Top Full-Stack Engineer Jobs in Seattle, WA

Design, implement, and maintain scalable serverless backend services and responsive Next.js front-end components. Build data scrapers and integrations, improve CI/CD and IaC, mentor junior engineers, and collaborate with product and clients to solve complex compliance problems.

Lead design and delivery of full-stack basketball scoring, statistics, and postgame features. Build scalable backend services and APIs with TypeScript and Node.js, develop React web experiences, support iOS and Android products, and make architectural decisions. Collaborate across product, design, and engineering teams, ensure code quality and system reliability, mentor peers, and contribute to technical standards and tools.

Develop and maintain full-stack web applications, including responsive front ends, server-side logic, RESTful APIs, microservices, and SQL/NoSQL databases. Collaborate with product managers and designers, participate across the software development lifecycle, troubleshoot application issues, optimize performance and security, and ensure cross-platform responsiveness. The role requires strong coding, debugging, communication, and problem-solving skills in a remote-first agile environment.

Build and deploy production full-stack web features using AI coding agents such as Claude Code, Codex, or Cursor. Own front-end, back-end, APIs, databases, cloud services, testing, security, debugging, documentation, and deployment. Collaborate directly with leadership, mentor volunteers, and rapidly deliver reliable software for a global nonprofit platform.

Designs and develops scalable full-stack eCommerce platforms using Java, Spring Boot, React, and TypeScript. Leads microservices and micro-frontend architecture, cloud-hosted platforms, distributed data and messaging solutions, streaming and batch pipelines, payment integrations, performance optimization, accessibility, and PCI-DSS compliance. Provides technical leadership, mentoring, architecture guidance, code reviews, documentation, and cross-functional collaboration.

Build and maintain scalable, high-performance full-stack applications using React and modern web technologies. Integrate backend services, RESTful APIs, and databases while collaborating with designers, product managers, and backend engineers. Participate in code reviews, technical discussions, debugging, and product ideation, with a focus on maintainable, efficient code and user-centered solutions.

Lead the architecture and delivery of GitLab’s data products, including near-real-time data ingestion, knowledge graph integrations, data marketplaces, observability, and data-sharing APIs. Translate ambiguous 0-to-1 initiatives into roadmaps, resolve cross-team dependencies, ensure operational readiness across deployment surfaces, and mentor engineers. The role requires deep full-stack expertise, technical leadership, and experience with AI-powered orchestration and multi-tenant SaaS systems.

Design and build scalable, cloud-native services for Salesforce’s AI Trust and Governance organization. Provide technical leadership across architecture, distributed systems, systems programming, and platform innovation. Lead features end to end, solve scalability challenges, develop comprehensive tests, debug defects, support releases, and mentor engineers through design and code reviews. Collaborate cross-functionally with engineering, product, architecture, and platform teams.

Develop and support software, automation tools, dashboards, and alarms for cloud infrastructure, cost attribution, and cloud efficiency. Collaborate with cross-functional teams and senior engineers to design reliable systems, APIs, databases, tests, and AI agents. Contribute to architecture and automation strategies while maintaining strong security, communication, and delivery practices.

Develop and deliver production-grade full-stack software across .NET/C# backend services and React front-end applications. Build reliable, scalable AWS cloud solutions, optimize relational and document databases, implement CQRS, and integrate AI-assisted coding workflows. Validate AI-generated code for security, quality, and maintainability while establishing guardrails and review processes. Collaborate with Product and QA, participate in code reviews, uphold engineering standards, and mentor other engineers.

Build and deploy full-stack enterprise product solutions for ElevenCreative customers. Work directly with enterprise clients to understand requirements, present solutions, and decide between bespoke integrations and broadly useful product improvements. Develop integrations, APIs, authentication, SSO, access controls, and other enterprise functionality while shipping independently with minimal direction. Experience with localization, TMS integrations, marketing tools, or adtech is advantageous.

Develop and maintain full-stack healthcare applications using C#, .NET, ASP.NET Core, JavaScript, and SQL Server. Design APIs, services, background jobs, database procedures, and responsive interfaces; troubleshoot across application and deployment layers; write automated tests; modernize legacy systems; build secure healthcare integrations; and protect sensitive data. Collaborate with product, QA, support, and implementation teams while participating in design reviews, code reviews, testing, and release validation.

