Ruoyun He (he13723156002)

Singapore

Kiroween 2026

Featured

Online

Build something wicked and git commit to the darkness.

$100,000 in prizes
Dec 04, 2026 05:00 PM EST to submit
13275 participants

Build, Ship, Shape: Amazon Developer Hackathon

Online

Build across Amazon Devices and shape what's next.

$138,000 in prizes
Winners TBD
35457 participants

TikTok TechJam 2026

Online

Build with joy, code for change

$34,500 in prizes
Winners announced
3190 participants