Top Senior Software Engineer Jobs in Seattle, WA

Develop and maintain cloud-based web applications using modern technologies, collaborate with teams, and ensure secure software delivery processes.

The role involves implementing and optimizing UI systems for military simulations in XR environments, collaborating with UI Artists and stakeholders to deliver high-performance solutions.

Develop features for Android applications, conduct code reviews, and evaluate technical tradeoffs while ensuring great user experiences.

The Software Engineer will lead the design and implementation of ML workflows, focusing on building, deploying, and maintaining ML systems for pricing. Responsibilities include managing data pipelines, collaborating with cross-functional teams, mentoring engineers, and improving ML lifecycle processes.

Design and build AI-driven automation and integrations for financial workflows and ERP systems. Partner with finance stakeholders to identify automation opportunities, implement reliable data pipelines and observability, and apply software engineering best practices to production financial systems.

As a Software Engineer in Buyer Growth, you will drive growth initiatives, design end-to-end systems, and mentor engineers in a fast-paced environment.

Design and build large-scale systems for managing merchandise, ensuring data synchronization across platforms, and collaborating with cross-functional teams to support enterprise-level sellers.

Build and maintain React-based, high-performance web experiences for acquisition. Own full development lifecycle, implement A/B experiments, ensure accessibility and testing, mentor engineers, and deliver scalable, production services.

The Senior Full-Stack Software Engineer will lead development efforts, mentor team members, shape technical architecture, and deliver scalable services for member growth.

As a Staff Full-Stack Software Engineer, you will lead initiatives on member growth, providing architecture and technical solutions, mentoring engineers, and driving projects from inception to completion.

The Senior Full Stack Software Engineer will develop user-focused software features, manage end-to-end functionality, and ensure high-quality code. Responsibilities include collaborating with cross-functional teams while driving best practices and technical excellence.

The Senior Full Stack Engineer will design and develop user-friendly experiences, lead product enhancements, mentor junior engineers, and participate in on-call rotations to ensure service reliability.

The role involves designing and building scalable software for Dropbox, collaborating with product teams, mentoring engineers, and ensuring service operations.

The Senior Software Engineer will design and support Kubernetes infrastructure, develop applications in Go, and enhance platform reliability, performance, and observability in CoreWeave's AI-focused environment.

The Software Engineer role involves building scalable discovery systems, integrating machine learning for recommendations, and collaborating with cross-functional teams to enhance the platform experience.

Lead the development of a high-scale Customer Support platform, translating user needs into technical solutions and driving delivery. Engage in building user experiences and automations to enhance customer satisfaction and support operations.

As a Software Engineer on the Seller Growth Platform, you'll design systems for fraud detection, scalable infrastructure, and seller success while balancing growth and trust.

The Software Engineer, iOS will create high-performance mobile apps, design and implement software for Snapchat's camera, evaluate technical trade-offs, and ensure code quality through reviews. Candidates should have strong iOS development skills and experience with Objective-C and Swift.

Lead development of Chewy's customer-facing components, enhance search and recommendation systems, ensure application performance, and support operations with a focus on best practices.

Design, develop, and deploy web applications; collaborate with UX engineers; implement intuitive UIs; participate in code reviews; use Agile methodologies.

The role requires building and improving frontend applications using React and Next.js, architecting complex systems, and leading development efforts, with a focus on high-quality user experiences.

As a Software Engineer on the AI Products Team, you will develop new features and improve LLM model results while engaging with customers and shaping team culture.

Lead the frontend platform's evolution, architect complex UIs, mentor engineers, and drive performance and testing excellence while collaborating with cross-functional teams.

Design, build, deploy, and optimize scalable full-stack applications integrating databases, APIs, and AI/LLM workflows. Lead architecture, CI/CD (ArgoCD, GitLab), Airflow pipelines, and collaborate cross-functionally to deliver production-grade fintech solutions.

The iOS Software Engineer will maintain the CI/CD pipeline and Bazel build system, improving mobile build scripts and collaborating with cross-functional teams to streamline development and increase efficiency.