September 19–21, 2025 | In-person Only
305 Hack Fall 2025 is Miami's signature hackathon, officially part of the Major League Hacking (MLH) 2026 Season and a flagship event of the Hack University Initiative.
This year marks a milestone: 305 Hack is officially hosted by the Google Developer Group (GDG) at FIU, alongside Code Crunch Global, Raspberry Pi Code Crunch, and CAHSI @ FIU.
Over three days, learners, developers, designers, and entrepreneurs will come together to build transformative projects for the cities of tomorrow — with access to mentorship, workshops, certifications, and global recognition while competing across four smart city innovation tracks.
How would you like to contribute to building the cities of tomorrow?
🌍 Worldwide All Universities | All Majors | Age 16+
Exception: If you are under 18, you may join but must have parent or guardian permission and they must be around during the event.
Join as a participant to build innovative smart city solutions, collaborate with interdisciplinary teams, learn cutting-edge technologies, and compete for prizes. Perfect for learners from all majors who want to shape urban futures.
Join our 305 hackathon Fall 2025! Whether you're an industry leader, learner, fundraiser, or sponsor, your support drives innovation for tomorrow's cities.
The 305 Hackathon Fall 2025 focuses on Smart City Innovation — creating intelligent, sustainable, and connected urban solutions. Organized by Code Crunch, ColorStack at FIU, and CAHSI at FIU, we're bringing together diverse minds to tackle real urban challenges.
From IoT sensors and AI-powered traffic systems to sustainable infrastructure and digital governance platforms, participants will develop cutting-edge solutions that could revolutionize how we live, work, and interact in cities.
Choose your track to build the future of urban living! 🌆
Each track features unique urban innovation challenges that will be revealed when the hackathon begins on September 19, 2025 at 11:00 PM.
Build solutions for tomorrow's cities under pressure! ⏱️🌆
Every participant who checks in at 305 Hackathon — Fall 2025 can claim $100 in Neon credits (courtesy of Neon). Redeem at the check-in desk during the 6:00–7:00 PM window. One redemption per attendee.
Instant provisioning (≈300ms), branching, point-in-time recovery
Serverless driver for ultra-fast queries over HTTP
Works with Next.js, Prisma, Drizzle, Python, Go, Rust, Ruby, and more
Every participant who checks in at 305 Hackathon — Fall 2025 can claim $50 in Agentuity credits (courtesy of Agentuity). Redeem at the check-in desk during the 6:00–7:00 PM window. One redemption per attendee.
Purpose-built for autonomous agents with intelligent resource allocation
Auto-scale your AI agents based on demand and workload patterns
Built-in support for LLMs, vector databases, and agent orchestration
$500 in Agentuity credits for the best team that integrates Agentuity into their project.
🛠️ Workshop: Hack AI Agents — Friday, September 19, 2025 at 10:00 PM, The HUB at Office Logic, Downtown Miami.
Building the physical and digital backbone of smart cities through innovative engineering solutions
$500Hextronics.com
🚁 Exclusive: Hextronics will provide their drone base station on-site to capture aerial videos for training computer vision algorithms. Teams will also have access to their API for controlling the drone.
Infrastructure Challenge: Unlocks September 19
Creating intelligent digital experiences and platforms that connect citizens with their smart cities
Digital Platform Challenge: Unlocks September 19
No Code Required! Business strategies, urban planning concepts, and entrepreneurial solutions for smart city challenges
Business Innovation Challenge: Unlocks September 19
Advanced security solutions for smart city infrastructure, blockchain applications, and next-gen urban protection
Security Challenge: Unlocks September 19 — Extra prizes!
Hackers can enroll to participate by competing in one of these challenges and using new APIs.
Take a creative break from coding! Join us for a relaxing digital art session inspired by the legendary Bob Ross, and play !Light. Let your creativity flow!
Perfect for unwinding between coding sessions ✨
Collect these exclusive MLH pins as a badge of honor! 🎖️
(Click image to enlarge)
For more details visit MLH Prizes at 305 HACKATHON | FALL EDITION
It's time to push the boundaries of what's possible with AI using Google Gemini. Check out the Gemini API to build AI-powered apps that make your friends say WHOA. So, what can Gemini do for your hackathon project?
Think of the possibilities… what will you build with the Google Gemini API this weekend?
MongoDB Atlas takes the leading modern database and makes it accessible in the cloud! Get started with a $50 credit for learners or sign up for the Atlas free forever tier (no credit card required).
Along with a suite of services and functionalities, you'll have everything you need to manage all of your data, and you can get a headstart with free resources from MongoDB University!
Build a hack using MongoDB Atlas for a chance to win a M5GO IoT Starter Kit for you and each member of your team.
Auth0 wants your applications to be secure! Why spend hours building features like social sign-in, Multi-Factor Authentication, and passwordless log-in when you can enable them through Auth0 straight out of the box?
Auth0 is free to try, doesn't require a credit card, and allows for up to 7,000 free active users and unlimited log-ins. Make your new account today and use any of the Auth0 APIs for a chance to win a pair of wireless headphones for you and each member of your team!
Cloudflare is one of the world's largest networks enabling hackers like you to build, deploy, and deliver trusted applications, no matter where you are! With Cloudflare, you'll have all the building blocks to create a full-stack application; from C3 (create Cloudflare command line) instance deployment to object storage.
