Junha Park

Hi, I’m Junha.

I work on evaluations for LLM agents, focusing on reward hacking. I'm particularly excited about a future where open-source maintenance is fully autonomous.

I authored a task for Terminal-Bench and am building a RISC-V VM benchmark to study how the maturity of a starting codebase shapes agents' architectural decisions.

I'm also deeply interested in trustless consensus systems. I created FastRoll, a Rust client for the JAM protocol, the successor to Polkadot's relay chain. FastRoll received a JAM Prize Milestone 1 award. I’m a Rank 3 Fellow in the Polkadot Technical Fellowship and a member of the Gray Paper Editorial Board.