Top Senior Software Engineer Jobs in Seattle, WA

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.

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, develop, and maintain ground control and mission-planning software for the X-BAT platform. Build full-stack, low-latency, fault-tolerant systems for telemetry fusion, operator UIs (React/TypeScript), communication interfaces, and integrations with autonomy and flight teams. Lead feature development, write well-tested code, and collaborate across embedded, UX, and flight-test teams to deliver field-ready solutions.

Build and maintain large-scale data ingestion platforms, pipelines, integrations, and monitoring tools for Redfin’s real-estate inventory data. Develop applications using relational and non-relational databases, spatial data, Kafka, Java, Python, Kubernetes, Jenkins, Airflow, and AWS. The role involves architecture, technical leadership, mentoring, data quality improvements, production support, and possible on-call participation.

Senior Software Engineer responsible for end-to-end full-stack software development, scalable API design, AWS cloud-native implementations, technical feature leadership, system-level problem solving, and continuous improvements to performance, quality, and efficiency. The role collaborates with product owners and engineers in an agile environment, translates client requirements into technical designs, and supports third-party integrations.

Build and operate full-stack applications and AI-facing features for CoreWeave’s internal data platform. Responsibilities include developing TypeScript, React, Next.js, and Python services; designing APIs and relational data models; integrating analytical data platforms; deploying on Kubernetes; and owning production reliability, testing, observability, and on-call support. The role also involves collaborating with non-engineers to define processes, shipping LLM-backed applications, and evaluating AI output quality.

The Back-End Engineer will design and build core platform services, operate production services, and work on AI-powered features while collaborating with cross-functional teams and mentoring junior engineers.

As a Front-End Software Engineer, you will build AI-powered interfaces, tackle complex design problems, and collaborate across teams to enhance user experiences. Responsibilities include mentoring, implementing responsive UI, and engaging with AI technologies.

Design and implement Android features from design through launch, optimize mobile UX and performance, perform code reviews, evaluate technical tradeoffs, and use AI tools to streamline development while maintaining security and production-quality code.

Design, develop, and maintain full-stack web applications hosted in the cloud. Implement front-end UIs, build backend APIs interacting with cloud services, containerize apps, collaborate with infrastructure engineers, follow Agile and DevSecOps practices, and contribute to extensible, object-oriented codebases.

Develop scalable backend APIs and distributed services for Expedia Group’s advertising platform. Build campaign management and optimization capabilities, improve system reliability and performance, and integrate generative AI, machine learning recommendations, and event-streaming technologies. Collaborate with product, design, data science, and engineering teams, apply automated testing and observability, participate in operational improvements, and mentor junior engineers.

Senior individual contributor who mentors junior engineers, leads complex projects, designs and tests moderately complex systems, creates APIs, debugs and monitors production services, and drives cross-team solutions and operational improvements.

Designs, builds, and operates secure, scalable cloud and GPU infrastructure platforms for enterprise AI/ML workloads. Leads architecture, production coding, Kubernetes and container operations, CI/CD, infrastructure automation, performance optimization, and reliability efforts. Partners with AI/ML and platform teams to support distributed multi-GPU training and inference. Provides technical leadership while advancing responsible AI-assisted engineering, secure SDLC practices, automation, and operational excellence.

Leads architecture and development of JPMC-VPC, a software-defined networking platform replacing legacy infrastructure. Designs control, distribution, and data plane components, gateways, load balancers, and IPAM systems. Builds production software in Go, Python, Rust, or C/C++, applies cloud-native engineering, CI/CD, infrastructure-as-code, observability, and responsible AI practices, and advises senior stakeholders on networking, distributed systems, and technology strategy.

Architect and build high-performance distributed infrastructure for batch and streaming data across global regions. Optimize state management, checkpointing, JVM performance, and exactly-once processing. Develop AI infrastructure including vector indexing, agentic workflows, and real-time data streaming. Own the full software development lifecycle, contribute to shared tooling and SDKs, and mentor engineers through technical leadership and design reviews.

Build and operate secure, scalable AI compute platform services, including backend APIs, asynchronous workflows, Kubernetes controllers, and multi-tenant workload capabilities. The role focuses on distributed training and inference, platform reliability, observability, developer tooling, and infrastructure simplification. Responsibilities include collaborating across engineering teams, improving scalability and developer productivity, and providing technical leadership for production AI platform capabilities.

Design and build secure, scalable platform services for distributed AI training and inference. Develop backend APIs, Kubernetes controllers, orchestration systems, asynchronous workflows, multi-tenant access controls, and developer tools. Improve reliability, observability, scalability, and engineering productivity while partnering with infrastructure and AI teams. The role also provides technical leadership, mentoring, and cross-functional collaboration throughout platform development and production delivery.

Designs and develops highly available cloud services for AI inference workloads. Responsibilities include building Kubernetes controllers and platform capabilities for deployment, scheduling, scaling, recovery, upgrades, observability, and lifecycle management. The role leads production readiness reviews, resolves complex infrastructure issues, improves reliability and performance, drives architecture and design reviews, mentors engineers, and influences technical direction across teams.

Lead the design, development, testing, and deployment of large-scale cloud infrastructure automation software for ServiceNow’s global platform. Build reliable distributed systems, improve observability and resilience, develop automated testing and CI/CD practices, modernize platform capabilities, and mentor engineers. Collaborate with product managers, architects, stakeholders, and distributed engineering teams while applying AI-assisted development and reliability engineering techniques.

Design, architect, implement, and optimize high-performance iOS camera features (primarily Objective-C). Develop and launch stable mobile features, collaborate with Design, perform code reviews, and leverage AI tools responsibly to accelerate development while ensuring performance, security, and production quality.

Design, implement, deploy, and operate resilient online database infrastructure at scale. The role focuses on distributed systems, infrastructure tooling, reliability, performance, cost optimization, developer enablement, roadmap planning, and maintaining high engineering standards.

Build and maintain Pure1 Manage SaaS platform and web applications across frontend and backend. Develop subscription/commerce features, data pipelines, and ML-driven analytics. Use AI tooling for code generation, work with microservices, containers, Kubernetes, and collaborate with UX and stakeholders to take projects to production while owning testing, CI/CD, and code review.