AI systems • simulations • applied reasoning

I work on systems where models, data, and people interact.

Most of my time goes into:

• building AI-driven simulations
• designing evaluation and feedback loops
• turning vague problems into executable systems

I’m less interested in tools as identities,
more interested in how things behave under constraints.

• LLM-based simulation and evaluation systems
• AI microservices used inside real products
• Analytics and signal extraction from messy user behavior
• Product decisions under uncertainty

I care about leverage, not polish.

• Email: umut.keltek@gmail.com
• Twitter: https://twitter.com/umutkeltek
• LinkedIn: https://linkedin.com/in/umutkeltek
• Kaggle: https://kaggle.com/umutkeltek

Python, Node.js, PostgreSQL, LLM APIs, evaluation pipelines,
plus whatever else the problem forces me to learn.