Fullstack Software Engineer
I build fullstack products and explain what I learn along the way.
I am Ilija Košanin, a fullstack TypeScript engineer working across product, frontend, backend, databases, and practical AI workflows. This is my dead simple corner of the web for notes, experiments, and writing in public.
About
I like straightforward products: fast pages, readable code, good data models, and interfaces that respect the user's time.
My work usually sits between idea and implementation: shaping a feature, building the UI, connecting the backend, and writing down the lessons so other engineers can use them.
Stack
TypeScriptReactNext.jsNode.jsPostgresElysiaTailwind CSSVercelAI products
Writing
All postsChatGPT is a finished app. The GPT API is a way for other apps to use the AI model behind it. That difference matters.