Top Tech Jobs & Startup Jobs in Seattle, WA

Principal Software Engineer responsible for designing, coding, testing, deploying, and operating AI-powered applications, agents, integrations, and workflows. Leads architecture, reliability, observability, security, compliance, experimentation, and production support while mentoring engineers and coordinating cross-team delivery. The role requires building scalable, maintainable solutions, managing dependencies, driving engineering excellence, and responding to live-site incidents through on-call responsibilities.

Develops post-training and adaptation methods for foundation, language, diffusion, and multimodal models. Responsibilities include reinforcement learning, fine-tuning, architectural adaptation, inference-time steering, evaluation tooling, and scalable ML infrastructure. The role translates enterprise requirements into secure, efficient AI systems while addressing latency, privacy, safety, compliance, and compute constraints. It also involves research collaboration, production deployment, technical documentation, and mentorship.

Design and build AI-powered systems, agentic platforms, distributed services, and cloud infrastructure for Azure PostgreSQL. Develop capabilities for context understanding, planning, tool use, knowledge retention, collaboration, and reliable execution at scale. Integrate AI into developer workflows, drive features from architecture through production, and ensure quality, security, observability, and operational readiness. Collaborate across engineering, product, and research teams while contributing technical direction, reviews, best practices, and mentorship.

Lead product strategy and execution for Microsoft WebIQ, expanding specialized vertical capabilities across AI information experiences. Define platform requirements, evaluate new domains, guide capabilities from ideation through launch and adoption, establish success metrics, and align product, engineering, data, business, and partner teams. The role requires strong technical product judgment, business acumen, and the ability to influence across organizational boundaries in an ambiguous, rapidly evolving environment.

Lead architecture, development, and operation of highly available distributed cloud systems powering Microsoft 365, Copilot, AI agents, search, retrieval, indexing, and data processing. Drive scalability, reliability, security, performance, and operational excellence; collaborate across teams, improve diagnostics and incident response, shape platform strategy, mentor engineers, and promote engineering best practices.

Lead vision, strategy, and execution for next-generation content intelligence products. Drive zero-to-one discovery, prototyping, and experiments; define reusable intelligence systems (knowledge, ranking, agents); partner cross-functionally to integrate into Edge, Windows, MSN, and Copilot; set success criteria and transition proven experiences to scale; mentor PMs and influence senior leaders.

Lead the design, development, testing, and delivery of complex software components for Microsoft's Ads SDKs. Improve performance, reliability, scalability, observability, CI/CD, automation, and developer experience. Collaborate with architects and product teams, apply AI-powered tools, use telemetry and experimentation to validate system health, and ensure security, privacy, compliance, and production readiness.

Investigate and resolve electrical interference, signal pickup, vibration, and long-term drift in quantum hardware and instrumentation. Build and validate test racks, perform low-noise and cryogenic system troubleshooting, support on-site rack deployments and upgrades, and recommend improvements to cabling, shielding, grounding, layout, and vibration isolation. Analyze and document results while collaborating with cross-disciplinary teams.

Lead global, cross-functional technical programs for Microsoft datacenter infrastructure. Develop multi-year strategies, manage dependencies, risks, governance, execution metrics, and operational readiness across distributed engineering teams. Optimize infrastructure utilization, scalability, availability, performance, security, and sustainable cloud operations. Partner with senior leaders and teams across engineering, operations, finance, and external stakeholders to pilot, scale, and deliver impactful infrastructure initiatives.

Lead the vision and strategy for Agentic Engineering across Microsoft 365 Copilot and BizChat. Define AI-agent capabilities across the software development lifecycle, build scalable platforms and workflows, establish productivity and reliability metrics, drive organizational adoption, and align senior product and engineering leaders across teams.