Senior Product Designer

The Role:

LMArena is seeking an experienced (Senior+) Product Designer to help craft beautiful, intuitive product experiences for our growing community of users. In this role you will own the end-to-end design of new products and features that are on the bleeding-edge of AI innovation. You will partner closely with engineering to explore, prototype, iterate, test and ship products across our platform. This role is ideal for someone who is comfortable with ambiguity, has a track record of simplifying complexity, enjoys building products 0-1 and wants to shape the future of how people interact with and evaluate AI.

Responsibilities:

• Lead the end-to-end design process of new features and products.

  • This means everything from prototyping new ideas, to writing proposals and specs, to working with engineering on scope and implementation, to tracking feedback and data, to iterating post-launch.

• Deeply understand our HXC (High Expectation Customer), why they love our product and how they use it. 

• Understand business goals and user needs with a strong point of view on how we can meaningfully make their experience better and grow our business.

• Stay up to date on user feedback and analytics, spot trends and use insights to prioritize work and improve the product.

• Help develop and expand our design system to ensure consistency and quality across all product surfaces.

• Influence the culture and processes of the design team and drive product vision.
  
  

Requirements:

• At least 5 years of Product Design experience working on a consumer or developer facing application with a portfolio showcasing:

  • Visual Design - a very high level of visual design craft, attention to detail and ability to surprise and delight users.

  • Product Experience - history of shipping features for consumer-facing products, ideally building 0-1 products or working at or with early stage startups.

  • Impact - track record of making informed, thoughtful design decisions that had a measurable impact on the product’s success.

• Ability to make appropriate tradeoffs between short term and long term goals, informed by business and/or user needs.

• Strong interaction, visual and design system skillset:

  • Very strong proficiency in Figma (obviously)

  • Prototyping tool of your choice, doesn't matter what it is as long as you use it well.

• Prototype-first mindset. You build prototypes and test them to inform your design decisions.

• Must be comfortable with ambiguity and simplifying complex ideas.

• Strong writing skills. You feel comfortable writing a PRD or making edits/changes to one. You have strong visual, verbal and written storytelling skills.

Bonus (not required):

• Strong understanding of AI/LLM space

• Strong content writing skills

Who is LMArena?
Created by researchers from UC Berkeley’s SkyLab, LMArena is an open platform where everyone can easily access, explore and interact with the world’s leading AI models. By comparing them side by side and casting votes for the better response, the community helps shape a public leaderboard, making AI progress more transparent, and grounded in real-world usage.

Why Join Us?
Trusted by organizations like Google, OpenAI, Meta, xAI, and more, LMArena is rapidly becoming essential infrastructure for transparent, human-centered AI evaluation at scale. With over one million monthly users and growing developer adoption, our impact is helping guide the next generation of safe, aligned AI systems—grounded in open access and collective feedback.

Our work is regularly referenced by industry leaders pushing the frontier of safe and reliable AI. Sundar Pichai, Jeff Dean, Elon Musk, and Sam Altman.

• High Impact: Your work will be used daily by the world’s most advanced AI labs.

• Global Reach: Develop data infrastructure powering millions of real-world evaluations, influencing AI reliability across industries at the top-tier

• Exceptional Team: We are a small team of top talent from Google, DeepMind, Discord, Vercel, UC Berkeley, and Stanford.
  
  

What we offer:

• The cash compensation for this position has not yet been finalized. Actual compensation will depend on job-related knowledge, skills, experience, and candidate location.

• Competitive salary and meaningful equity

• Comprehensive healthcare coverage (medical, dental, vision)

• The opportunity to work on cutting-edge AI with a small, mission-driven team

• A culture that values transparency, trust, and community impact

Come help design the space where anyone can explore and help shape the future of AI!