Willem Röpke
Member of Technical Staff @ Cohere, working on large language models. I'm broadly interested in reinforcement learning, multi-objective decision making & LLMs.
Experience
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Jan 2026 - presentMember of Technical StaffReinforcement learning & LLMs.
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2021 - 2025PhD CandidateVrije Universiteit Brussel (VUB), AI LabMulti-objective RL; teaching assistant for the machine learning course.
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Mar 2025 - May 2025Research VisitorUniversity of Oxford, FLAIRRL post-training for large language models.
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Nov 2022 - Dec 2022Research VisitorUniversity of GalwayDistributional MORL; joined the research group of Prof. Patrick Mannion.