Machine Learning Scientist - Open Source Lead
LMArena
About this role
The Machine Learning Scientist - Open Source Lead at LMArena is responsible for advancing open-source research on AI model evaluation. The role includes designing and conducting experiments to assess model behavior, developing new methodologies and metrics, and analyzing large-scale user interaction data. Collaboration with engineers and product teams is essential to implement findings into production, while also engaging with the broader research community to promote transparency and trust in AI evaluations. The position requires expertise in machine learning, statistics, and a commitment to open science practices.
Skills
Qualifications
About LMArena
www.lmarena.aiLMArena is an innovative platform designed for evaluating AI through human preferences. It allows users to compare various AI models, gather insights, and share their feedback to enhance AI development and research. The platform features a public leaderboard, providing a competitive edge for the best AI models based on user interactions and performance assessments. LMArena serves as a comprehensive resource for those looking to explore and engage with advanced AI technologies.
Recent company news
AI startup LMArena triples its valuation to $1.7 billion in latest fundraise
Jan 6, 2026
AI Evaluation Startup LMArena Valued at $1.7 Billion in New Funding Round
Jan 6, 2026
LMArena lands $1.7B valuation four months after launching its product
Jan 6, 2026
AI evaluation startup LMArena raises $150M at $1.7B valuation
Jan 6, 2026
LMArena Hits US$1.7 Billion Valuation After Series A Round
Jan 7, 2026
About LMArena
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Leadership Team
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
Unlock Company Insights
View leadership team, funding history,
and employee contacts for LMArena.
Salary
$152k – $204k
per year
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