About Mark

Resume (PDF) | LinkedIn | GitHub

Mark Reay is a seasoned engineering leader and platform builder with over 17 years at Microsoft, where he architected and led initiatives across accessibility, compliance, and software supply chain security. He is the technical force behind Accessibility Insights, Microsoft's open-source suite of accessibility tools, and the the One Compliance System, a platform bridging compliance policy and engineering execution. Most recently, he led development of Microsoft's SBOM infrastructure—enabling secure, open-source provenance across enterprise software pipelines.

Mark brings a unique blend of deep technical expertise and human-centered leadership, having guided globally distributed teams of 30+ engineers while remaining hands-on in architecture, AI-driven tooling, and open-source evangelism. He is widely recognized for building systems that last—and for mentoring engineers who thrive. Whether launching platforms, scaling teams, or pioneering developer tools, Mark leads from code, from principle, and from purpose.

Mark graduated summa cum laude from the University of Washington in 2002 with a Bachelor of Science with Distinction. He co-authored “Relaxed MultiJava: balancing extensibility and modular typechecking”, presented at ACM OOPSLA 2003.