Listing Hackathons

Time to Accelerate European Defense Innovation. Join us and 200+ hackers from all across Europe and beyond for the European Defense Tech Hackathon on November 6 – 9, 2025, in Kyiv, Ukraine. Goal We want to bridge the gaps between technologists, the public sector, investors, and operators in dual-use and defense technology. This hackathon will demonstrate the talent and drive of the European ecosystem. Get inspired by the challenges we have prepared, or feel free to bring your own project. You'll get feedback from folks who have been on the frontline to ensure you're solving real problems.

In this challenge, participants are invited to form teams of 2-4 members to build solutions using Hugging Face LeRobot. The goal is to develop a LeRobot application which can help solve real-world problems demonstrating technical proves, creativity and usability.

The Global Sustainability Challenge is an unparalleled opportunity for students to harness their talents for building a more sustainable future. Design, implement, and test your most creative solutions in the real world.

In this hybrid hackathon powered by Arc, developers will build the next generation of payment systems using AI + Arc with USDC. Explore a world where AI agents can understand natural language, automate financial actions, and move money with precision. From DeFi to digital content and real-world assets, this is your chance to shape the future of intelligent finance. 📅 October 27 – November 9, 2025 • Oct 27 – Nov 8 (Online Phase) – Collaborate and build with developers and AI innovators from around the world. All projects must be submitted by end of day on November 8. • Nov 8 (New York City – On-site Build Day) – Selected participants will be invited to an exclusive in-person session to refine their projects and connect directly. • Nov 9 (New York City – Live pitching & Awards) – Live pitching sessions to a panel of judges and investors, followed by the official winner announcement. 📍 On-site Venue (Nov 8–9): Babe Ruth Room, Jay Conference Chelsea 159 West 25th Street, New York City, USA 🧠 Get guidance from blockchain and AI experts throughout the event. 🤝 Go solo or team up — it's your flow. 🏆Compete for $10,000 in USDC prizes. 📍 On-site participation is by invitation only. Travel and accommodation expenses will not be covered. 🧑🏻‍💻 Secure your spot now — sign up before the Kick-Off Stream!

Innovative anti-fiber optic drone solutions that integrate with Kaizen’s Drone Sentinel acoustic detection system via LoRaWan mesh networks (Meshtastic protocol). Build smart counter-UAV systems triggered by acoustic drone detection.

Europe is at a turning point: The need for faster, bolder defense innovation has never been greater. Our Defense against Drones Drone alerts are rising across Europe, and one of our most essential freedoms — the freedom to travel — is under threat. What could be effective against threats from the sky? Can we detect drones better? How can we defend ourselves?

First ever Ethereum hackathon in Central Asia

The Hackathon for builders by builders. Rome, 17-19 October, Privacy, AI and DeFi tracks.

Europe’s first-ever Space Cybersecurity Hackathon, uniting top space institutions, cybersecurity and telecom experts, satellite engineers, ethical hackers, and trailblazing startups to tackle the toughest challenges in satellite security — and build practical software solutions within 24 hours — to protect Europe’s satellites, GPS, and telecom networks from cyberattacks, fortifying defenses in space and on Earth. When: October 17-18, 2025 Where: Madrid Digitaliza (calle Embajadores, 181, Madrid, Spain) For whom: Satellite engineers looking to apply their technical expertise to real-world cybersecurity threats.

Europe’s first-ever Space Cybersecurity Hackathon, uniting top space institutions, cybersecurity and telecom experts, satellite engineers, ethical hackers, and trailblazing startups to tackle the toughest challenges in satellite security — and build practical software solutions within 24 hours — to protect Europe’s satellites, GPS, and telecom networks from cyberattacks, fortifying defenses in space and on Earth.

Time to Accelerate European Defense Innovation! Join us and 100+ hackers from all across Europe and beyond for the European Defense Tech Hackathon in Hamburg in mid-October 2025! Goal We want to bridge the gaps between technologists, the public sector, investors, and operators in dual-use and defense technology. This hackathon will demonstrate the talent and drive of the European ecosystem. Get inspired by the challenges we have prepared, or feel free to bring your own project. You'll get feedback from folks who have been on the frontline to ensure you're solving real problems.

