Machine Learning Scientist - ML Research is open at Arena in SF Bay Area. The posting gives no salary; similar roles in the United States advertise a median of $168K. Posted on Dec 18, 2025, and still on Arena’s careers page when we last checked, on Nov 14, 2026.
About the role
Arena Intelligence is seeking a variety of machine learning scientists to help advance how we evaluate and understand AI models. You’ll help design and analyse experiments that uncover what makes models useful, trustworthy and capable through human preference signals. Your work will contribute to the scientific foundations of understanding AI at scale. This role is deeply interdisciplinary. You’ll work closely with…
The opening lines of the posting. The rest is on Arena’s careers page.
Hiring at Arena
Arena has 21 open roles right now. Most are in Engineering, Security and People & Recruiting. See all its roles
