# Product Designer at Lemma

- Company: Lemma (YC F25)
- What the company does: Production Monitoring for AI agents. Backed by Y Combinator.
- Company website: https://www.uselemma.ai/
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco, CA, US
- Work setup: On-site
- Pay: $140K to $190K base salary per year (USD)
- Posted: 2026-08-13
- Apply by: 2026-10-08
- Apply: https://www.ycombinator.com/companies/uselemma/jobs/P1Th8uJ-product-designer
- Page: https://www.1752.vc/careers/jobs/lemma-product-designer/

## About the role

Lemma reads all of your agent conversations, finds the failures nobody knew to look for, and opens the PR that fixes them. So the surface area here is dense and unglamorous. Trace timelines, diff views, evidence chains, nested detail states, tables that have to stay readable at ten thousand rows. This is not a marketing site job. If you want to make beautiful things, there are easier products to make beautiful.

## What they're looking for

- 3+ years designing software, with real examples of complex, data-dense interfaces. Consumer polish alone won't transfer here
- You write code. React and TypeScript, well enough to ship your own work to production
- You've designed for engineers before, or you are one. Knowing what a trace is and why a diff view is hard saves us months
- Taste you can defend. We'd rather hear why you cut something than why you added it
- Comfortable with ambiguity. Nobody here will hand you a spec, and the product changes weekly

Tags: Design