. Implement microservices, real-time features, observability, CI/CD, and cloud-native deployments while mentoring engineers and ensuring scalable, production-grade systems.