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Stacey Haffner

Stacey Haffner is the Director of Microsoft's OSPO and a developer advocate, where she focuses on open source, AI, and the future of developer tools. For over a decade she's been a product leader, builder, and teacher, working across startups and big tech on .NET, Xbox, Unity, and much more. She's also an independent game developer and teaches on YouTube at youtube.com/@staceyhaffner.

Posts by this author

Gaming

Beyond the engine: 10 open source projects shaping how games actually get made

Check out these 10 open source tools that help game developers create art, animation, levels, audio, dialogue, debug UIs, and engine-ready assets.

Stacey HaffnerMay 21, 2026

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