Principal Engineer responsible for architecting, building, testing, deploying, and operating full-stack TypeScript applications. The role leads React and Next.js front ends, Node.js services, APIs, cloud infrastructure, integrations, databases, CI/CD, observability, security, and AI capabilities. It owns products end to end, establishes engineering standards, partners with creative and operations teams, and provides technical leadership on client projects. Strong autonomy, communication, architecture, and production operations skills are required.

Design and develop scalable cloud applications using Node.js, microservices, Azure, and AWS. Build workflow, data integration, REST API, serverless, and event-driven solutions; integrate client applications with cloud storage; implement security, testing, CI/CD, and DevSecOps practices. Optimize performance and cost, collaborate with cross-functional teams, provide technical leadership and mentorship, conduct technology research, and communicate architecture and recommendations to stakeholders.

Own end-to-end development of customer-facing web platform features, emphasizing React and TypeScript frontend development while contributing to Python backend services. Translate product concepts and designs into reusable, intuitive UI components, partner with Product and Design, engage directly with users, and use AI-powered tools to accelerate development while maintaining code quality and performance.

Build enterprise workforce management software for forecasting, capacity planning, scheduling, adherence, intraday management, and reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, integrations, and PostgreSQL data models. Support cloud-native deployments, CI/CD, testing, performance optimization, production troubleshooting, and technical design. Collaborate with product, operations research, QA, DevOps, UX, and client stakeholders.

Build and maintain scalable full-stack applications using Python, FastAPI, PostgreSQL, MongoDB, React, and TypeScript. Develop secure REST APIs, responsive interfaces, asynchronous services, and GenAI-powered features such as LLMs, AI agents, RAG, knowledge bases, and semantic search. Containerize and deploy applications with Docker and AWS while owning features through development, deployment, and monitoring.

Develop and deliver a new product within an existing Web3 and AI platform. Responsibilities include full-stack Craft CMS development with Twig, front-end JavaScript and UI implementation, Node.js development, smart contract and Web3 integration, and decentralized storage solutions. The role requires independent execution from design and briefs through completion in a remote environment. This begins as a temporary contract with potential for long-term employment.

Designs, builds, and ships scalable full-stack applications and services. Responsibilities include developing Java and Spring Boot APIs and microservices, building React interfaces, managing NoSQL data, contributing to architecture, using AI coding assistants, reviewing code, mentoring engineers, and partnering with product, design, QA, and DevOps teams.

Design, build, and ship scalable full-stack applications and services. Develop Java and Spring Boot APIs and microservices, build React interfaces, manage NoSQL data, and contribute to architecture decisions. Use AI coding assistants responsibly, participate in code reviews, mentor junior engineers, and uphold testing and documentation standards. Collaborate with product, design, QA, and DevOps teams to deliver reliable releases.

Build and scale Airbnb’s AirChatUI AI prototyping harness and native macOS/iOS applications. Lead architecture and implementation across web prototyping, iOS deployment, AI agent integrations, AirChat tooling, and Kyber platform integration. Develop declarative UI features, collaborate with infrastructure, product, security, and design teams, and establish scalable iOS patterns. Enable designers and product managers to create production-oriented prototypes while maintaining quality, accessibility, performance, availability, and release standards.

Develop and maintain enterprise and SaaS applications across frontend and backend layers. Build React interfaces, Java Spring Boot services, REST APIs, databases, authentication controls, and automated tests. Troubleshoot performance and security issues, participate in code reviews, and collaborate with technical and business stakeholders. The remote role includes approximately 5% travel and requires Public Trust eligibility and U.S. citizenship.

Build and review full-stack software environments for AI training. Develop frontend and backend features, integrate APIs, debug issues across UI and data layers, improve code quality, document technical reasoning, and review peer submissions. The role requires frontend and backend development experience with frameworks such as React or Angular and stacks including Node.js, Python, Java, or Go. Prior AI experience is not required.

Build and scale Euler’s AI-native PRM platform across the front end and back end. Develop React and Next.js applications, Python and Node.js services, CRM and partner-tool integrations, AWS and Cloudflare microservices, REST APIs, and deployment workflows. Collaborate with engineering and AI teams, apply secure coding practices, maintain CI/CD pipelines, and ship scalable features while working US East Coast hours.

Develop scalable full-stack applications and services for millions of users, with a backend focus. Design APIs, event-driven systems, and database solutions; collaborate with product, UX, and engineering teams; promote automated testing, reliability, code quality, and incident management. Participate in on-call responsibilities, pair programming, technical mentoring, and evaluation of new technologies.