Experience

Independent AI Product Builder

Seattle, Washington

Building AI products independently after Microsoft.

• Built and shipped Watt Fighters (wattfighters.com), a multiplayer 3D track-cycling game, in 8 days with many Claude Code sessions working in parallel: online racing, 20 velodromes, and apps for iPhone and iPad (TestFlight), Android and Windows.
• Building AI Breaker (aibreaker.org), a Windows app that lets people turn off AI features in graduated levels.
• Built a multi-tenant hosting and email platform with MCP-based AI apps in 16 days (wilssens.com): isolated server code and database per site, automated mailbox provisioning, and every action available on the web, over MCP and from a command line.
• Runs juniortrackcycling.com, a content and analytics site for the junior track cycling community.

Principal Group Product Manager - Windows & Devices Data

Redmond, Washington

Led product management for the entire Windows & Devices Data organization: the data, insights, experimentation, and machine learning models that power decision-making across Windows and Devices.

• Led a PM organization of about 20, working with more than 100 developers and data scientists, initially through three people managers, then led its move to a flatter team of about 12 during Microsoft’s cost reductions; roughly half the team was promoted under my leadership.
• Owned strategy and roadmap for the data platform and insights products Windows engineers and PMs use to ship higher-quality releases.
• Built the quality measurement framework that underpinned Windows K2, Microsoft’s high-profile push to improve Windows reliability and performance.
• Ran the weekly ship-readiness quality review where Windows VPs made release decisions based on my team’s data on ship-blocking issues.
• Scaled experimentation across Windows to hundreds of concurrent experiments, significantly reducing the number of features pulled back after release.
• Owned the multi-million-dollar Windows data infrastructure budget; shut down a low-adoption on-device model platform and reinvested in platform modernization, cutting costs 30% over two years.
• Shifted the team to AI-driven analytics and launched the first version, letting people ask business questions in natural language across every source in the data platform instead of relying on fixed queries.
• Partnered with engineering, data science, and research leadership across telemetry from more than 1.6 billion Windows devices.

Principal Product Manager Lead - Windows Data

Redmond, Washington

Built data products that told the story of the Windows customer experience and informed continuous improvement.

• Redefined Windows quality measurement around end-to-end scenarios like gaming and the shell, creating the Perfect Day metric for issue-free user days.
• Grew the team from one to five PMs, working with about 20 developers, leading to promotion to Principal Group Product Manager.
• Drove measurable quality gains, with Perfect Day improving about 5% for gaming and 3–4% for the Windows shell.
• Provided the data behind Windows release decisions: whether a build was ready to move from internal audiences to Insider preview, which issues had to be fixed, and ultimately whether a release met the quality bar to ship.
• Built the alerting dashboards Windows teams used to catch customer-impacting issues, and ran the weekly Release Quality Review where area directors acted on them.
• Measured quality across more than 1.6 billion highly diverse Windows devices, data that governed every Windows release from 2020 to 2026.

Principal Product Manager Lead - Azure DevOps

Redmond, Washington

Defined new products, go-to-market strategies, and business decisions for the Azure DevOps Platform.

• Defined DataOps as its sole product lead: a startup-style project inside Azure DevOps before it had a funded team, writing the product proposal that got it funded and moved to GitHub as its better home.
• Chose the Windows Data lead role over following the newly funded team to GitHub.

Principal Product Manager Lead - Silicon, Graphics, Media

Operating System Group · Redmond, Washington

Led audio, spatial audio, game streaming, xCloud, Game DVR, broadcast, and casting initiatives.

• Led six PMs, working with about 20 developers.
• Led the Microsoft Spatial Audio Platform across Windows, Xbox One, and new platforms.
• Grew monthly active devices playing spatial audio by more than 250% over 1.5 years.
• Worked with developers and data insights to identify and deliver essential spatial audio features.
• Partnered with game studios to ship spatial audio in major franchises, including Halo, Forza Horizon, Gears of War and Call of Duty.
• Shaped Xbox xCloud game streaming strategy, prioritizing low latency over 4K resolution and making it the platform's key differentiator.

Principal Product Manager - Silicon, Graphics, Media

Operating System Group · Redmond, Washington

Drove the Windows Sonic spatial audio platform for Windows and Xbox One while representing Microsoft at developer and game conferences.

• Drove the launch of Dolby Access v3 and DTS Sound Unbound with new app services, licensing, and customization models.
• Built partnerships with Surface, Store, Marketing, and Gaming to expand spatial audio to more endpoints and games.
• Collaborated with Disney+ and Netflix to bring Dolby Atmos to Xbox and Windows.

Senior Product Manager - Silicon, Graphics, Media

Operating Systems Group · Redmond, Washington

Led media platform work across casting, conferencing and spatial audio, culminating in the Spatial Audio Platform and Windows Sonic for Windows and Xbox One.

• Brought casting to Windows and Windows Phone, shipping Miracast, DLNA and Play To so people could send media from a PC or phone to a TV.
• Enabled HD conferencing on Surface RT and drove Media Foundation and Windows SDK work for media developers.
• Brought spatial sound to Windows and Xbox: Windows Sonic for headphones, plus Dolby Atmos and DTS:X across headphones, home theater, and built-in laptop speakers on Surface, Lenovo and other devices.
• Asked in 2015 to define the next revolutionary step for audio at Microsoft, leading to the Spatial Audio Platform and Windows Sonic.

Product Manager - Developer Division

Redmond, Washington

Product manager in Microsoft's Developer Division working on developer ecosystem and community products.

• Launched the Visual Studio Marketplace, giving developers one place to find and share Visual Studio extensions.
• Drove CodePlex, Microsoft's open-source project hosting site.
• Released the .NET Framework reference source, so developers could read and debug into the framework code.

Lead Developer and Team Lead

Belgium

Led a team of about 15 developers and the Project Support Office for Fluxys.

• Owned hiring, evaluation, education, and job assignment for the development team.
• Implemented a new development process and framework, coached developers and architects, and managed build infrastructure.
• Presented application development and Visual Studio Team System practices to customers and developer communities.

Software Developer

Antwerp Area, Belgium

Built and supported software components across C# client and Java server systems using CORBA middleware. Joined as a consultant from Info Support, then hired full-time.

• Provided technical guidance, application redesigns, developer support, and code reviews.
• Worked on the Technical Components team responsible for construction, maintenance, and support.

Developer and Trainer

Belgium

Developed distributed .NET applications and trained teams across multiple organizations.

• Led a development team at Agfa Gevaert and built C# and Visual Studio .NET applications for several clients.
• Created scalable ADO.NET and SQL Server solutions and advised project and management teams on .NET architecture.
• Delivered software development, architecture, and training work across the full delivery lifecycle.

Bachelor’s degree, Computer Science

Karel de Grote, Belgium

Languages: Dutch and English (native), French (intermediate).