Hackathon 2026
Agentic
Software
Engineering
2.5 days building the future of development
powered by
Codex 2.5 days building the future of development
powered by Codex We are a product company that builds software powered by Agentic Software Engineering. This hackathon is where we collectively discover how far you can go when AI agents become full members of the development team.
Build with agents. Push the limits. Share your insights.
Mixed teams welcome — devs, PMs, designers, testers. Every perspective brings something different to working with agents.
Build skills, tools and workflows that genuinely improve daily work with AI agents.
ProductivityBugs, tests, documentation — every meaningful contribution earns points on the live leaderboard.
| Critical bug fix | 10 pts |
| Regular bug fix | 5 pts |
| New / improved test | 3 pts |
| Documentation fix | 2 pts |
| Minor fix | 1 pt |
Build something spectacular with Open Mercato — a demo that shows the world what the platform can do.
WOW FactorTake a real air & ocean logistics problem and build a working solution for it in Open Mercato.
Logistics
A quick introduction to Codex — OpenAI's autonomous software engineering agent. What it is, how it works, and how participants can use API tokens during the hackathon.
Mike Grabowski How Agentic SE changes daily work at a software house. An honest conversation about where the hype ends and real change begins. Estimates, roles, code review — with concrete examples.
Tomasz Karwatka Building live with AI agents — from zero to a working solution. No slides, no bullet points, pure code and real-time interaction with agentic tools. 60 minutes.
Piotr Karwatka An honest retrospective on building open-source ERP with an agentic-first approach. What works, what doesn't — context, costs, rate limits.
Patryk Lewczuk 
A technology agency from the Open Mercato core team, specializing in operating systems for intercontinental logistics. Builds platforms for freight forwarders, customs agencies, transport companies, and intermodal operators — with automation built into the core, not bolted on as an afterthought. Every system is owned by the client from day one.
One of Poland's largest fintech companies, a leader in electronic payments and transport systems. They provide us with extra space at their Sopot office for the hackathon.
Codex is an autonomous software engineering agent by OpenAI that writes code, fixes bugs, and answers questions about codebases — all in a sandboxed cloud environment. OpenAI provides a set of Codex API tokens for every hackathon participant.
ul. Powstańców Warszawy 6
81-718 Sopot, Poland
Autopay — one of Poland's largest fintech companies, a leader in electronic payments and transport systems. They are hosting us at their headquarters in Sopot.
Yes! We form teams on Friday evening. You can come solo — we'll help you find a group that matches your skill level and interests.
The hackathon is aimed at developers of various levels. You should be able to write code, but no prior experience with AI tools is needed. We provide onboarding and mentors to help you get started.
Open Mercato is an open-source ERP system built with an agentic-first approach. During the hackathon you'll work with the platform's codebase — building skills, fixing bugs, or creating demos.
We do not provide accommodation. The event takes place in Sopot — we recommend booking a hotel or Airbnb nearby. The hackathon runs from Friday 4:00 PM to Sunday 4:00 PM.
The hackathon is conducted in Polish. Talks and materials are in Polish, but code and technical documentation may be in English.
A laptop with a configured dev environment, a GitHub account, and an open mind. Before the event we'll send setup instructions with a list of tools to install. Food and coffee are provided. Codex API tokens from OpenAI are provided for every participant.
Projects must be related to one of the four tracks (Skills & Agentic Flow, Bounty Hunting, Showcase, Open Logistiko) and involve Open Mercato. Within your track you have full creative freedom.
A jury evaluates projects during the Sunday demos. Each track has its own prize, plus there is a cross-track People's Choice award. Bounty Hunting has a separate leaderboard with points for contributions.
Join 50–70 developers who will spend 2.5 days discovering how far you can go with AI as a full team member.
