# Tobias Sterbak

> Freelance AI & Machine Learning Engineer based in Berlin, Germany. I design and build production AI systems — from ML and NLP applications to generative AI and private/local LLM infrastructure. 10+ years of ML & NLP experience, shipping prototype to production since 2016.

What I do:

- **Build the AI product** — Custom ML/AI applications, APIs and product integration (PyTorch, scikit-learn, FastMCP, Unsloth, Pandas).
- **Make it reliable** — Evaluation, monitoring, reproducibility and deployment (MLflow, LangFuse, vLLM, AWS, llama.cpp).
- **Work with language** — Search, extraction, classification, assistants and text generation (Transformers, LangChain, pgvector, spaCy, LLMs, LanceDB).
- **Build what surrounds the model** — Backends, databases, pipelines and infrastructure (PostgreSQL, Redis, FastAPI, Docker, Linux).
- **Local & private AI** — On-prem LLM inference, private RAG, fine-tuning and self-hosted infrastructure.

Markdown versions of the site's pages are available under `/_markdown/`. The regular HTML site for people is at https://tobiassterbak.com/.

## Pages

- [Homepage (Markdown)](https://tobiassterbak.com/_markdown/index.md): Overview of services, experience, projects, and contact details
- [Local AI (Markdown)](https://tobiassterbak.com/_markdown/local-ai.md): Local and private AI services — on-prem LLM inference, private RAG, fine-tuning, self-hosted infrastructure

## Projects

- [PromptMage](https://promptmage.io): Open-source Python framework for multi-step LLM applications
- [Biaslyze](https://biaslyze.org): Open-source toolkit for identifying bias in NLP models
- [OpenAndroidInstaller](https://openandroidinstaller.org): Open-source graphical installer for alternative Android distributions

## Writing

- [Depends on the Definition](https://depends-on-the-definition.com): Long-form technical articles on causal inference, Shapley values/XAI, NLP, and transformers

## Contact

- [Email](mailto:hello@tobiassterbak.com): hello@tobiassterbak.com

## Optional

- [GitHub](https://github.com/tsterbak): Open-source repositories
- [LinkedIn](https://linkedin.com/in/tobias-sterbak): Professional profile