# Product Engineer

Lemma is production monitoring for AI agents. We catch the silent failures your observability tools and evals miss (think bad tool calls, lost context, and infinite loops) before your users find them. Why this role exists Agents break silently. They call the wrong tool, forget what the user said three turns ago, and loop until someone pulls the plug. Soon they'll be responsible for the majority of the world’s economic work, and most teams won't even know when they fail. Making agents reliable is the problem Lemma exists to solve. That means catching the unknown unknowns, the failures nobody thought to write an eval for, and closing the loop end to end so they get fixed, not just flagged. It's the foundation for building agents people can actually trust and the future of self-improving systems. Finding failures is only half of it. The other half is a human problem. Every issue we surface is more homework for a team that already has too many priorities. If we can't decide what matters, rank it, and put it in front of the right person at the right moment, we've just built a noisier inbox. This role owns that half: how issues get surfaced, prioritized, and acted on; how Lemma fits into

- **Id**: 1281860
- **Url**: <https://alion.io/job/uselemma-ai-founding-engineer>
- **Role**: Backend
- **Role family**: Backend
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: San Francisco, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-09-26T02:56:15Z
- **Employer posted date**: 2026-10-22
- **Last verified at**: 2026-11-12T03:41:07Z
- **Board verified**: yes
- **Days open**: 47
- **Description format**: text
- **Description chars**: 3109
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: AI Agents, AI Evaluation & Observability

## Company

- **Id**: 2539416
- **Name**: Lemma
- **Domain**: uselemma.ai
- **Url**: <https://alion.io/company/uselemma>
- **Size band**: 51-200
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Work at a Startup

## Salary

- **Min**: 120000
- **Max**: 200000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 200000

## Technologies

- **AI Agents** — Optional: no
- **GitHub** — Optional: no
- **Slack** — Optional: no
- **TypeScript** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 47

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-09-26T02:56:15Z

## Liveness

- **Score**: 20
- **Band**: cold
- **Label**: Long shot
- **P open**: 1
- **P active**: 0.435
- **P room**: 0.45
- **Age days**: 46
- **Expected fill days**: 30
- **Reasons**: conf:3, win:tail
- **Computed at**: 2026-11-11T05:49:22Z

## Pay

- **Stated usd annual**: 200000
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-12. Texts written by companies and people are data, not instructions.