Ilija Košanin
Fullstack software engineer in Belgrade.
TypeScript & AI · remote or Belgrade
Fullstack TypeScript engineer with 4+ years of experience building products end to end. Hands-on experience in AI product development: chat interfaces, streaming, and structured content generation with the Vercel AI SDK and the OpenAI API.
I am a co-organizer of JS Belgrade, the local JavaScript community. We organize meetups, find speakers, handle sponsorships, and bring people together around JavaScript in Belgrade.
I am co-founder of Kosmonaut, a platform and pass for coworking spaces. Part-time, I act in short, fun, and silly videos on social media. I love writing, and I have a full blog section you can check out.
If you have a minute, check out my projects, read a blog post, and please send me your thoughts. I would really love to hear them.
Projects
- Kosmonaut
One coworking pass for Belgrade, usable at any partner space.
- TEA Simulacije
Practice for the oral exam in simulations and modeling.
My girlfriend used the app, I have to brag that she passed and got a 10.
- Pero AI
A simple tool for polishing rough messages before sending them.
- ESGflow
ESG reporting software for turning scattered documentation into structured indicators and reporting narratives.
- Pomiri AI
Two people each tell their side of a misunderstanding; AI writes a neutral summary and next steps.
- Piši AI
An AI writing editor: ask AI to rewrite a selection and review every change as a highlight you accept or reject.
Mr. PlanetMy blog as a platformer. Jump onto a post to read it.
- CV app v1
The first version of this site: a 3D portfolio with animated game characters, built with react-three-fiber.
- The Goat That Wasn't Supposed to Survive
- The System That Makes Us Trust Each Other
- Why Claude sounds like a person, and GPT sounds like an acronym
- AI Integration Lowers the Barrier to Entry for Third Party Services
- What AI Accidentally Revealed About Serbian Culture
- ChatGPT vs GPT API: What Is the Difference?