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Building new things!
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Building new things!
46 followers · 54 following

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Achievement: Pair Extraordinairex4Achievement: YOLOAchievement: Pull Sharkx3Achievement: QuickdrawAchievement: Arctic Code Vault Contributor

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johnnichev/README.md

John Nichev

Founder of NichevLabs. Creator of Selectools - an open-source Python framework for production AI agents with built-in guardrails, audit logging, and cost tracking.

Senior ML Engineer - 10+ years building scalable software and ML-powered systems across startups and enterprise.

What I Work On

  • AI Agent Infrastructure — tool calling, guardrails, prompt injection defense, execution traces, multi-provider orchestration
  • RAG & Search — hybrid BM25 + vector search, semantic chunking, cross-encoder reranking
  • Full-Stack Engineering — React, Next.js, Node.js, TypeScript, Python, FastAPI
  • Data & ML Pipelines — PyTorch, recommendation engines, analytics pipelines
  • Cloud & Infra — AWS, GCP, Docker, Kubernetes

Open Source

  • Selectools — Production-ready AI agents with tool calling, RAG, and hybrid search. 5 LLM providers, 146 models, 1620 tests.

Pinned Loading

  1. selectools selectools Public

    Production-ready Python framework for AI agents with built-in guardrails, audit logging, cost tracking, and hybrid RAG. Supports OpenAI, Anthropic, Gemini, Ollama. By NichevLabs.

    Python 6

  2. text-extraction-tool text-extraction-tool Public

    TypeScript 1

  3. content-to-topic-matching content-to-topic-matching Public

    Python 1

  4. harry-potter-q-a-rag-system harry-potter-q-a-rag-system Public

    Python 1

  5. Better-LigaMagicCSV-from-DelverLens Better-LigaMagicCSV-from-DelverLens Public

    Python 1

  6. GAMBETTOCHESS-API GAMBETTOCHESS-API Public

    API for organizing multiplayer chess games

    TypeScript 1