Staff Full-Stack Engineer
About The Position
About Promptfoo Promptfoo is the leading AI security testing platform, trusted by 250,000+ developers to build secure, reliable AI applications. Backed by Andreessen Horowitz and Insight Partners, we equip the world's largest enterprises with automated red teaming, vulnerability scanning, and continuous monitoring for LLM-based systems. The Role We're hiring a staff engineer to shape core features and scale our open-source toolkit into an enterprise-grade platform. You will speak with users, scope solutions, ship code across the stack, and raise our engineering bar. As a staff engineer, you'll also mentor team members and help establish technical standards that drive excellence across the organization.
Requirements
- 6+ years building production software with staff-level impact
- Strong TypeScript plus comfort with React, Node.js, and SQL
- Experience shipping or integrating LLM-powered systems
- Track record of open-source contribution or maintenance
- Habit of writing tests and leaving code cleaner than you found it
- Clear written and verbal communication; enjoy talking with customers
- Thrive on ownership and quick iteration in an early-stage startup
- Experience mentoring engineers and raising team capabilities through code reviews and technical guidance
- Demonstrated ability to lead technical initiatives and influence engineering culture
Nice To Haves
- Python, Rust, or Go experience
- Background in security, red teaming, or developer tooling
- Experience scaling event-driven or queue-based systems
Responsibilities
- Chat with ML, security, and DevOps teams to map pain points
- Turn feedback into concise specs and quick prototypes
- Build React UI, Node.js/TypeScript APIs, and Python plug-ins
- Own end-to-end delivery from design to docs
- Add tests, refine types, and optimize evaluation pipelines
- Improve CI/CD, linting, and release automation
- Mentor mid-level and senior engineers through code reviews, pair programming, and technical guidance
- Set technical standards and best practices that elevate the entire engineering team
- Lead architectural discussions and help the team navigate complex technical decisions
- Foster a culture of learning through documentation, internal tech talks, and knowledge sharing
- Review community PRs, mentor contributors, and polish docs
- Demo new features in GitHub issues, Discord, and webinars
Benefits
- High Ownership : Drive product direction and architecture for a category-defining platform
- Visible Impact : Your code ships to thousands of developers the same day
- Learning : Work at the cutting edge of AI security and LLM evaluation
- Culture : Remote-first, test-driven, community-minded team that values clean code
- Leadership : Shape engineering standards and mentor talented engineers in a growing team
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
