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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - VS Code (GitHub - CoreAI) - **Company:** Microsoft - **Location:** Redmond, WA, United States - **Experience:** Expert - **Salary:** $142,800.0 - $274,800.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Computing Platforms, Microsoft Online Services, Software Debugging, Software Design Patterns, Programming Tools, Github, Open Source Technology, Microsoft Copilot, Software Engineering, Strategies of Testing, TypeScript, Rust (Programming Language), AI Coding Agents, Information Technology, Software Coding - **Published:** October 23, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3466535221&tx=FP1108FFK&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role * Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, JavaScript, or TypeScript or RUST OR equivalent experience. Other Requirements Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: * Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years, * 10+ years of software engineering experience, with a track record of architecting, delivering, and evolving complex production software. * Demonstrated technical leadership across multiple teams, including setting direction, building alignment, and delivering substantial initiatives without relying on reporting-line authority. * Hands-on coding and design skills, with the ability to become productive in large TypeScript and Rust codebases. * Experience designing shared platforms, APIs, or large application architectures, with sound judgment about extensibility, compatibility, performance, and maintainability. * Product judgment, including identifying opportunities, setting priorities amid ambiguity, and turning technical decisions into practical designs and measurable improvements for users. * A track record of mentoring experienced engineers and improving the effectiveness of teams beyond your immediate area. * Clear communication skills, including explaining complex technical decisions and navigating tradeoffs with engineering and product partners. Preferred qualifications We welcome a range of product backgrounds; these are helpful experiences, not a checklist. Previous work on developer tools, open-source projects, or AI products is not required. * Experience with TypeScript, JavaScript and Rust. * Experience evolving interactive products with attention to usability and accessibility. * Experience guiding cross-platform architecture, performance improvements, or major migrations in a large application. * Experience establishing experimentation and feedback practices that connect engineering decisions to user outcomes. * Practical familiarity with AI coding tools and judgment about where they help, fail, or change development workflows. * Experience providing technical leadership on AI-powered products, open-source projects, or extensible applications. Product and open source ## Description * Address architectural bottlenecks in large workspaces, proving an approach in code that multiple feature teams can adopt. * Define extension or workspace APIs that unlock new capabilities while preserving compatibility with existing extensions and remote development environments. * Prototype how developers delegate, review, and validate work with Copilot, then establish the product and platform boundaries needed to ship it. * Reshape and support our engineering process with custom solutions fine-tuned for throughput and quality. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As part of GitHub and CoreAI, we build developer tools that materially improve how software is written, reviewed, and shipped, while maintaining a culture of ownership, rigor, and technical excellence. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. Responsibilities * Identify significant product opportunities and systemic engineering problems; set technical direction that balances near-term delivery with long-term product and platform health. * Prove approaches through prototypes, critical implementation, testing, and difficult debugging, using hands-on work to guide architectural decisions. * Lead cross-team delivery across Microsoft and GitHub, resolving architectural disagreements, clarifying ownership and API boundaries, and enabling teams to deliver independently. * Own outcomes beyond release, using adoption, quality signals, evaluations, experiments, and user feedback to guide investment and adjust course. * Improve engineering effectiveness across teams through testing strategies, performance work, shared design patterns, and tools for rapid, reliable experimentation. * Lead technical discussions in the open, investigate community-reported issues, and work directly with developers and extension authors to shape designs. * Mentor senior engineers and technical leaders, helping them develop judgment and take ownership without making yourself a bottleneck.