Team up with experts from DiGOS and TU Berlin at the Alfred-Wegener Institute to develop /fresh ideas and open source code using real laser ranging data from ESA's Izaña station on Teneriffe. Optimize your algorithms and verify your predictions, contributing to a safer and more sustainable space environment. 🔷 use real data from the Izaña-1 Laserstation in Teneriffe to determine orbit information of objects in space 🔷 in a team of up to four people determine together the orbit of real satellites 🛰️ 🔷 optimize your algorithms and detect unknown space debris! 🔷 get to know new people who want to keep our earth and its surroundings as clean as you! ✨

The NASA International Space Apps Challenge is a hackathon for coders, scientists, designers, storytellers, makers, builders, technologists, and innovators around the world to come together and use open data from NASA and its Space Agency Partners to create solutions to challenges we face on Earth and in space.

Time to Accelerate European Defense Innovation Join us and 100+ hackers from all across Europe and beyond for the European Defense Tech Hackathon on October 3-5, 2025, in Milan, Italy. Goal We want to bridge the gaps between technologists, the public sector, investors, and operators in dual-use and defense technology. This hackathon will demonstrate the talent and drive of the European ecosystem. Get inspired by the challenges we have prepared, or feel free to bring your own project. You'll get feedback from folks who have been on the frontline to ensure you're solving real problems.

Solve challenges in cybersecurity and unmanned systems. Get mentored by defence professionals.

Time to Accelerate Defense Innovation in Europe! Join us and 200+ hackers from across Europe and beyond for the European Defense Tech Hackathon, taking place on September 25–28, 2025, in London, UK—right before the Resilience Conference and as part of London Defence Tech Week. Connect with fellow defense innovators, meet potential co-founders, and build projects with real-world impact that could save lives. We’ll bring challenges rooted in pressing defense and security problems, and you’re welcome to bring your own ideas. Throughout the event, you’ll get hands-on guidance from seasoned mentors—and after the hackathon, we’ll help you take your project closer to real-world deployment 🚀

Defense Hack Day is an intense one-day event where builders, engineers, and problem-solvers take on real-world security and defense challenges—from counter-drone systems to demining technologies. Think of it as a mini-hackathon: a focused briefing in the morning, a full day of hacking, and a high-energy pitch competition to close it out.

We will share updates on the event schedule, challenges etc. by the 04.09. so stay posted and apply for the event <3 You can apply as teams (up to 5) or as individuals.

Join the Internet of Agents Hackathon to build real-world, rentable agents using Coral Protocol and Solana-powered payments. 📅 September 14–21, 2025 Sept 14–21: Build online with global innovators. Submit projects by the deadline. Sept 20 (NYC): On-site build day at Solana Skyline (invitation only). Sept 21 (NYC): Live pitches, networking, and winner announcements. 🧠 Mentorship from experts and Coral specialists throughout. 🤝 Participate solo or in teams. 📍 Travel and accommodation not covered. 🚀 Sign up now to secure your spot before the Kick-Off Stream!

HackMIT 2025 is a 24-hour hackathon at MIT in Cambridge, Massachusetts.

Join us at MuniHac, Munich's yearly Haskell gathering! For three days, Haskell folks from all over meet up to code, learn, and hang out. New to Haskell or been at it for years? Doesn't matter - we've got workshops, talks, and projects for everyone. It's a great chance to learn and meet the enthusiastic Haskell community!

Join us for the next edition of ETHWarsaw - where builders meet to create the future of Ethereum.

Design, IoT, Music/Art

Signal Intelligence. Combat First Aid. Maritime Dominance. Join us and 100+ hackers from across Europe and beyond for the European Defense Tech Hackathon on Aug 29-31, 2025, in Copenhagen, Denmark. Connect with fellow defense innovators, meet potential co-founders, and work on projects that have the potential to save lives! We'll prepare challenges based on real-world problems, and you can bring your own project. You'll get feedback from experienced mentors, and we'll put you in a position to deploy your project in the real world after the hackathon 🚀 More information on our event website: https://eurodefense.tech/hackathons/copenhagen-2025/

A short hackathon and meetup for Cursor community in Germany. More info coming soon!

PNL 36,500 of cash prizes, mentorship from Huawei in Poland, internship opportunities, and many more! AI Innovation

EUR 22,000 of total cash prizes, Internship opportunities, and many more! Light Chaser (Optical Networks) or Future Network (Data Communications)

🕒 6 days to explore the full potential of GPT-5 💡 Build next-gen AI apps 🤝 Compete solo or form a dream team 🚀 Connect with global innovators 🧑🏻‍💻 Sign up before the Kick-Off Stream to secure your spot!

Push the boundaries of privacy, security, and censorship resistance with cutting-edge technologies.

Europe's most spontaneous hackathon