Lyubomir Stoykov

Previously Staff Engineer at Yelp.
Currently exploring local AI: model internals, runtimes, self-hosting and tradeoffs vs cloud.

What I'm working on

01

Build

Products in the works

02

Share

What I'm learning about local AI: internals, benchmarks, deployments, tradeoffs.

Latest writing

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Local AI

The Lifecycle of a Local AI Model: A Beginner's Map

A beginner's map to Hugging Face, Transformers, PyTorch, GGUF, safetensors, Ollama, LM Studio, Unsloth, MLX, vLLM, SGLang, and the rest of the vocabulary.

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About me

I grew up in Bulgaria, left home at 14 for a math high school, and moved to Germany at 19. I studied Computer Science at TU Munich and graduated with M.Sc (Distinction). After that I joined Yelp in Hamburg and worked on Ads for six years, going from Software Engineer to Staff Software Engineer. I took a sabbatical in mid‑2025, moved back to Bulgaria, and started working independently in 2026.

Full timeline
  1. 2026 →

    Independent

    Building products, content, and selective consulting

  2. 2025 – 2026

    Sabbatical

    Moved back to Bulgaria

  3. 2024 – 2025

    Staff Software Engineer

    Yelp · Ads · Hamburg

  4. 2021 – 2024

    Senior Software Engineer

    Yelp · Ads · Hamburg

  5. 2019 – 2021

    Software Engineer

    Yelp · Ads · Hamburg

  6. 2018 – 2019

    Software Engineer

    UnternehmerTUM · Digital Product School

  7. 2012 – 2018

    BSc & MSc, Computer Science (Distinction)

    TU Munich · Thesis presented at the Middleware Conference, Las Vegas