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Jeremy K. Johnson

a.k.a., "Twisting Mercury"

Engineering leader, software architect, and builder of tools that make developers more effective.


  • My Career


    Two decades of engineering leadership, from hands-on coding to scaling teams and systems. Case studies, war stories, and lessons learned.

  • My Projects


    Side projects and explorations in AI-assisted development, deterministic agent coordination, and developer tooling.

  • Updates


    Follow my progress, wins, and face-plants as I build in the open.


Building better tools for AI-assisted development. Opinions are my own.