Top Software Engineer Jobs in Seattle, WA

Build and ship conversational, AI-assisted Android features and high-performance UI within the Redfin app. Drive architecture for conversational interfaces, collaborate on code quality, documentation, testing, and work with product and design to deliver maintainable, user-centered experiences. May participate in on‑call rotation.

Design, build, and optimize full-stack mobile and desktop web applications. Implement user interfaces, contribute to shared libraries, log and analyze metrics, use AI tools to accelerate development, and maintain high standards for code correctness, security, testing, performance, and scalability.

Design, implement, and operate critical, highly scalable backend services (identity, friend graph, persistence). Collaborate across teams, ensure availability, scalability, operational excellence, and cost management. Build, test, debug, and participate in incident resolution while leveraging AI tools to accelerate development and maintain secure, production-ready code.

Design and implement scalable backend systems for search and conversational AI. Build and productionize services leveraging LLMs, embeddings, and vector search. Lead architecture, mentor engineers, drive cross-team initiatives, and improve developer productivity and operational excellence.

Design, implement, and operate scalable ads delivery backend services. Own serving-time systems, collaborate with Product/ML/Infra, ensure availability and efficiency, use observability and automation, and apply AI-assisted workflows to ship production-quality code and optimize platform architecture.

Build end-to-end fullstack features for a mental healthcare platform: design APIs and UIs, manage clinical and practice-management systems, integrate AI capabilities, and own product outcomes from schema to frontend.

Lead design and implementation of the payment and clearinghouse platforms powering Headway's revenue flows. Build fault-tolerant, observable integrations (Stripe, Plaid, payers), create abstractions for adjacent teams, mentor engineers, and write high-impact code to ensure reliability, throughput, and correct reconciliation of transactions at scale.

Design and build reliable backend services powering clinical data, insurance billing, patient-facing infrastructure, and financial ledger systems. Scale high-integrity systems requiring idempotency, strong consistency, and pragmatic AI integration to automate provider workflows and enable personalized patient experiences.

Headway seeks a Staff Fullstack Engineer to own end-to-end product work across frontend and backend. You’ll build practice management, patient/provider engagement, AI-enabled clinical systems, onboarding, growth tools, and platform foundations. The role requires technical leadership, cross-functional strategy, mentoring, and shipping scalable, reliable systems in a complex healthcare domain.

Design, implement, and operate large-scale backend services (identity, friend graph, persistence). Collaborate across teams to evaluate trade-offs, ensure availability, scalability, and security, participate in incidents, and use AI tools to accelerate development while maintaining code quality and operational excellence.

Design, develop, test, and maintain resilient, high-performance checkout services. Contribute to API and data modeling, ensure operational reliability (monitoring, alerting, CI/CD), troubleshoot production incidents, collaborate with product and design, and integrate AI/ML-driven solutions to improve outcomes.

As a Knowledge Development Engineer, you'll architect and deploy AI-driven production systems, reverse-engineer existing systems, and guide product development. You'll synthesize customer feedback and lead experiments to connect technical development with business outcomes.

The Knowledge Development Engineer leverages AI agents to solve customer problems by building applications and automating workflows, focusing on delivery speed and quality.

Build and own control plane components for Voyage AI within MongoDB Atlas: APIs, Terraform providers, observability, governance, billing pipelines, and multi-tenant integrations. Collaborate with platform, inference, and ML teams to deliver secure, cloud-native, developer-first experiences and migrate legacy Voyage features to Atlas.

Design, implement, and operate critical, highly scalable backend services (identity, friend graph, persistence). Collaborate across teams, build and test distributed systems, ensure availability and operational excellence, use AI tools to accelerate development, and participate in incident response and debugging.

As an AI Native Software Engineer, you'll build products using AI coding agents, translating customer needs into solutions, and ensuring quality delivery and documentation.

As a Forward Deployed Engineer at Remitly, you will leverage AI agents to build applications, translate customer needs, and evaluate outputs for quality and security, focusing on delivery speed and robustness.

As an Agentic Software Engineer, you'll build and deploy production-grade AI systems, reverse-engineer existing software, guide teams, and facilitate customer discovery.

Design and implement complex Android platform projects, drive long-term Android strategy, build core frameworks and tooling, collaborate with product/design and teammates, review code and document best practices, evangelize Android best practices and AI code-generation tools, and participate in on-call rotation to support production systems.

The Software Engineer will enhance the structured data storage layer in Superhuman Docs, ensuring database reliability, performance, and correct data handling under varying workloads. Responsibilities include improving table management, server-side query planning, and collaborating on formula and sync processes.

Interns write production-quality code for deployment, observability, and environment platforms (Rubix, Apollo, Signals). Work includes full product lifecycle, collaboration with cross-functional teams, mentor pairing, and occasional field engagement with government or defense partners.

Develop and lead front-end web applications and APIs for Chewy's Discovery experience. Collaborate with product, design, data science, and infrastructure teams to optimize search, recommendations, performance, scalability, and 24x7 service reliability. Drive architecture, testing, deployment best practices, and technical leadership across the organization.

Build and operate privacy-preserving, high-traffic search services. Implement full-stack features, shape architecture, address tech debt, deploy and monitor services, participate in on-call rotation, and collaborate across product and engineering to release frequent updates.

As a Software Engineer on the Apollo platform, build and maintain systems for software deployment at scale, collaborating with teams to solve complex issues.

The Software Engineer will build APIs and drive containerization goals across Palantir's software platforms, utilizing K8s and collaborating with teams to deliver scalable technical solutions.