Kevin Loeffler (loefflerlabs)

Cyber R&D engineer from Denver

Colorado, United States
Website
GitHub
LinkedIn

Build, Ship, Shape: Amazon Developer Hackathon

Online

Build across Amazon Devices and shape what's next.

$138,000 in prizes
Oct 23, 2026 03:00 PM EDT to submit
64897 participants

CALL-E: Your Code Is Calling

Online

Turn your code into an AI agent that makes real phone calls.

$10,000 in prizes
Winners announced
3199 participants

OpenAI Build Week

Online

Join a global week of building with Codex

$100,000 in prizes
Winners announced
46673 participants

Reddit’s Games with a Hook Hackathon

Online

Join Reddit and Phaser to build incredible games for the Reddit community!

$40,000 in prizes
Winners announced
3062 participants

Hack for Humanity | 2026

Online

Developing software for the environment

Non-monetary prizes
Winners announced
768 participants

Codegeist 2025: Atlassian Williams Racing Edition

Online

Accelerate innovation: Build on Forge, extend Jira, Confluence, Bitbucket, and more— win your share of $120K.

$120,000 in prizes
Winners announced
3504 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
4967 participants

Cloud Run Hackathon

Online

Build applications with Cloud Run

$50,000 in prizes
Winners announced
3417 participants

Baseline Tooling Hackathon

Online

Accelerate availability of modern web features

$10,000 in prizes
Winners announced
2917 participants

TiDB AgentX Hackathon 2025

Online

Forge Agentic AI for Real-World Impact

$30,500 in prizes
Winners announced
2652 participants

2025 Techinance Cyberhack

Online

Crafting innovative ideas to help combat cybersecurity risks and spread awareness for data privacy and cybersecurity

Non-monetary prizes
Winners announced
130 participants

AWS Lambda Hackathon

Online

Build solutions that scale: power your ideas with AWS Lambda

$15,000 in prizes
Winners announced
3713 participants

Forge Quest: Bonus Level

Online

Sharpen dev skills, build impactful apps, and earn rewards!

Non-monetary prizes
Winners announced
2361 participants

AWS Presents: Breaking Barriers Virtual Challenge

Online

Infuse generative AI with AWS and connectivity to enable equitable digital experiences for all

$16,000 in prizes
Winners announced
2316 participants

Mindfulness Hacks

Online

Fostering Minds, One Line at a time

$250 in prizes
Winners announced
338 participants

Accelerate App Development with GitHub Copilot

Online

Empowering the Next Generation of Developers with GitHub and Azure

$10,000 in prizes
Winners announced
2262 participants

Hackonomics 2024

Online

An experience to help educate and grow insight into Computer Science and Economics.

$1,045 in prizes
Winners announced
321 participants

Google Chrome Built-in AI Challenge

Online

Develop a web application or Chrome Extension that uses one or more Chrome built-in AI APIs to interact with integrated models such as Gemini Nano.

$65,000 in prizes
Winners announced
8484 participants

Lightning Fast AI Hackathon

Online

Build the AI agents of the future by taking advantage of SambaNova’s Lightning Fast Inference Speeds of Today

$10,000 in prizes
Winners announced
566 participants

Pangea Securathon Showdown

Online

Create secure and compliant apps quickly and easily with a few lines of code. What will you build?

$5,000 in prizes
Winners announced
442 participants

Global Gamers Challenge

Online

Build epic Flutter games to assist in the battle to defend the planet!

$103,890 in prizes
Winners announced
3479 participants

GitLab Innovation Pitch Competition

Online

Software. Faster.

$30,000 in prizes
Winners announced
881 participants

Codegeist Unleashed

Online

Can AI fuel the workplace? Find out by building AI apps on Atlassian’s Forge platform. $172,500 in prizes and trips to Amsterdam for the top 3 winners.

$172,500 in prizes
Winners announced
1686 participants

Square Developer Hackathon 2023

Online

Build new apps or app features with emerging technologies with Square

$81,000 in prizes
Winners announced
1298 participants