Magnus McCune
Thoughts on software, technology, and building products.
★Featured
Agent-Driven Development: How AI Tools Built This Blog
•9 min read
Using Claude Code with Serena MCP and Linear integration to build a modern web application through specialized AI agents.
productivitydevopswebdevwriting
From 706 Over-Tests to 52 Right-Sized Tests: Building a Scalable Test Infrastructure
•13 min read
How we fixed a 5-to-1 test-to-code ratio, established proper unit vs E2E boundaries, and built a test suite that actually helps development.
testingtypescriptwebdevdevops
Building a Zero-JavaScript Blog with Island Architecture
•11 min read
How we built a high-performance blog that ships 0 KB of JavaScript by default using Next.js 15, React 19, and server-first architecture.
architecturenextjsperformancewebdev