I build AI systems that execute, not just chat. Local-first. Governed. Hardware-aware. Real.
I design and build CastelOS — a local-first AI execution system that turns tasks into governed runs with real artifacts and evidence. Not another wrapper around an API. A full system: from GPU routing to policy enforcement to domain-specific knowledge packs.
Everything runs on one workstation I assembled myself. No cloud dependencies. No scattered SaaS. Just execution.
The reusable pieces live in their own repos. None of them need CastelOS to be useful.
- awesome-local-ai is a curated list of tools for running models on your own hardware.
- gpu-memory-guard stops one process from taking the whole GPU.
pip install gpu-memory-guard - llm-judge-jury puts several models to a vote on an output instead of trusting one judge.
- qlora-single-gpu-playbook is the set of guards that kept my QLoRA runs alive on a single card.
- merge-quantize-keep-mtp merges two LoRA adapters by rank, then verifies the MTP heads survive GGUF quantization.
