Top Staff Engineer Jobs in Seattle, WA

Design, build, deploy, and maintain scalable backend services and APIs using Ruby on Rails. Lead retailer integrations, automate workflows, resolve integration issues, and improve platform reliability. Collaborate with cross-functional teams on requirements, technical designs, code reviews, testing, releases, documentation, and business solutions. The role includes on-call support approximately 10 days per month.

The role focuses on advancing DevOps solutions, collaborating with teams, and addressing client challenges while enhancing technical skills.

Lead the architecture and implementation of Amplify’s design system, including reusable React components, design tokens, frontend infrastructure, documentation, and contribution workflows. Partner with Product, Design, and Engineering teams to establish standards, accessibility practices, governance, and adoption across products. Mentor engineers, guide technical decisions, improve development workflows, and explore AI-assisted development practices.

Lead the development of an AI-powered platform for senior mental health, building systems for patient experience, and mentoring the engineering team.

Leads design, development, testing, release, and maintenance of satellite flight software for imaging payload and ADCS subsystems. Provides technical expertise, supports requirements and test planning, performs root-cause analysis, and collaborates with systems, embedded, operations, and mission teams. The role requires hands-on C/C++, Python, embedded Linux, cross-functional leadership, and delivery of reliable mission-critical software with minimal supervision.

Build the core AI platform for an AI-native trading experience. Develop a high-performance Rust backend supporting streaming responses, low-latency tool execution, caching, and model orchestration. Design secure, observable APIs and runtime components with authentication, authorization, rate limiting, auditing, tracing, retries, and fallbacks. Build safe trading action infrastructure with deterministic previews, confirmations, idempotency, and audit logs while partnering with product and frontend teams.

Leads development of resilient, scalable features across Toast’s enterprise Sports and Entertainment platform, including backend, frontend, and POS systems. Responsibilities include designing, deploying, testing, monitoring, and maintaining production services; leading complex technical projects; collaborating with Product, Design, Customer Success, Sales, and other teams; mentoring engineers; and using AI tools to improve development productivity.

Develop state estimation and navigation algorithms for autonomous systems operating in GPS-denied environments. Build production-grade C++ software for embedded Linux robotic platforms, create modeling and simulation tools, and implement comprehensive testing and validation. Collaborate on roadmap planning and agile execution while improving benchmarking and performance-analysis pipelines. The role requires professional C++ expertise, state estimation algorithm experience, sensor-fusion familiarity, and the ability to deploy reliable autonomy software.

Full‑stack staff engineer to ship web products end-to-end, iterate on and expand a suite of sales/CRM-focused tools, define engineering culture and best practices, and hire/mentor future engineers. Must move fast in a small team, engage with users, and solve new problems creatively.

Lead end-to-end mission systems engineering for advanced unmanned aircraft, including architecture, requirements, payloads, avionics, communications, weapons, integration, certification, and flight testing. Drive system-of-systems trade studies, integration campaigns, technical maturity, and compliance with aerospace standards. Serve as a technical subject matter expert while coordinating with program management, customers, partners, and suppliers to deliver fielded mission capabilities.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

Lead complex card payments acquiring projects from design through production, building and operating highly reliable systems. Apply deep ISO 8583 and card-network expertise to routing, authorization, capture, clearing, settlement, reconciliation, and processing costs. Write production code, develop certification tooling, debug payment messages, establish reusable standards, mentor engineers, use AI coding agents responsibly, and participate in on-call support for critical financial systems.

Build and architect Clear Street Active, a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional teams on large-scale initiatives while emphasizing scalability, performance, API quality, maintainability, and developer experience.

Lead technically complex card payments projects from design through production while writing and operating highly reliable financial systems. Analyze ISO 8583 messages, network mandates, routing, authorization, clearing, settlement, and processing costs. Build production code, testing and certification tooling, shared frameworks, and operational capabilities. Provide technical direction, mentor engineers, participate in design reviews and incident response, and establish safe patterns for AI-assisted engineering on critical payment systems.

Own the aircraft fuel system from requirements and architecture through design, procurement, integration, testing, flight, and operational support. Design and analyze tanks, pumps, valves, plumbing, venting, sensing, and pressurization systems across demanding flight conditions. Lead supplier engagements, technical reviews, testing, data analysis, failure investigations, and corrective actions while collaborating with propulsion, airframe, manufacturing, supply chain, test, and flight teams.

Own propulsion hardware and engine performance from requirements and architecture through procurement, integration, testing, flight, and operational deployment. Lead design reviews, supplier engagements, instrumentation, data analysis, failure investigations, and corrective actions. Collaborate across engineering, manufacturing, supply chain, test, and flight teams while mentoring junior personnel and supporting rapid autonomous aircraft development.

Build scalable, privacy-safe advertising signals and measurement systems for Snap’s ad platform. Lead end-to-end software and infrastructure initiatives involving signal ingestion, identity matching, data pipelines, measurement, and advertiser ROI analysis. Provide technical direction across teams, optimize availability, scalability, performance, security, and cost, and collaborate with product, machine learning, and advertising partners. Mentor engineers and apply modern AI-assisted development practices while delivering reliable production services.

Lead architecture and technical strategy for a remote engineering organization building a React, Node.js, PostgreSQL, and AWS platform. Mentor engineers, establish engineering standards, drive JavaScript-to-TypeScript migration, design ETL and AI/LLM integration systems, resolve technical debt, and oversee technical design reviews, production support, incident response, hiring, and delivery. Partner with product, clinical, and business stakeholders to build scalable, reliable software.

Build and maintain cloud-native infrastructure, automate manual operations, develop Terraform modules and Helm charts, manage Kubernetes and service mesh configurations, monitor GCP databases and services, improve observability, maintain CI/CD pipelines, and use AI coding agents to enhance infrastructure development. Collaborate with engineering teams on instrumentation, architecture, capacity planning, scalability, reliability, security, and developer experience.

Staff Product Quality Engineer role at CoreWeave. The provided posting contains compensation, benefits, equal opportunity, accommodation, and export-control information, but does not specify detailed responsibilities, technologies, or qualification requirements.

Lead end-to-end development of reliable care-agent tooling and software services integrating contact-center platforms with backend systems. Own architecture, performance, security, production operations, and technical direction while partnering with product, care operations, QA, and engineering teams. Translate operational workflows into scalable solutions, mentor engineers, and improve tools using agent feedback, operational metrics, and AI-assisted development practices.

Lead technical vision and strategy for Affirm’s Cards backend engineering organization. Architect scalable and reliable platforms, guide cross-team initiatives, champion AI adoption and engineering excellence, influence technical roadmaps, and mentor engineers through Staff level. The role requires strong architectural expertise, organizational leadership, project management, communication, and cross-functional collaboration.

Lead technical execution and architecture for the Loyalty product. Own roadmap, design distributed services and APIs, ensure reliability/observability, integrate with ZMP and AthenaOS, build and coach engineering teams, and drive cross-team delivery of scalable multi-tenant loyalty capabilities.

Set technical direction for Toast’s Developer Experience platform, including local development, build tooling, shared libraries, testing frameworks, and developer portals. The role combines hands-on software engineering with architecture, cross-team technical leadership, AI-assisted development, developer productivity measurement, mentorship, and roadmap prioritization.

Lead operational reliability and platform enablement for Databricks: build monitoring, CI/CD, deployment standards, compute and job policies, observability, runbooks, and governance to support secure, cost-aware, production data workloads across regulated environments. Mentor engineers and align platform with cloud/infrastructure and compliance requirements.