Backed by Y Combinator.
About the role
Flux is building the world’s first AI Hardware Engineer, and that means everything around it has to just work. As a Platform Engineer, you’ll work on the full-stack systems that power Flux’s platform experience beyond the editor: billing, authentication, onboarding, and integrations.
What they're looking for
- Experience with multi-tenant SaaS or collaborative web platforms
- Familiarity with auth frameworks (OAuth, JWT, Firebase Auth)
- Exposure to observability stacks (Sentry, Datadog, Grafana)
- Prior experience building internal tools or admin dashboards
- Startup or 0 → 1 product-building experience
More about this role
Flux is taking the hard out of hardware. To do this, we’re building the world's first AI hardware engineer. Founded in 2019, our platform enables anyone to go from idea to manufacturable board using nothing more than a natural language prompt. This democratizes a process that has historically required years of specialized expertise.
We're going after a $15B+ electronic design automation market, backed by 8VC, Bain Capital Ventures, Liquid 2 Ventures, Outsiders Fund, Figma board member John Lilly, and GitHub founder Tom Preston-Werner. In February 2026, we closed a total of $37M in funding to accelerate that mission.
What happens when we unlock the ability for anyone to make hardware? We fundamentally reshape the world. That's our mission, and we're just getting started.
Flux is building the world’s first AI Hardware Engineer, and that means everything around it has to just work.
As a Platform Engineer, you’ll work on the full-stack systems that power Flux’s platform experience beyond the editor: billing, authentication, onboarding, and integrations.
You’ll ship production features that touch every user, keep the lights on, and make it possible for Flux to scale.
Build and maintain...
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