refractal - Platform Engineer

• A product-minded platform engineer who makes complex systems clear and predictable and takes ownership from the data model to the customer integration. • Strong backend experience with HTTP APIs; Python and FastAPI experience is preferred. • Experience with observability, tracing, relational databases, and database migrations. • Sound judgement around API design, versioning, SDKs, and compatibility. • A strong understanding of authentication, authorisation, API keys, and multi-tenant access control. • Good JavaScript and React skills for building operator-facing product surfaces. • The ability to work independently and own technically uncertain customer problems. • Radical transparency. We believe the best work happens when everyone feels able to give and receive honest, constructive feedback. • Public service. We see AI security as a form of public service. Getting the AI transition right means putting the right infrastructure in place to manage the threats that come with it, and our work helps protect the institutions and services society depends on. • Fail fast. We test ideas early, seek feedback and learn quickly. We experiment rapidly and change course when something isn't working, without compromising on security. • Pragmatism, not dogmatism. We choose approaches based on how well they solve the problem. That means combining established cybersecurity methods with frontier AI research, questioning our assumptions, and changing our minds when the evidence changes.