06 — Writing

Notes from production

Long-form notes on building software — real-time systems, developer tools, and the occasional rabbit hole.

Dec 12, 20244 min read

I Built My Own CodeSandbox Because Real-Time Collaboration Died

CodeSandbox killed real-time collaboration. So I built code.rajkar.me — a live coding interview platform with collaborative cursors, instant session control, and zero friction.

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