Eoin O'halloran (eohalloran410)

United Kingdom

OpenAI Build Week

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Join a global week of building with Codex

$100,000 in prizes
Winners announced
46674 participants

Martingale Hacks

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Don't just build another to-do app — apply your skills to challenge the S&P 500 itself.

Non-monetary prizes
Winners announced
202 participants

Gemini 3 Hackathon

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Build what's next

$100,000 in prizes
Winners announced
35508 participants

Hack-Earth

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Sustainable Solutions Powered by AI

$250 in prizes
Winners announced
343 participants