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graham@mccarthy:~$
~/vancouver-bc: engineering leader × game developer

Hey, I'm Graham.

By day I lead engineering teams. By night I ship multiplayer games. I co-founded Hypercontext (YC S21) and ran its engineering and product for fifteen years, growing it to 250,000 users. Now I lead the teams behind search, exports, and AI reporting at Brex.

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linkedin ↗github ↗
Graham McCarthy
player_one.png● online
17+
yrs xp
6
games built
2x
founder

# recent_posts

all posts →
2026-08-21The Build Was Green and the Lick Was UnplayableBuilding Fretstart, a daily practice coach for blues and rock guitar, and learning to test music instead of just code.2026-07-31My AI Filed 51 Issues Against Its Own Code. Then It Shipped the Fixes.The interesting part of AI development isn't code generation. It's handing the whole maintenance loop to the AI, keeping the merge button, and watching it find its own bugs.2025-12-04Building Multiplay Games with AI-Powered DevelopmentHow I built a real-time multiplayer party games platform with AI-assisted development: the prompting workflow, the realtime architecture, and what I'd do differently.2025-01-29My Engineering Management READMEMy leadership philosophy, values, and approach to engineering management.

# featured_projects

all projects →