You can even run GenAI (LLMs, text to image, Voice to text etc..) in the cloud and leverage your AI functionality via API requests using Cloudflare's Workers AI! Enjoy Cloudflare's generous free tier to get started at no cost!
This weekend, we want you to build an AI Application utilizing Cloudflare's numerous services for a chance to win Arduino Kits for you and your team!
A timeline of our hackathons building towards smart city solutions.
Our signature spring virtual hackathon introduced foundational tech concepts, bringing together innovators from across South Florida with focus on AI, fintech, and web technologies — laying groundwork for smart city innovation.
A vibrant hybrid hackathon in Miami emphasizing interdisciplinary collaboration across sustainability, health tech, and cybersecurity — key components for smart city infrastructure.
A virtual hackathon connecting learners and industry experts through technical challenges and mentorship, advancing skills needed for complex urban technology solutions.
An intensive virtual summer hackathon focusing on beginner-friendly tracks, mobile app development, and cloud solutions — building the technical foundation for smart city applications.
Fall edition of our popular 305 Hack series, focusing on advanced web development, IoT solutions, and data analytics — essential technologies for smart city ecosystems.
A dedicated hackathon celebrating women in tech, promoting diversity and inclusion in the development of innovative solutions for social impact and urban challenges.
Year-end celebration hackathon bringing together all our community members for a grand finale of innovation, featuring advanced challenges in machine learning and blockchain technology.
The evolved version of our flagship event, featuring week-long intensive workshops, industry partnerships, and cutting-edge smart city challenges with real-world implementation opportunities.
Next generation of our 305 Hack series, incorporating lessons learned from previous events and focusing on emerging technologies like quantum computing and advanced AI systems.
Watch highlights from our 305 Hack Spring 2025 event powered by Cardano!
Hack University 2025
305 Spring Hackathon 2025
Hack University 2025
Participate in the 305 Hackathon Fall as a hacker, volunteer, supporter, or sponsor
Fill out our registration form with your details and smart city project ideas. Registration is free and open to all university learners interested in urban innovation and technology.
Participate solo or with a team of up to 4 members from diverse backgrounds. No team? Join our team formation events or use Discord to find teammates with complementary skills!
Join the opening ceremony where we'll reveal the smart city challenges, provide urban innovation insights, and share all resources you need to start building.
Develop your smart city solution within the timeframe, attend tech workshops, connect with industry mentors, and submit your project to help shape the future of cities.
Activities and resources available throughout the 305 Hackathon Fall 2025
Learn from industry experts through technical workshops, tech talks, and skill-building sessions throughout the event.
Access presentation slides, code examples, and technical resources shared by mentors and industry partners for your projects.
Connect with fellow urban innovators, smart city professionals, tech industry leaders, and potential co-founders through structured networking sessions.
Take a break from coding with our smart city trivia and mini-challenges to refresh your mind while learning about urban innovation trends.
Participate in our sticker exchange featuring smart city themes, tech companies, and urban innovation logos from sponsors and fellow hackers.
Enjoy complimentary meals, snacks, and refreshments throughout the event to keep you energized while building the future of cities. Note: Availability is TBD and will be confirmed during the event kickoff, depending on the hackathon format.
Designated quiet spaces with basic sleeping accommodations for participants who need to recharge during the intensive smart city building sessions.
Access IoT sensors, Arduino kits, Raspberry Pis, and smart city simulation hardware for building physical smart city prototypes and connected infrastructure. Note: Availability is TBD and will be confirmed during the event kickoff, depending on the hackathon format.
Online collaboration spaces for casual conversations, team formation, brainstorming smart city solutions, and relaxation during virtual participation.
The amazing people making the 305 Hackathon Fall 2025 possible
Experience: Machine Learning Engineer at Meta
Experience: Robotics Engineer at SwiftPOD LLC
Experience: Director at CapitalOne
Experience: Senior Engineer at Found (found.com)
Experience: Assistant Project Manager at RAVA Construction, LLC
Experience: Technical Architect at Capgemini
Experience: Senior Software Engineer at IIT Bhubaneswar
Experience: Lead SWE at Dub
Experience: Technical Account Manager / Integration Consultant at Voucherify
Experience: Sr. Software Engineer at T. Rowe Price
Experience: Technical Architect at 3 Share
Experience: Staff Cloud Security Engineer at Rubrik Inc
Experience: Senior Manager at Walmart
Experience: AI Big Data & Cloud Architect at Microsoft
Experience: Project Engineer at Lane Construction
Experience: Senior Software Engineer, Cloud Infrastructure at Autodesk
Experience: Senior Software Engineer at Pangolin Laser Systems, Inc.
Our hackathon series features a powerful network of 50+ industry professionals, 25+ academic experts, and renowned thought leaders who participate as judges, mentors, and speakers across our events. This expert community has experience at leading companies like Google, Microsoft, Meta, Amazon, and top universities.
Help shape the future of urban technology by volunteering with us. Whether you're an industry expert, learner, or passionate about smart cities, we have opportunities for both in-person and virtual participation!
Find answers to common questions about the 305 Hackathon Fall 2025
Follow us for smart city updates and 305 Hackathon Fall 2025 announcements
The organizations powering the 305 Hackathon Fall 2025 smart city revolution
Join us in building the future of urban technology and connect with the next generation of smart city developers.
Download Smart City Sponsorship Info