Senior Front-End Engineer

Meridian Labs is building an open source platform for the research and evaluation of large language models. We’re looking for a Senior Front-End Engineer to help build the interfaces that researchers use to interact with complex evaluation data through tools like Inspect Viewer and Inspect Viz.

You’ll help build the products that AI researchers use to make sense of model behavior—turning dense evaluation results into clear, actionable insights. This role combines front-end expertise with product sensibility and direct engagement with our user community.

• Build and ship production features in Inspect’s front-end applications using Type Script and React
• Own significant portions of our UI codebase and make sound technical decisions
• Collaborate with internal engineers and gather feedback from external users to inform product direction
• Design compelling, usable interfaces for technically sophisticated users
• Participate in our open source community—reviewing PRs and engaging contributors
• Communicate progress and decisions to leadership and stakeholders

• 5+ years of software engineering experience
• 3+ years building production web applications with Type Script and React
• Experience owning and shipping significant front-end features
• Track record of executing projects with multiple stakeholders
• Strong interpersonal skills and collaborative mindset
• Bachelor’s degree in CS or related field (or equivalent experience)

• Experience with Python and comfort contributing to backend systems
• Background in data visualization or complex UI for technical users
• Experience with open source communities
• Familiarity with AI safety, model evaluation, or ML operations

Meridian Labs is based in Boston, MA. We prefer in-person or hybrid work.

$150,000 – $225,000 with benefits, commensurate with experience.