I build teams and software — particularly Open Source software. You might know me as creator of Flask or other Open Source projects.

For a decade I poured my energy into Sentry. Now building something new at Earendil.

• Read my Technology Blog
• or my Darker Thoughts
• Follow me as @mitsuhiko.at on Bluesky
• or mitsuhiko on Twitter/X
• Find me as mitsuhiko on GitHub
• You can also sponsor me
• Or send me an email
• Or learn more about me