Arvydas Kostinas (arvydas-kostinas)

Web & Product Builder / Creative Technologist. Building digital products, websites and practical AI tools.

Vilnius, Vilnius County, LT
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PayPal AI Hackathon

Online

Build what’s next with PayPal and AI

$67,500 in prizes
Nov 12, 2026 03:00 PM EST to submit
13283 participants

Agents for Humans Hackathon

Online

Build an AI agent with Strands Agents SDK that handles repetitive tasks

$40,000 in prizes
Winners TBD
9923 participants

The WebMCP Challenge

Online

10 days for exploring what’s possible with WebMCP

$35,000 in prizes
Winners announced
7057 participants