Stefan Pantelich

Senior AI & Full-Stack Engineer · LLM Agents, RAG & Automation · Python, TypeScript

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The Stripe webhook bug that quietly creates duplicate subscriptions

A blog's front page returned 404 while the posts behind it returned 200. What a dead root with live pages does to a survival check

Before quoting custom work, separate facts from assumptions

I Solved a Personal Problem. Months Later, 100+ People Are Using It.

I shipped two free solopreneur spreadsheets: monthly P&L + quarterly tax set-aside

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