About the 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 willDesign and build Rust backend services handling real-time policy checks at scale.Own features end-to-end – API design, schema, deployment, monitoring.Improve performance and reliability through connection pooling, caching, query optimization, and observability.Collaborate directly with product and research.RequirementsProduction experience with Rust, Python, or Go.Comfortable with async Rust (Tokio), Axum/Actix, and PostgreSQL – schema design, query optimization, debugging.Strong system design fundamentals: trade-offs, failure modes, scaling.Relocation to Paris or London (hybrid) required.StackRust, Tokio, Axum/Actix, PostgreSQL.Bonus: ClickHouse, Redis, Kafka, LLM infra (routing, inference, RAG), or high-throughput monitoring background.We offer$80k–$150k/year salary + equity; higher figures can be negotiated.Official employment, visa and relocation help.Compensation: $80K – $150K
• Higher figures and equity are negotiable
• $80K – $150K
• Higher figures and equity are negotiableFind Jobs in France on Arbeitnow
Requirements
Qualifications
- Experience: 5+ Years
Skills & Languages
analytics Market & Role Insights
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payments Estimated Market Compensation
100 comparable listingsMarket Median: ₹34,500. Range reflects the 25th to 75th percentile of similar active roles on Jobsfiy.
speed Category Snapshot: White Circle
Active Category Roles
5+
Remote Flexibility
0% Remote
Target Experience
Senior
Education Details
Minimum Education
Master Degree
Accepted Degrees
LLM
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