# Bartłomiej Szczygło

> I build infrastructure for autonomous AI agents — solo. Bartłomiej Szczygło builds infrastructure for autonomous AI agents: persistent agent desks, secretless access to real accounts, browser and CLI control, and guardrails that survive prompt injection. Deep technical writing on the parts of agent systems that break outside the demo.

Bartłomiej Szczygło (Bartlomiej Szczyglo) is an AI engineer and solo founder based in Warsaw, Poland. He builds ARP (Agentic Runtime Platform) and writes about agent infrastructure, LLM operations and agent security. All content is in English and free to quote with attribution to https://bszczyglo-landing.vercel.app/.

## Pages

- [Home](https://bszczyglo-landing.vercel.app/): positioning and featured Deep Dives.
- [Writing](https://bszczyglo-landing.vercel.app/blog): all posts, filterable by format and topic.
- [Products](https://bszczyglo-landing.vercel.app/products): products designed and shipped by Bartłomiej Szczygło.
- [About](https://bszczyglo-landing.vercel.app/about): background, capabilities and history.
- [Talks](https://bszczyglo-landing.vercel.app/talks): speaking appearances.
- [Contact](https://bszczyglo-landing.vercel.app/contact): how to work with him.

## Topics

- [Agent Infrastructure](https://bszczyglo-landing.vercel.app/blog/pillar/agent-infrastructure): The runtime an autonomous agent actually needs: persistent desks, browsers, shells, orchestration, recovery.
- [Context & Tool Engineering](https://bszczyglo-landing.vercel.app/blog/pillar/context-and-tooling): Context windows, tool design, structured output and streaming UI — the interface between a model and real work.
- [LLM Ops](https://bszczyglo-landing.vercel.app/blog/pillar/llm-ops): Routing, fallback engines, local models, cost control, evaluation and the boring plumbing that keeps inference up.
- [Agent Security](https://bszczyglo-landing.vercel.app/blog/pillar/agent-security): Prompt injection, fail-closed guardrails, untrusted content and keeping secrets out of a model's reach.
- [Agents Meet Business](https://bszczyglo-landing.vercel.app/blog/pillar/agents-meet-business): Adoption, process design and ROI — what happens when agents touch a real company instead of a benchmark.

## Deep Dives

- [The dumb orchestrator: keep the control loop out of the model](https://bszczyglo-landing.vercel.app/blog/dumb-orchestrator) (Deep Dive, 2026-07-22): Most multi-agent systems fail because the control flow itself is generated by a language model. Invert it: a deterministic orchestrator that only routes, retries and times out, with all judgement pushed to the leaves where it can be observed and replaced. Raw markdown: https://bszczyglo-landing.vercel.app/blog/dumb-orchestrator.md
- [Persistent desks: stop making your agent start from zero](https://bszczyglo-landing.vercel.app/blog/persistent-desks) (Deep Dive, 2026-07-15): A stateless agent re-clones the repo, re-installs the dependencies and re-derives the same conclusions on every run. Giving it a durable workspace — a desk that survives the session — removes more failure modes than a bigger context window ever will. Raw markdown: https://bszczyglo-landing.vercel.app/blog/persistent-desks.md
- [Secretless agents: real accounts without real passwords](https://bszczyglo-landing.vercel.app/blog/secretless-agents) (Deep Dive, 2026-07-08): An agent that uses your GitHub, inbox and cloud console does not need to know a single credential. Put a broker between the agent and the account: the agent states intent, the broker holds the secret, and the key never enters the model's context. Raw markdown: https://bszczyglo-landing.vercel.app/blog/secretless-agents.md

## Field Notes

- [Everyone is demoing agents. Almost nobody is running them.](https://bszczyglo-landing.vercel.app/blog/demo-to-production-gap) (Field Note, 2026-07-24): Notes from a season of AI meetups in Warsaw: the demos got dramatically better while the number of agents actually running unattended in a business barely moved. The gap is not model quality — it is everything around the model. Raw markdown: https://bszczyglo-landing.vercel.app/blog/demo-to-production-gap.md

## Products

- ARP (Building): An orchestration platform that gives AI agents a real runtime instead of a chat box: persistent desks, credentials they can use but never read, and a browser, shell and API they can drive on their own.
- LegalnyDeweloper (Live): B2B SaaS that automates the daily price-disclosure duty Polish housing developers received in July 2025 — a legal obligation with penalties up to 10% of annual turnover, turned into a background job.
- KayakBooking & KayakSystem (Live): A booking portal aggregating 200+ kayak routes from 40+ rental companies across 15 Polish provinces, plus the management system the rental companies themselves run on.
- SuperLango (Live): A language-learning platform where multi-agent pipelines generate and adapt lesson material in real time, sold B2B and B2B2C to language schools and tutors.
- Chatino.ai (Paused): Chatbot platform for e-commerce, where I served as CTO — custom assistants, LLM-driven process automation and the integration work around them.

## Profiles

- LinkedIn: https://www.linkedin.com/in/bszczyglo/
- X: https://x.com/bszczyglo
- YouTube: https://www.youtube.com/@bszczyglo
- Instagram: https://www.instagram.com/bszczyglo/
- TikTok: https://www.tiktok.com/@bszczyglo

## Full text

- [All posts as a single markdown file](https://bszczyglo-landing.vercel.app/llms-full.txt)
- [RSS feed](https://bszczyglo-landing.vercel.app/rss.xml)