Fullstack Software Engineer (AI-Native)

Proton is building the AI operating system for wholesale distribution, embedded in the workflows that move nearly every physical product on the planet. We're hiring a Senior Fullstack Engineer to ship products end-to-end across our CRM platform for distributors.

Requirements

• 5+ years as a software engineer with real, demonstrable fullstack delivery — production systems, real users, real ownership.
• Strong fundamentals. You understand what the code is doing and why. You can read a stack trace, reason about a query plan, debug a race condition, and tell when an agent is wrong.
• Daily, hands-on use of agentic dev tools. Claude Code, Cursor agent mode, Codex, or equivalent — used to ship real features, not just autocomplete.
• Generalist instinct. You're comfortable jumping between Vue, Python, SQL, infra, and integrations.
• Database and systems chops. You design efficient schemas and queries, understand indexing and tradeoffs, and can reason about distributed-system failure modes.
• Startup mindset. Pragmatic, fast, biased to ship, comfortable with ambiguity, close to users.
• Strong communication. You can explain technical decisions to PMs, designers, and customers — in writing and in person.
• Ownership and judgment. You take features from idea to production and exercise good taste on what to build, what to cut, and when AI output isn't good enough.

Benefits

• Competitive salary + company stock options — we want you to feel like an owner.
• Flexible schedule with high autonomy.
• Unlimited PTO + 10 company-paid holidays.
• 12 weeks fully paid parental leave (primary and secondary, including adoption and fostering).
• Annual company-paid offsites.