Def Hacks Worldwide 3.0 is finished!

We have over 600+ attendees from 43 different countries.

If you have any questions, please email [email protected]


DefHacks | Worldwide 3.0 hackathon is a free 36-hour event for high school and college students. It is a worldwide event in which students of all skill levels around can collaborate to create innovative projects to solve the worlds problems. Students can also participate in workshops to learn new skills, ask questions to top tech minds, participate in fun mini-events, and win amazing prizes!


Any high school or college student across the world is welcome to apply!


Friday, June 25, 2021 8:00 AM EST - Sunday, June 27, 2021 11:59 PM EST


The hackathon will be COMPLETELY online. We'll conduct the majority of the hackathon on Discord, and the opening/closing sessions will be on a YouTube livestream!

Interested in attending?

Registrations are now open! After reading the Code of Conduct, hackers can register through DevPost's platform (button below) and mentors/judges can register with this link:!

Guest Speakers

Event Sponsors

Gold Tier

Silver Tier

Bronze Tier

Authentication Partner

Other Sponsors

Community Partners

  Hackathon Schedule - TBA

All times in Eastern Standard Time (EST)
June 25th (Friday)
4:30 AM - 4:30 AM Last Chance to Register
10:00AM - 12:00PM Datastax: Introduction to NoSQL databases
5:00 PM - 6:30 PM Opening Ceremony
7:00 PM - 7:30 PM Coil Workshop
7:30 PM - 8:30 PM Viral Shah - Fireside Chat & AMA
9:00 PM - 10:00 PM Building TwilioQuest Extensions with Javascript
June 26th (Saturday)
8:30 AM - 9:30 AM Eddie Jaoude's Open Source Adventures
9:30 AM - 10:30 AM Josh Starmer - Ask me Anything
10:30 AM - 12:00 PM Postman: Introduction to API's 101
1:00 PM - 1:30 PM EchoAR Workshop
2:00 PM - 3:00 PM API Development with Flask Workshop
3:30 PM - 4:00 PM Michael Seibel - Keynote
3:30 PM-4PM Raffle
3:30 PM - 4:30 PM Weather Grapher Development using a web API, Chart.js Library, HTML, CSS and JS
6:00 PM - 7:30 PM DropBase Founders - Fireside Chat & AMA [Starting a Startup]
8:00 PM - 9:00 PM Introduction to Python Workshop
9:30 PM - 10:30 PM Kahoot Session
June 27th (Sunday)
8:30 AM - 9:30 AM Various Mini-Games session
10:30 AM Initial Project Due
11:00 AM Projects Due - Hackathon Ends
5:00 PM-6:00 PM Closing Ceremony

Head Organizers

Sidharth Subbarao

Chief Organizer

Sohil Athare

Head of Logistics

Daksh Jain

Head of Outreach

Mahit Namburu

Head of Finance

Andrew Yang

Website Manager


Avinash Upadhyaya

Nishant Mishra

Atharv Jayaprakash

  Frequently Asked Questions

What is a hackathon?

A hackathon is an event, typically lasting several hours (or even days), in which a large number of people meet to code and show off their products.

Do I need to know how to code?

Nope! If you already know how to code, that's great! However, if you don't know how to code, this is the perfect time to learn. We will be hosting beginner workshops for you, and we will have experienced mentors to help you with your hacks!

How do teams work?

You can work individually or work in a team of up to 4! If you don't know anyone participating at the hackathon, don't worry! There will be many other people in the same situation as you. We highly recommend you reach out to other hackers on the slack workspace and form teams. You won't have to register as a team, just register individually. When it's time to submit your project, you can add the names of all your teammates there!

What can my team make?

Your team has the freedom of making whatever you desire! In addition to our sponsored prompts, we will be having 2 other prompts you can submit your hack in: one for coronavirus related hacks, and another for best overall hack!

How much does it cost?

DefHacks is completely free for all hackers. Additionally, we will be providing DefHacks swag, and swag from the sponsors that have made this event possible.

What do I need for the hackathon?

The only thing you need is a device to access our slack website, and any materials needed for creating your hack!

Can I volunteer as a mentor or judge?

Yes! DefHacks wouldn't be possible without our volunteers. We will open mentor and judge sign up here!