CEF AI (cef.ai) | Blockchain Engineer, Founding Platform Engineer | SF, Berlin (Remote) | €100K–€165K + Equity We're building decentralized AI infrastructure, an inference platform for sovereign AI agents unifying orchestration, data, and compute. Small team, high ownership, real equity. Blockchain Engineer — Rust/Substrate L1 protocol dev. Custom pallets, ZK primitives, on-chain governance. 7+ yrs Rust. Founding Platform Engineer — Core backend, APIs, SDKs, developer tooling. Build systems from scratch, not maintain them. 4+ yrs production software. Fast hiring process, paid 5-day trial. Direct access to founders.Apply: https://join.com/companies/cefai