Senior / Staff Full-stack Product Engineer

Promptfoo is the MIT-licensed open-source toolkit 125 000+ developers use to evaluate and secure LLM apps. We just closed an $18.4 M Series A led by Insight Partners with participation from a16z and are scaling a small, senior team of high-agency builders.

Open roles

• Senior / Staff Full-stack Product Engineer (TypeScript + Python)
• Senior / Staff AI Security & Red-Team Engineer
• Solutions Architect / SE (multiple)
• Product Marketing Manager (cyber focus)
• Enterprise Account Executive (Bay Area, multiple)
• Technical Writer
• Developer Advocate

Why join

• Build the definitive AI security stack already used at 30+ Fortune 500s.
• Work in open source.
• Competitive salary, meaningful equity, async-friendly culture of ownership.