Senior Product Security Engineer
LMArena
About this role
A Senior Product Security Engineer at LMArena is responsible for leading the design and implementation of security systems that protect the platform's integrity and user trust. The role involves developing security features to mitigate adversarial behavior, conducting threat modeling and security architecture reviews, and collaborating with engineers to create secure APIs and data flows. With a hands-on approach to coding and tool building, this position ensures that security practices are integrated throughout the product lifecycle, directly influencing user experiences and the security posture of the platform.
Skills
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
$146k – $194k
per year
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