Available from November 2026 · B2B · remote or Kraków

I build AI agents that do real work, on backends that don't fall over.

Senior AI Engineer. 20+ years shipping software in Python, TypeScript and Rust. These days: MCP servers, RAG, multi-agent workflows, and reviewing the code AI writes before it reaches production.

Get my CV [email protected]

GitHub LinkedIn

aifred · watchdog run ● live

▸ wake · every 2h08:00
tool whatsapp.recent_messages14 new
tool gmail.search "recruiter"3 threads
tool brainmd.search_notes12 hits
rank local model (Ollama)1 needs me
Draft reply ready. Send it?waiting for a human

AIfred, my open-source assistant on a local model. It reads, ranks and drafts. It never sends anything without me.

Looking for: AI Engineer: applied LLM, RAG, agents. Senior or Staff.
Stack: Python 15y · TypeScript 15y · Rust 5y
Terms: B2B preferred. Remote, or hybrid in Kraków.
Rate: 250 PLN/h net, B2B
Best interview: Walk through code I actually wrote. The repos are below.

01 · Proof

Things you can open, not just read about.

open source
MCP
RAG · LanceDB
Bun

brain.md

A local-first Markdown knowledge base with a first-class MCP server. 16 tools for Claude Code, Claude Desktop, Cursor or any MCP agent. Semantic search on LanceDB, per-folder permissions, shipped as one Bun binary. I run my own instance every day: it is the memory of my own agents.

Read the code

// tools exposed over MCP
search_notes(query, scope?)
similar_notes(path, k)
context_for_query(question)
get_backlinks(path)
write_note(path, body)  // folder rules apply
+ more

Go · MCP · SQLite · one binary

whatsupd

Your WhatsApp, archived on your own machine and readable by your AI agents. It links as a device like WhatsApp Web, keeps every message, group and call in local SQLite with full-text search, and serves a web client plus an MCP server with 13 tools for Claude and other agents. Read-only by default; sending is a separate opt-in with an allowlist, a rate limit and an audit log. One static Go binary, background service on macOS and Linux.

Read the code

open source · agent · local model

AIfred

A self-hosted assistant on a local Ollama model. It keeps an eye on WhatsApp, Gmail, Calendar and Telegram, and remembers things in brain.md through its MCP server. Cloud fallback stays off unless you turn it on.

Read the code

open source · Rust · 96k+ stars

Bun

Contributor since 2023. Right now: safety refactors in the Zig to Rust rewrite. I replace AI-generated unsafe blocks with safe, idiomatic Rust and check the behaviour against the original test suite.

See my PRs

macOS · menubar app · Homebrew

Browser Router

One click in the menubar decides which browser, or which Chrome profile, every link on your Mac opens in. Optional rules send work links to the work profile. Free and open source.

brew install

Rust · trading · backtesting

botmarley

My crypto trading bot platform with a backtesting engine. The code is private, the documentation is public.

Read the docs

client work · live sites

Websites I built

calakancelaria.pl law practice, 4 sites · built by Lipiński Studio
marvellousminisuk.co.uk painting studio, UK · built by Lipiński Studio
lipinskistudio.pl my website studio for small businesses

02 · How I work with AI

AI writes a lot of code now. My job is knowing when it's right, wrong, or quietly broken.

1
Measure before trustingEval sets, traces and a baseline before a prompt or model change ships.
2
Humans approve outbound actionsAgents read and draft. Sending, paying and deleting wait for a person.
3
Local first when the data is privateOllama, vLLM and llama.cpp on my own hardware, commercial APIs where they earn it.

03 · Experience

20 years, mostly owning things end to end.

2026 · nowFreelanceSenior AI & Backend Engineer

LLM analysis pipelines and agent tooling. July to October: the Rust backend of a DeFi product. Axum API with an OpenAPI spec (utoipa), Pulumi on Azure, moon monorepo CI, and a security review of the swap and signing path.

Lipiński Studio: fixed-price websites for small businesses in Poland, built solo from brief to launch
2023 · 2025LC LabsSoftware Architect

Owned the backend of a mobile fintech app: API contracts, data layer, OAuth2/OIDC with SSO and role-based access, and the integration of an MPC wallet service (DFNS).
2022 · 2023Justt.aiSenior Full Stack Developer

NestJS microservices for an AI chargeback-dispute platform. Payment-platform connectors with retries, idempotency and monitoring, in a multi-team NX monorepo.
2019 · 2022Weber Shandwick (Bomoda)Senior Full Stack Developer

Python sentiment pipelines at scale, built together with data scientists. FastAPI, Airflow, AWS.
2010 · 2018Milenium-ITLead Full Stack Developer

Eight years leading full-stack work in Node.js, Python and React.
2005 · 2015Founder, twiceJobguide.pl, bit-street.com

An early Polish job aggregator, and later a small exchange with a real-time trading engine.

AI and LLM

MCP, RAG, function calling, evals, multi-agent workflows, LangChain, LlamaIndex, Ollama, vLLM, llama.cpp

Languages

Python (FastAPI, Pydantic, asyncio), TypeScript (Node, NestJS, Bun, React), Rust (Axum, Tokio, SQLx)

Data

PostgreSQL, Redis, DuckDB, MongoDB, LanceDB, Qdrant

Infra and security

AWS, Azure with Pulumi, Docker, GitHub Actions, OAuth2/OIDC, RBAC

Education and languages

BSc Computer Science, WSE im. Ks. J. Tischnera (2009). English C1, professional working, Polish native.

04 · CV

Pick the CV that fits the role.

Got an AI role? Let's talk.

[email protected] LinkedIn GitHub