One-day reverse hackathon for developers building with AI. At 16:00, a twist (pivot) and a shift in project assumptions. 16 teams, 20 observers, free EU-based GPUs.
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We are excited to invite you to the second edition of a unique tech hackathon created in cooperation between Codaro Sp. z o.o. and Google Developers Group (GDG) Warsaw, under the patronage of and hosted by Google for Startups Campus Warsaw!
The Codaro Coding Challenge is a one-day hackathon based on a proven and dynamic format:
Pre-event work: Teams build the base of their application at home before the hackathon based on previously announced categories. You arrive with a working MVP product, not just an idea!
Pivot at 16:00 (Twist): Exactly at 16:00, we announce the target audience/niche. Some of the project's initial assumptions cease to be true, and the teams have exactly 3 hours to rebuild the application to meet the new requirements.
Secret Rule: On-site, we will announce an additional, special rule for the event!
Discussion Panels: While the teams are working under time pressure, expert panels from the IT and startup industries will take place on the main stage.
Demo Day & Voting: The day ends with presentations in front of all participants and democratic voting.
Track A – Issue Reporting and Intervention System: Reactive (intake, queuing, assigning contractors, statuses, notifications, field view).
Track B – Resource Reservation and Scheduling: Planning (management of resources and slots, confirmations, cancellations, capacity/occupancy view).
All teams receive free access to Open Source models running on GPUs located in the European Union (code does not leave the secure EU infrastructure).
The use of GPUs is completely optional – you can use any editors and AI assistants (including Cursor, Claude Code, GitHub Copilot, Antigravity, etc.).
Developers / Participants (80 spots / 16 teams of 5 people): You register individually (if you have a team, provide the same name; if you don't – we will assign you before the event).
Observers (20 spots): Seats in front of the stage. Listen to the discussion panels and watch up close as 16 teams build AI-driven products.
Official registration for participants and observers takes place via the form:
👉 Registration at codaro.dev/hackathon
Have questions? Looking for a team? Join the official event Discord server:
Strategic Partner & Host: Google for Startups Campus Warsaw
Co-organizer: Google Developers Group (GDG) Warsaw
Content Partners: Helion, IT Girls, 42 Warsaw, meet.js
Barter Partners: SIP, Legimi
Thursday, August 20, 2026
7:30 AM – 6:30 PM (UTC)
Freelance
Developer + Geek
Organizer
olek.dev
Android Developer
Infastructure `Analysist @Citi
Aibron
Organizer 343
Deloitte
Enterprise Architect | Engineer | Trainer
Codecubica
GDG Organizer
Engineering Manager
J.KOL.SKI
Chief Wizard of GDG Warsaw
Frontend Developer