Top Full-Stack Engineer Jobs in Seattle, WA

Build and maintain scalable full-stack web applications for Snap’s user-facing products. Develop interfaces and services, optimize performance, contribute to shared libraries, analyze operational and engagement metrics, and use AI-assisted workflows while maintaining code quality, security, scalability, and production readiness.

Build and ship custom full-stack programs for AI labs and product teams, including capture flows, task logic, data pipelines, validation, redaction, provenance, and delivery across web, mobile, and backend systems. Partner directly with technical customers to scope ambiguous requirements, determine what to reuse or build, ship production code, establish data quality processes, and turn repeatable custom solutions into core platform capabilities.

Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.

Develop scalable, resilient full-stack software for Redfin’s high-traffic rental search experiences. Build consumer-facing ReactJS interfaces, Java services, data ingestion pipelines, and supporting infrastructure on AWS. Apply AI to improve development efficiency, balance infrastructure and business trade-offs, collaborate with product and engineering stakeholders, lead features, and participate in on-call support for production reliability.

Develop and operate CrowdStrike’s internal cloud management platform and mission-critical CI/CD pipelines. Build APIs and UIs using Go and TypeScript, improve developer productivity, integrate tooling, maintain cloud-native infrastructure, and support secure, highly available software delivery systems. Collaborate with development, infrastructure, security, and SRE teams, ensure SOC2-aware processes, and participate in on-call operations.

Develop and ship phased software projects for Affirm’s mobile card acquisition team. Collaborate with product, design, and analytics stakeholders; build web and mobile applications and scalable APIs; monitor operational metrics; support availability and on-call efforts; participate in code reviews, interviews, and team development.

Develop and launch scalable full-stack search systems using JavaScript, TypeScript, Python, or Kotlin. Collaborate with engineers and stakeholders, balance delivery speed with system reliability, debug code, participate in code reviews, write tested and extensible software, and contribute to team growth and communication.

The Senior Full-Stack Engineer will manage client relationships, design integration solutions, and ensure seamless delivery and optimization of technical workflows, while leveraging AI for efficiency.

Lead the architecture and delivery of high-scale web products across frontend and backend services, mentoring engineers, and improving code quality. Collaborate to enhance AI infrastructure for efficient research management.

Build and operate reliable full-stack features for NVIDIA’s AI Hub, spanning frontend, backend, and data layers. Own features from design through production support, improve system reliability and observability, collaborate with product and AI research stakeholders, participate in reviews and on-call rotations, and apply modern cloud infrastructure, deployment, testing, and monitoring practices.

Build and maintain scalable full-stack web applications and systems for Snap products. Develop user interfaces, optimize performance and browser rendering, contribute to shared libraries, analyze operational metrics, and deliver secure, production-ready code. The role requires strong front-end and back-end development skills, testing knowledge, distributed systems experience, and the ability to use AI tools responsibly in engineering workflows.

Build and maintain scalable customer-facing ecommerce applications using C#, React, and SQL Server. Design features, optimize performance and reliability, participate in architecture and technical standards, review code, mentor engineers, troubleshoot production issues, and participate in on-call rotations.

Build and support full-stack applications for federal and national-security partners. Develop responsive interfaces, backend services, APIs, agent workflows, integrations, authentication, audit capabilities, and deployment configurations. Own features from requirements through production support, including testing, troubleshooting, documentation, releases, and partner handoffs. Collaborate with product, platform, DevOps/SRE, TPM, GRC, and partner engineering teams while mentoring engineers and creating reusable solutions.

Build and support full-stack applications, APIs, integrations, and AI agent workflows for federal and national security partners. Develop accessible interfaces, backend services, authentication, audit logging, data models, testing, and deployment capabilities across cloud, private-network, and on-premises environments. Diagnose production issues, support releases, document solutions, collaborate with partner and platform teams, and mentor engineers. The role also requires adapting applications to federal security and delivery requirements.

Lead full-stack software development across design, implementation, deployment, and monitoring. Build scalable Python and AWS serverless backend services, event-sourced systems, and event-driven pipelines. Develop Vue.js and TypeScript applications, implement security and infrastructure-as-code practices, conduct code reviews, mentor engineers, and drive technical excellence. Apply AI-assisted development tools thoughtfully while addressing quality, security, ethical, and intellectual-property risks.

Design, build, and maintain large-scale APIs, services, and systems using Ruby, React, TypeScript, Java, and Golang. Develop billing features, analyze performance, implement testing, debug production issues, and translate business needs into technical designs. Improve engineering standards and tooling, participate in on-call rotations, document integrations, and mentor new hires.

Build and operate scalable Ruby on Rails APIs and React interfaces for data activation. Responsibilities include API design, performance and reliability improvements, automated testing, production troubleshooting, documentation, architecture discussions, incident response, and cross-functional collaboration. The role requires secure, maintainable software development and responsible use of AI-assisted tools, with opportunities to establish API standards and mentor engineers.

Build and launch scalable fullstack web applications and APIs for Affirm’s Ads Platform. Collaborate with product, design, analytics, and engineering partners to break projects into deliverable phases, make technical trade-offs, write tested and extensible code, monitor service metrics, support on-call operations, review code, and participate in team development and interviews.

Build and ship full-stack web and mobile experiences across Affirm’s consumer products. Break down projects, collaborate with product, design, and analytics teams, develop scalable APIs, write well-tested code, monitor service health, participate in on-call support, review code, and contribute to engineering growth and interviewing.

Design and implement Azure cloud architectures and applied AI solutions for data science and experimentation projects. Provide technical architecture leadership, develop and deploy software, conduct security reviews and threat modeling, resolve service issues, guide users, document solutions, and present capabilities to technical and executive audiences. Build proofs of concept and MVPs that progress to production deployments while collaborating with data scientists, engineers, researchers, and external partners.

Build and architect a next-generation radar software platform, including asynchronous Rust backend services, APIs, real-time data models, React integrations, resilient offline-capable systems, observability, CI/CD, testing, and security hardening. Collaborate with product, UX, and engineering teams, mentor peers, lead design reviews, and advance algorithms and domain logic into high-performance production services for defense and automotive applications.

Design, build, and optimize scalable backend, full-stack, distributed systems, data platforms, and high-volume pipelines. Lead architecture, performance and cost optimization, reliability, incident investigations, secure coding, deployment automation, cross-team integration, and technical mentoring across Microsoft Clarity and Shopping products.

Build and operate a new full-stack payment and expense management platform from architecture through production. Develop backend services, APIs, data models, web and mobile capabilities, and partner integrations. Establish secure engineering, testing, observability, and production-readiness practices. Collaborate with product, design, security, and distributed engineering teams; review code, resolve complex issues, manage technical risks, mentor engineers, and own technical outcomes through continuous improvement.

Build and operate production-grade software, distributed systems, and infrastructure across public cloud, on-premises, and hybrid environments. Shape platform architecture, prototype emerging technologies, support early customers, and establish engineering standards in a 0-to-1 AI startup. The role requires strong Rust or C++ skills, cloud-native expertise, systems fundamentals, and ownership from concept through launch.

Develop and maintain Windows platform capabilities connecting PCs with printers, cameras, Bluetooth accessories, and mobile connectivity devices. Design, implement, test, debug, and release secure, reliable software, including security fixes and reliability improvements. Conduct code reviews, root-cause analysis, and telemetry-driven diagnostics while collaborating across engineering teams. Apply AI-powered development tools and contribute to technical direction, maintainability, and long-term platform health.