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Jun Park

Researcher · Founder

Machine learning

Now Founder and CEO · Hillclimb

@jparkjmcycombinator.com ↗

Founder and CEO of Hillclimb (YC Fall 2025), which builds RL environments and training data for frontier labs aimed at AI research ability. Previously a research engineer at DeepMind and a professional VALORANT player.

Sourcesycombinator.comEducation and jobs are read from their own homepage or employer's page; papers checked on arXiv. From LinkedIn only the person's own public posts are read; GitHub is a link only.

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