Top Full-Stack Engineer Jobs in Seattle, WA

Design, build, and maintain scalable backend services and APIs for commerce workflows using Python/Django. Improve reliability, performance, and observability, operate AWS deployments, work with PostgreSQL and event-driven architectures (SNS/SQS), modernize legacy systems, and support CI/CD, testing, and production troubleshooting.

Lead full‑stack design and delivery of customer-facing web experiences (Browse, Navigate, Preview). Own architecture, APIs, data models, rollouts, observability, on‑call readiness, and cross-team alignment, using approved AI-assisted workflows while ensuring technical quality and reliability.

Build reusable, scalable front-end and full-stack features (React Native, TypeScript, Go/Java/Kotlin, AWS). Rapidly prototype, collaborate with product/design/analytics, contribute to architecture, code reviews, mentoring, and deliver highly reliable, customer-centric remittance experiences.

Design, build, and operate full‑stack identity web and mobile experiences (login, signup, account management). Own end‑to‑end delivery, including API and GraphQL schema design, component-driven UIs, testing, monitoring, reliability, and production debugging while collaborating with product, design, and platform teams.

Build and ship full-stack features for customer-facing Console and Playground, plus internal tools. Design and maintain APIs and backend services, implement accessible performant frontends, translate product requirements into incremental work, and improve code quality through reviews and design discussions.

Lead technical direction and delivery for the Acquisition & Onboarding full‑stack team. Build and maintain mobile (React Native/native) and web experiences, backend services at scale, and operational tooling. Drive architecture, mentor engineers, ensure reliability/monitoring/on‑call readiness, collaborate with product and design, and improve dev processes, testing, and release practices to impact conversion and retention.

Senior full-stack engineer responsible for end-to-end web experiences: making architectural decisions, building UIs and APIs, maintaining web development best practices, collaborating across SDLC, and ensuring Microsoft-quality deliverables using Azure data services.

Develop and deliver production-ready web experiences for marketing using React, Gatsby, and Tailwind. Build API integrations, maintain a lightweight codebase and design-system components, ensure accessibility, performance, SEO, and multi-region support, participate in code reviews, and help shape tooling and best practices across the team.

Owner of end-to-end ecommerce features: design, implement, and maintain scalable backend services and performant React/Next.js frontends. Integrate payment gateways and procurement systems (PunchOut), mentor engineers, uphold code quality, and improve platform stability across Node.js, MySQL, and MongoDB.

Design and implement full‑stack, low‑latency web-based Ground Control Station and C2 systems (map-centric UIs, real-time telemetry, video streaming), lead architecture and APIs, mentor engineers, support field tests and mission deployments, and ensure interoperability with C2 standards.

Build and scale consumer-facing mobile and web applications and backend services. Own features end-to-end across frontend and backend, optimize databases and queries, integrate third-party APIs, implement algorithms for risk and transaction evaluation, improve reliability and CI/CD, and contribute to testing, monitoring, and internal tools to support customer operations.

Senior fullstack engineer to build and scale Brigit's consumer finance platform. Own end-to-end features across frontend (React/React Native/TypeScript) and backend (Java/REST/SQL), optimize database and APIs for high scale, integrate 3rd-party services, implement risk and transaction algorithms, improve CI/CD, testing, monitoring, and internal tooling to support millions of users.

Backend-leaning full-stack engineer to build, maintain, and scale CueBox's Golang/Protobuf/Postgres backend and React/Next.js frontend. Pioneer new product areas, improve performance and payments, contribute to architecture and engineering culture, and support Python data pipelines on GCP.

Build responsive web applications and scalable frontend/backend services, design secure APIs and databases, implement AI-powered search and asset management features, collaborate on system architecture, and optimize performance and UX for a cloud-native DAM platform.

Design and build the Command & Control frontend and full-stack features for large heterogeneous UAV swarms. Develop distributed, real-time infrastructure tolerant of intermittent communications, implement UI concepts for telemetry, sensors, scheduling and data links, own features end-to-end, and maintain strong CI/CD, QA, and DevSecOps practices.

Build end-to-end features across frontend and backend using React/TypeScript and Node.js (some legacy Go). Collaborate with design, ship via continuous deployment, debug and monitor production, use AI coding tools, and make product and technical decisions while owning delivered features.

Build and maintain end-to-end product features across frontend, backend, and databases. Design APIs, authentication, data models, integrations, and AI-assisted workflows. Ship production-ready SaaS components, debug across the stack, improve reliability and performance, and collaborate on product and architecture decisions in an early-stage startup.

The Staff Engineer will lead technical direction for Stripe's Identity team, focusing on architecture, API design, and fraud detection systems, ensuring scalable and reliable identity verification solutions.

Support and debug .NET applications (2–4 years experience). Analyze application logs and perform troubleshooting in a clean room/customer R&D lab. Candidate will attend a client interview as part of external hiring.

The Full Stack Engineer will design, develop, and deploy applications, build RESTful APIs, optimize for performance, and mentor junior engineers while working in Agile teams.

Teravision Technologies seeks a Backend Developer with 3+ years of NodeJS experience, primarily working with Express and MongoDB, preferably knowledgeable in Typescript and CI/CD tools.

Work on real-world web applications across frontend and backend. Use modern frontend frameworks (React/Angular/Vue) and backend tech (Node.js, Python, Java, PHP). Integrate RESTful APIs with databases (MongoDB, PostgreSQL, MySQL), debug, test, optimize performance, and collaborate with designers and product teams while gaining hands-on mentorship.

Design, implement, and maintain performant, testable full-stack applications. Collaborate with designers and product managers to gather requirements, estimate work, produce documentation, and deliver scalable frontend and backend systems. Provide status reporting, follow Agile practices, and take ownership from technical design through launch.

Build and maintain Django-based web applications, design RESTful APIs, implement frontend features (HTML/CSS/JS), optimize performance and security, collaborate with cross-functional teams throughout the development lifecycle.

The Full-Stack Developer will design, develop, and maintain applications, focusing on backend APIs and user interfaces, while optimizing for performance and reliability.