Software Engineer Jobs in Bellevue, WA

As a Backend Engineer, you'll design, implement, and operate critical scalable services, collaborate across teams, and uphold best practices for software quality and system operations.

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.

The Software Engineer will optimize ML infrastructure for training and inference, develop scalable systems, and work closely with ML engineers on producing high-performance models.

Design, implement, and operate scalable backend services, collaborate on product requirements, and ensure high-quality and available systems at Snap Inc.

The Software Engineer will develop and manage data platforms for CoreWeave, focusing on performance, security, and scalability while facilitating data access and compliance with regulations.

Design, build, and operate large-scale backend services (identity, friend graph, persistence). Collaborate cross-team to evaluate trade-offs, ensure availability, scalability, and operational excellence, debug and resolve incidents, and use AI tools to accelerate development while maintaining security and code quality.

Join the Inference team to implement features and improvements for model serving on a GPU platform, focusing on performance and reliability.

The Software Engineer II will design and implement features for the Developer Experience platform, focusing on CI tools, test systems, and integrations. Responsibilities include end-to-end ownership of projects, code reviews, and onboarding new team members.

Develop and implement cloud-based microservices for supply chain workflows. Ensure scalability, reliability, and performance of backend services, while collaborating across engineering teams and establishing API contracts.

As a Senior Software Engineer, you'll develop scalable distributed systems for Chewy's Sponsored Ads platform, mentor engineers, and enhance engineering excellence.

Design and support components for Snap Spectacles' Augmented Reality features, develop SnapOS, and collaborate with various teams to launch products.

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 role involves designing scalable solutions for testing infrastructure, maintaining backend services, and automating validation processes involving Kubernetes and hardware performance.

Lead technical strategy and architecture for Developer Experience: build scalable build/test/delivery systems, improve CI/CD throughput, design internal platforms/APIs/SDKs/CLIs, integrate LLM/agentic tooling safely, mentor senior engineers, and drive cross-team initiatives to increase engineering velocity, reliability, and maintainability at organizational scale.

The Principal Software Engineer will develop ads infrastructure, lead technical direction for the Ads Platform, and ensure high availability and performance of systems. Responsibilities include collaborating across teams and advocating for best practices.

As a Staff Software Engineer, you'll design and operate scalable backend services, collaborate across teams, and ensure high system availability.

Design and implement data platforms, manage data infrastructure, develop streaming architectures, improve performance, and ensure data compliance.

Build and ship Kubernetes-native ML research cluster and sandbox infrastructure. Design operators, CRDs, CLIs, Python SDKs, and orchestration for large-scale distributed training. Work directly with customers to productionize training workflows, improve developer productivity, document OSS training frameworks, and integrate compute, storage, and networking primitives.

Join a small Applied Training team building Kubernetes-native research cluster and sandbox infrastructure for large-scale ML training. Design and implement cluster experiences (CLI, job schemas, operators), own Python SDKs for RL rollouts, work directly with customers and infra teams, document OSS training frameworks, and ship production-grade ML infrastructure solving distribution, scheduling, and isolation at scale.

Lead technical strategy and architecture for CoreWeave's orchestration platform (SUNK). Own critical orchestration components, drive cross-org initiatives in scheduling, quota enforcement, and hyperscale scaling. Mentor senior engineers, establish reliability and observability best practices, and ensure workloads run reliably and efficiently for large GPU ML training and inference clusters.

As a Senior Software Engineer II, you'll design and operate a Kubernetes-native platform for AI workload orchestration, improve performance, and mentor engineers.

Lead design reviews and architecture in a Kubernetes-native inference platform, improve latency and reliability, mentor engineers, and implement optimizations.

The Staff Software Engineer will lead the architecture and design for AI workload orchestration on Kubernetes, mentoring engineers and driving technical initiatives across teams.

As a Senior Software Engineer on the Developer Experience team, you will drive architectural decisions, design systems for developer productivity, mentor engineers, and enhance the platform's capabilities to improve developer workflows and system reliability.

The Staff Software Engineer leads the Developer Experience team, driving technical strategies and addressing complex developer productivity challenges at CoreWeave, focusing on building robust developer platforms and enhancing engineering processes.