Co-founder of Proximal, a San Francisco research lab for training data that builds reinforcement learning environments for code. Earlier built open RL infrastructure at Prime Intellect, co-founded Revideo and was an early engineer at Dynamo AI. Studied physics at RWTH Aachen.
Path
Current
- PRProximalCo-founder
Previous
Prime IntellectBuilt open RL infrastructure- RYRevideo (YC S23)Co-founder
- DADynamo AIEarly engineer, federated learning
Sourcesjustusmattern.comproximal.aiEducation 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.
Account links back to x.com/MatternJustus · Avatar from their X account, taken 2026-11-02
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