Software Engineer Jobs in Bellevue, WA

Author, profile, and optimize CUDA GPU kernels for LLM inference to maximize throughput and minimize latency. Build reproducible microbenchmarks and MLPerf workflows, collaborate across product, hardware, and orchestration teams, lead designs and reviews, mentor engineers, and translate kernel wins into end-to-end model-serving performance improvements.

Lead design and implementation of Snowflake's core streaming and transformation primitives. Drive multi-quarter technical investments for performance, scalability, correctness, and reliability. Partner across product, research, and engineering, run architectural reviews, mentor engineers, and work with customers to prioritize real-world needs. Publish and represent Snowflake's technical work externally.

Join as a founding full-stack engineer to write clean, maintainable code, own production services and on-call responsibilities, build and operate hardened infrastructure at scale, leverage AI tools while retaining deep stack knowledge, and investigate complex technical unknowns.

Design, build, and operate production services and infrastructure for key management, encryption, and decryption. Help architect and scale an in-house card-processing environment, write production code and operational tooling, collaborate on migrations and cryptographic adoption, and participate in a light on-call rotation to ensure availability and security.

The Software Engineer will design, develop, and maintain backend APIs, collaborate on B2B solutions, and enhance performance while aligning backend architecture with product strategy.

Design and implement internal full-stack web applications and services (frontend, backend, APIs, and databases). Build CI/CD pipelines and automated test suites, perform code reviews, analyze operational metrics, collaborate with product stakeholders, and own medium-to-large projects end-to-end. Develop AI-assisted internal tools in Python using LLMs and RAG to improve productivity and automation.

You will design and build features and distributed platforms, drive infrastructure initiatives, and collaborate with teams to deliver solutions.

Design and develop resilient distributed systems, deliver cloud automation frameworks, and resolve complex technical issues. Requires backend software experience and knowledge of multiple programming languages.

Build and scale infrastructure automation and operations solutions that detect, prioritize, and remediate vulnerabilities. Develop AI/ML-driven analysis and anomaly detection, integrate security tooling (e.g., Tenable, CrowdStrike), and deliver CI/CD-enabled automation frameworks across large-scale cloud environments (AWS/GCP/Azure). Collaborate with engineers, security, and operations to harden systems and operationalize vulnerability management at scale.

Design and build a proto-driven code-generation pipeline to emit Go SDKs, CLI commands, and Terraform resources. Own API service framework components end-to-end, enforce API standards, collaborate with teams on API design, improve developer experience, and mentor engineers.

Design, build, and maintain production platforms and services that automate and operate CoreWeave's network (config generation, provisioning, workflow automation, observability, CLIs/APIs). Lead technical direction, plan multi-month projects, write high-quality Python and Go software, define SLOs/SLIs, reduce manual toil, participate in on-call, mentor engineers, and collaborate across Network, Observability, Fleet, and HPC teams.

Design and build AI agents, first-party web and mobile apps, and scalable backend services. Integrate LLM frameworks and enterprise systems, implement APIs and microservices, ensure observability and security, and collaborate with Finance, Security, and Engineering stakeholders.

Design and build scalable, secure infrastructure and core clean-room features for multi-party data collaboration. Implement developer APIs, AI-enabled capabilities and agents, partner with product and cross-functional teams to deliver production systems, and mentor peers to ensure technical excellence and privacy-preserving analytics.

Build and support Wibey, a GenAI super agent that helps developers build, deploy, troubleshoot, and support applications. Research GenAI frameworks and protocols, integrate other agents, and develop scalable full-stack UI and backend services. Responsibilities include architecture, REST APIs, testing, CI/CD, infrastructure management, monitoring, alerting, troubleshooting, operational support, documentation, and mentoring junior developers.

Provide technical leadership and hands-on development for Teamfight Tactics build services, CI/CD pipelines, test automation, release management, developer tools, and foundational deployment systems. Optimize build performance, monitoring, metrics, and workflows across mobile and desktop environments. Collaborate with gameplay, backend, and core technology teams, drive architectural decisions, maintain engineering standards, support production and internal builds, and mentor engineers.

Design, develop, and maintain high-performance enterprise software using C++ and Java. Lead modernization, refactoring, technical debt reduction, and cloud-native development initiatives. Integrate AI/ML capabilities, promote engineering best practices, and provide technical mentorship. Collaborate with architects, product managers, and global teams to deliver scalable solutions while championing Agile methods, CI/CD, automated testing, and secure software development.

Develop and deploy scalable backend services, APIs, microservices, and cloud capabilities supporting T-Mobile customer platforms. Collaborate on technical design, architecture, documentation, data flows, testing, deployment, reliability, and resiliency. Contribute to technology strategy, engineering efficiency, modernization, technical debt reduction, and agile software delivery while independently developing solutions and supporting cross-functional engineering teams.

As a Senior Software Engineer in Cluster Orchestration, you'll lead multiple services, drive improvements in performance and reliability, and mentor junior engineers.

The Senior Software Engineer will enhance Kubernetes-native benchmarking services while improving performance and reliability, mentoring junior engineers throughout the process.

The Senior Software Engineer II, AI/ML leads designs, enhances architecture, optimizes multilayer systems, mentors engineers, and ensures service reliability at CoreWeave.

As a Staff Engineer, you'll lead the orchestration platform strategy, mentor engineers, and ensure reliable workloads across GPU clusters, directly impacting AI innovation.

Responsible for designing and optimizing foundational services and SDKs, collaborating with product teams, and enhancing user experience through efficient algorithms and backend functions.

Lead design and development of Windows desktop applications, enforce best practices, drive accessibility efforts, and manage feature lifecycles from conception to maintenance.

The Senior Software Engineer will build and maintain foundational services and SDKs, optimize functionality, and collaborate with product teams to enhance user experience.

Lead quality engineering for Salesforce AI-powered Sales Agent and Forecasting products. Design scalable AI-first testing frameworks and automation suites, validate LLM integrations, prompts, agentic workflows, and deterministic behaviors, and perform white-box testing. Implement human-in-the-loop model evaluations for relevance, safety, and contextual accuracy. Collaborate with developers, product managers, data scientists, and AI/ML engineers throughout the agile CI/CD lifecycle while addressing code quality gaps and test flakiness.