Product Engineer, Backend (Rust)
Npv Paris, France Posted 6 Sept 2026Full-time
About this role
We're looking for a Product Engineer, Backend (Rust) to join White Circle , an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production. You will Design and build Rust backend services handling real-time policy checks at scale. Own features end-to-end – API design, schema, deployment, monito
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