Hackathon 2026

Agentic
Software
Engineering

2.5 days building the future of development

Date September 18–20, 2026
Format Friday–Sunday
Participants 80 people
Teams 4–6 people
Location Wrocław, Poland
Buy ticket → See tracks
Friday — Ignition
Saturday — Build Day
Sunday — Ship & Show
Track 01: Showcase
Track 02: AI Company
Track 03: Give Open Mercato a Voice
Track 04: Cezar
Agent Orchestration
Agentic Coding 2.0
Sandboxes Building Process
Open Mercato ERP
Claude Code / MCP Servers
Friday — Ignition
Saturday — Build Day
Sunday — Ship & Show
Track 01: Showcase
Track 02: AI Company
Track 03: Give Open Mercato a Voice
Track 04: Cezar
Agent Orchestration
Agentic Coding 2.0
Sandboxes Building Process
Open Mercato ERP
Claude Code / MCP Servers
2.5
Days of intense coding
80
Participants
4
Challenge tracks
∞
Coffee & energy
About the hackathon

Not a weekend hobby.
A testing ground.

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.

open_mercato — zsh
$ claude --agent orchestrator
✓ Agent initialized
→ Loading Open Mercato context...
→ MCP servers: connected (4/4)
✓ Ready to build

$ run --parallel agents
→ Spawning workers...
→ Tasks: distributed
✓ Shipping.

$
Challenges

Choose your track.

Track 01

Showcase

Build something spectacular with Open Mercato — a demo that shows the world what the platform can do.

WOW effect
Track 02

AI Company

Build a digital company powered by agents. An orchestrator splits work across specialized agents — like departments in a real organization — and weaves it into one coherent flow. From brief to finished result, without a human in every loop.

Orchestration
Track 03

Give Open Mercato a Voice

Just say what should happen. Build voice agents that understand speech, take real actions inside Open Mercato and answer out loud — orders, inventory, reports and customer support without touching the keyboard.

Voice AI
Track 04

Cezar

Cezar is our tool for running agents in parallel. Extend it for our community — new integrations, work modes and features that let you fire off dozens of agents at once and wrangle them in one place.

Tooling
Agenda

Three days.
All substance.

Friday — "Ignition"
16:00-17:00
Registration & Networking Coffee, first conversations, setup
Social
17:00-17:30
Keynote Company vision + why Agentic SE — what we want to achieve
Keynote
17:30-18:15
Hackathon start, challenge reveal + team forming 4 tracks, pick your direction
Teams
18:15-19:00
First team brainstorms
Work
19:00-21:00
Dinner + planning Want to code? Code.
Dinner
Saturday — "Build Day"
09:00-09:30
Day Start + Breakfast Casual time to swap notes
Morning
09:30-13:00
Deep work block #1 (3.5h)
Build
10:00-10:30
🎤 Agent Orchestration Agent orchestration patterns — Patryk Lewczuk
Talk
13:00-14:00
Lunch + Midday checkpoint Informal exchange between teams
Lunch
14:00-18:00
Deep work block #2 (4h)
Build
14:00-15:00
🎤 Agentic Coding 2.0 with Piotr Karwatka In parallel — no slides, pure code
Live Code
18:30-19:30
Dinner
Dinner
19:30-21:00
Deep work block #3 Optional evening sprint
Sprint
Sunday — "Ship & Show"
09:00-09:30
Breakfast
Morning
09:30-11:00
Final sprint Wrapping up, polishing, demo prep
Build
11:00-11:30
⛔ Hard stop. Code freeze. Lunch.
Freeze
11:30-12:00
🎤 Sandboxes Building Process Dominik Pałatyński on building isolated environments for agents
Talk
12:15-14:15
Demo time 5 min presentation + 3 min Q&A per team
Demos
14:15-15:00
Jury deliberation + audience vote
Jury
15:00-16:00
Results, prizes, closing Group photo 📸
🏆 Awards
Talks

Parallel to the build.
Your choice.

Saturday, 10:00-10:30

Agent Orchestration

How do you wire many agents into one working system? Orchestration patterns, task splitting, context and cost control — straight from building Open Mercato in an agentic-first way.

Patryk Lewczuk Patryk Lewczuk
Saturday, 14:00-15:00

Agentic Coding 2.0

What has changed since the first wave of agentic coding? New tools, new habits and a real impact on how fast you ship. Live, no slides — pure code and real-time interaction with agents.

Piotr Karwatka Piotr Karwatka
Sunday, 11:30-12:00

Sandboxes Building Process

How we build safe, isolated environments (sandboxes) where agents can operate without risk. Architecture, pitfalls and lessons from a production rollout.

