Top Software Engineer Jobs in Seattle, WA

Develop scalable web applications, data platforms, and distributed systems supporting fulfillment center operations. Build real-time data applications and integrate machine learning workflows using cloud services such as Amazon SageMaker. Write maintainable, tested code; improve CI/CD, observability, reliability, availability, and performance; and collaborate with scientists, product managers, and operations stakeholders.

Develop and maintain cloud-native financial technology services, APIs, event-driven integrations, and data pipelines connecting commerce, procurement, warehouse, marketplace, and Oracle ERP systems. Write tested Java and SQL code, participate in reviews and Agile planning, support production services, troubleshoot issues, and collaborate with engineering, product, finance, and accounting stakeholders. The role offers mentorship while developing skills in cloud architecture, secure software practices, financial processes, and responsible AI-assisted development.

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.

Design, develop, test, and maintain resilient full-stack checkout services used at high scale. Build APIs, data models, and secure performant code; contribute to testing, code reviews, observability, CI/CD, and production operations. Troubleshoot reliability and scalability issues, collaborate with product and engineering teams, and integrate AI/ML-enabled solutions. Support documentation, knowledge sharing, and reusable solutions across services.

Build and ship production software across Superhuman’s AI-powered productivity products. Develop features using modern web frameworks, large language models, natural language processing, and intelligent automation. Contribute to scalable distributed systems, testing, deployment, and system design while collaborating with product, design, and engineering teams. The role emphasizes mentorship, rapid growth, independent execution, and delivering reliable user experiences to millions of users.

Develop Android applications and complex mobile features that improve the home-buying experience. Collaborate with product, design, and engineering teams; review code; write documentation; establish best practices; and maintain reliable, testable codebases. Optimize performance, support experimentation, use approved AI code-generation tools, and potentially participate in an on-call rotation for production systems.

Build and ship full-stack software for CoreWeave’s internal data infrastructure and operational applications. Develop TypeScript, React, and Next.js frontends; Python services on Kubernetes; SQL queries and data models; and AI-enabled interfaces such as text-to-SQL tools, retrieval systems, and agents. Own scoped features through production, including testing and post-release fixes, while collaborating with senior engineers and internal users.

Software Engineer Interns design, build, test, and debug production-quality software for autonomous systems. Projects may involve applications, embedded flight software, firmware, machine learning, simulation, APIs, data pipelines, or cloud infrastructure. Interns analyze requirements, collaborate with engineers using Agile practices, and deliver real features or capabilities during a 10–12 week paid internship.

Own the development and maintenance of large-scale React Native applications for iOS and Android. Lead architecture improvements, React Native upgrades, native module development, performance optimization, automated testing, CI/CD reliability, and production debugging. Collaborate with cross-functional product pods, contribute to technical discovery and architecture, mentor engineers, and raise engineering standards while delivering scalable, maintainable mobile experiences.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Lead design, development, integration, and validation of complex ground-system software. Define software architecture, derive and trace software requirements, participate in system reviews, collaborate with hardware/network/test teams, and support customer-facing technical deliverables.

Build and lead scalable data governance systems across the data platform, including privacy policy enforcement, metadata and lineage management, data security, regulatory compliance, and purpose-driven access. Architect reliable systems for high-volume data environments, shape technical strategy and roadmaps, collaborate with Privacy, Legal, Security, and Trust teams, and mentor engineers across backend infrastructure and data engineering.

Develop and operate backend systems supporting post-transaction processing for Affirm Card. Break down projects, write tested and extensible code, collaborate with product and engineering teams, monitor system health, troubleshoot issues, participate in on-call support, and contribute to code reviews and team development.

Design and own secure, scalable wallet infrastructure for custody, key management, transaction signing, authorization, recovery, and multichain systems. Architect support for MPC, HSMs, secure enclaves, TEEs, smart contract wallets, account abstraction, and emerging cryptographic approaches. Define security boundaries, policy engines, secrets management, authentication, and programmable authorization while making foundational build-versus-buy decisions and guiding systems from first principles through production.

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.

Build and scale Go backend services for agent quoting, configuration, and application submission. Design APIs and distributed systems, write unit and integration tests, resolve partner-specific issues, contribute to architecture, support production debugging, improve CI/CD automation, and use AI coding tools in daily engineering workflows. Collaborate with adjacent teams and mentor teammates through pairing and documentation.

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.

Design, build, and maintain scalable backend payment services supporting global payment processing. Implement secure data handling, improve reliability via observability and automation, apply software design principles, collaborate with cross-functional teams, and contribute to architecture and GenAI-driven improvements for high-availability, production systems.

Design, build, and operate scalable Java backend services (microservices/REST) for Expedia's air supply platform. Own end-to-end lifecycle including design, testing, deployment, monitoring, incident response, and performance optimization. Collaborate with product, design, and partners and apply data-driven and AI/ML approaches to improve reliability and user outcomes.

Senior Software Engineer role at Atlassian with flexible work options across countries where the company has legal entities. The provided description contains no specific engineering responsibilities or qualifications. Compensation includes a U.S. base salary range of $149,400 to $235,000, varying by geographic zone, plus potential benefits, bonuses, commissions, and equity.

Leads complex software engineering initiatives from technical design through launch, provides architectural and technical leadership, drives engineering standards, mentors engineers, and collaborates across teams on company-wide projects. Requires deep experience building and operating scalable systems with strong testing, reliability, security, and observability practices, plus full-stack development expertise and familiarity with A/B testing.

Principal Software Engineer role at Atlassian with flexible remote, office, or hybrid work options. The provided description primarily details compensation, benefits, company culture, equal employment practices, and employment verification requirements; specific responsibilities and technical qualifications are not included.

Provides technical leadership on complex software projects from design through launch, addressing architecture, reliability, security, testing, and observability at scale. Leads company-wide engineering initiatives, establishes technical standards, mentors engineers, and promotes engineering excellence. Requires extensive full-stack development experience, strong communication, systems engineering expertise, customer-focused decision-making, and familiarity with A/B testing.