marcusmattus mattus (marcusmattus)

London, United Kingdom
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PayPal AI Hackathon

Featured

Online

Build what’s next with PayPal and AI

$67,500 in prizes
Nov 12, 2026 03:00 PM EST to submit
30477 participants

Codex x TwitchCon Hackathon

Online

Build for streamers and their community on Twitch with OpenAI Codex. $25,000 in prizes, and the top 5 are shown on the Codex Booth stage at TwitchCon.

$25,000 in prizes
Winners TBD
2219 participants

RevenueCat Shipaton 2026

Online

Ship apps and start making money.

$740,000 in prizes
Winners announced
28561 participants

The WebMCP Challenge

Online

10 days for exploring what’s possible with WebMCP

$35,000 in prizes
Winners announced
7042 participants

Meta Horizon Start Developer Competition

Online

Accelerate your VR development journey with Meta Horizon Start and compete for $1.5M in cash prizes.

$1,500,000 in prizes
Winners announced
2865 participants

Kiroween

Online

Build something wicked for Kiroween, our annual Halloween-themed hackathon where developers dare to code in dark mode

$100,000 in prizes
Winners announced
4958 participants

Perplexity Hackathon @ London, UK

Greater London, United Kingdom

Create an internet-enabled project to inspire curiosity, seek knowledge, or reason through complex tasks.

£8,000 in prizes
Oct 17 – 18, 2025
86 participants

Starknet Re{Solve} Hackathon

Online

Unlock tomorrow's apps: Ultra-low fees, Ethereum security, Bitcoin power

$47,500 in prizes
Winners announced
1473 participants

GKE Turns 10 Hackathon

Online

Build next gen microservices with AI Agents

$50,000 in prizes
Winners announced
4707 participants

OpenAI Open Model Hackathon

Online

Build with gpt-oss, OpenAI’s open weight reasoning models.

$30,000 in prizes
Winners announced
8633 participants

Meta Horizon Creator Competition: Open Source Champions

Online

Compete for a share of $1M in prizes, plus an additional $500K in prizes for newly introduced mini-challenges.

$1,500,000 in prizes
Winners announced
1212 participants

World’s Largest Hackathon presented by Bolt

Online

Build with AI for a shot at some of the $1M+ in prizes.

$1,037,500 in prizes
Winners announced
129554 participants

GenAI Hackathon with GetSeen Ventures

Cambridgeshire, United Kingdom

Join the brightest minds in UK tech ecosystem for an epic 36-hour coding marathon and win amazing prizes!

£1,000 in prizes
Mar 2 – 3, 2024
108 participants

NEARCON IRL Hackathon

Lisboa, Portugal

Step Into The Open Web

$161,000 in prizes
Nov 7 – 9, 2023
732 participants

Fitch Code For a Cause 2023 with Amazon

Greater London, United Kingdom

In-person event in the Fitch London headquarters

£5,350 in prizes
Nov 2 – 3, 2023
85 participants

Square + Google AI Hackathon

Online

Build or update an app for Square sellers that uses both Square APIs and Google AI APIs.

$100,000 in prizes
Winners announced
2431 participants

Bitcoin Olympics Hackathon

Online

Join the Bitcoin Olympics Hackathon Hosted by Bitcoin Startup Lab: Unleash Innovation and Shape the Future of Bitcoin. Build, Learn, and Win! Over $100K in prizes!

$176,001 in prizes
Winners announced
451 participants

Fully On-Chain with ICP powered by Internet Computer

Online

Where Innovation Ignites on the Blockchain Frontier

$23,000 in prizes
Winners announced
306 participants

dAppAthon

Canada

Two week online hack to create dApps or migrate your existing apps by adding components of Web3 and empowering it with Web3 Infrastructure

$18,800 in prizes
Apr 22 – May 8, 2023
2785 participants

Royal Hackaway v6

Surrey, United Kingdom

Code, Create, Collaborate - Royal Hackaway's 6th anniversary hackathon for students worldwide

£800 in prizes
Feb 4 – 5, 2023
165 participants

Snap AR Lensathon

Online

Create the Future Now

$200,000 in prizes
Winners announced
2988 participants

monday.com Apps Marketplace Challenge: solutions for teams

Online

Build a work-altering app for one of these teams for the chance to win big! With $184,000 in total prizes we are giving away 3 Teslas, 10 MacBooks, and more!

$184,000 in prizes
Winners announced
1235 participants

Quick Base Virtual Hackathon

Online

Calling on creative problem solvers to address today’s biggest challenges using Quick Base’s low-code platform.

$250,000 in prizes
Winners announced
817 participants

Stellar Meridian Hackathon 2020

Online

Stellar Meridian Hackathon 2020

$12,000 in prizes
Winners announced
153 participants