Dominik Pałatyński Dominik Pałatyński
Prizes

Winners across all
categories.

Track 01
Best Demo
The demo that shows Open Mercato to the world

Rewards

  • AI Tech Leaders course access for every team member
Track 02
Best AI Company
The best agent system that runs like a company

Rewards

  • A webinar with Open Mercato and a live showcase of the winning project
Track 03
Best Voice Agent
The most polished voice agent for Open Mercato

Rewards

  • To be decided
Track 04
Best Cezar Contribution
The most valuable contribution to Cezar

Rewards

  • 3 months of free Open Mercato Sandbox access for every team member
Cross-Track
People's Choice
Voted by all participants

Rewards

  • Open Mercato hoodies and mugs for the whole team
Partners

Backed by.

Concordia Design

Concordia Design is a creative space and conference hub on Słodowa Island in Wrocław. They are hosting us for the hackathon — rooms, collaboration zones and a meeting place for the agentic community.

Venue partner Concordia Design, Wrocław
concordiadesign.pl →
AI Tech Leaders

AI Tech Leaders is a 5-week online program that teaches technical teams to build large projects with AI agents - from frameworks and specs, through workflows and task delegation, to quality assurance. They provide course access for every member of the winning Showcase team.

Track patron Showcase
aitechleaders.pl →
Preparation

What to bring.

Required
→ Laptop with configured dev environment
→ GitHub account
→ Installed tools (instructions sent before event)
→ Open mind for working with agents
We provide
→ WiFi for 80 people hammering LLMs
→ Mentors circulating between teams
→ Meals: Friday–Sunday
→ Coffee & energy drinks — non-stop
→ Concordia Design space on Słodowa Island
Location

Where to find us.

Venue

Concordia Design Wrocław

Wyspa Słodowa 7

50-266 Wrocław, Poland

Concordia Design is a creative space and event hub on Słodowa Island, in the heart of Wrocław. A historic building overlooking the Odra river, with workshop rooms and collaboration zones — the perfect place for 2.5 days of intense coding with agents.

Contact

Organizers.

Patryk Lewczuk

Patryk Lewczuk

Core Contributor
patryk@openmercato.com
Maciej Greń

Maciej Greń

Partnership Manager
mat@openmercato.com
Tickets

Reserve your spot.

Early Bird tickets are sold out. Regular tickets are on sale now — fewer than 50 spots left for the event!

Early Bird

649 PLN

For those who don't wait until the last minute. Full hackathon access, all meals and drinks. Only 30 tickets in this pool — once they sell out, the Regular price applies. Early Bird price valid July 20 – August 2.

Included

  • Meals (Friday–Sunday)
  • Coffee, drinks & snacks non-stop
  • Lectures and workshops
  • WiFi access

Not included

  • Accommodation
Sold out

Regular

899 PLN

The full hackathon package — 2.5 days of coding, talks, catering, networking and a shot at the prizes. Price valid from July 20.

Included

  • Meals (Friday–Sunday)
  • Coffee, drinks & snacks non-stop
  • Lectures and workshops
  • WiFi access

Not included

  • Accommodation
Sales are live! Buy ticket →
FAQ

Frequently asked questions.

01 Can I come alone, without a team? +

Yes! Teams form on Friday evening. You can come solo — we will help you find a group that matches your level and interests.

02 What experience level is required? +

The hackathon is aimed at developers of various levels. You should be able to write code, but you don't need experience with AI tools. We provide onboarding and mentors to help you get started.

03 What is Open Mercato? +

Open Mercato is an open-source ERP built in an agentic-first way. During the hackathon you will work with the platform's code — building agents, voice tools or spectacular demos.

04 Is accommodation provided? +

We do not provide accommodation. The event takes place in Wrocław, at Concordia Design on Słodowa Island — we recommend booking a hotel or Airbnb nearby. The hackathon runs from Friday 4:00 PM to Sunday 4:00 PM.

05 What language is the hackathon in? +

The hackathon is held in Polish. Talks and materials are in Polish, but code and technical documentation may be in English.

06 What should I bring? +

A laptop with a configured dev environment, a GitHub account and an open mind. Before the event we will send instructions with a list of tools to install. Food and coffee are on us.

07 Can I work on my own idea? +

Projects must relate to one of the four tracks (Showcase, AI Company, Give Open Mercato a Voice, Cezar) and to Open Mercato. Within a track you have full creative freedom.

08 How are projects judged and rewarded? +

The jury evaluates projects during the Sunday demos. Each track has its own prize, plus a cross-track People's Choice award.

Sign up

Build with agents.
Push the limits.

Join 80 developers who will spend 2.5 days discovering how far you can go with AI as a full team member.

Buy ticket → Contact organizers