Join FFaX

We're looking for two to three technical co-founders

Remote, async-first, one sync a week. The client is open source and your code is credited on GitHub. FFaX is a California company building for engineering teams worldwide.

Join FFaX

Open roles

Systems / security engineer

Daemon, hook integration, sandbox orchestration and self-protection. Required: Go, and deep knowledge of Linux or macOS processes, files and networking. Bonus: EDR, proxies, eBPF, container security.

Security research engineer

Threat modeling, red-team corpora, Semgrep rules, the LLM review pipeline and the decoy layer. Required: Python, and offensive or security research experience. Bonus: prompt injection, MCP, agent frameworks.

Full-stack engineer

Console, IDE extensions and approval flows. Required: TypeScript and React, plus a Go or Python backend. Bonus: developer tools.

How we start working together

1 · Send an email

Write to [email protected] with your GitHub, what you've built, the role you want and the hours you can commit each week.

2 · A two-day challenge

In Claude Code, reproduce an agent hijacked by a README injection that reads .env and sends it out, then write the block.

3 · A one-hour video call

Questions in both directions.

4 · A six-week trial

Up to 15 hours a week on one part of the demo: hooks, the action log, decoys or the console.

5 · Sign

When the demo runs, three design partners have installed it and both sides want to continue, we sign the co-founder agreement.

Design partners

Design partners

Teams can install the demo for free

Engineering teams using AI coding agents can install the demo for free and shape the product. Email [email protected].

Apply

Send your GitHub and the role you want

Write to [email protected] with what you've built, the role you want and the hours you can commit each week. We reply to every message, usually within two days.