Backend Engineer

We're looking for a skilled Backend Engineer to join our team. As a Backend Engineer, you will work on xAI's production systems that power the API. You will design, implement, and maintain reliable and horizontally scalable distributed systems. Our backend infrastructure is written in Rust, so familiarity with a compiled language such as C++, Rust, or Go is highly beneficial.

Responsibilities:

• Design, implement, and maintain reliable and horizontally scalable distributed systems
• Work closely with the team to identify and solve pain points
• Collaborate with the team to ensure high-quality code and architecture
• Participate in code reviews and contribute to the improvement of the codebase

Requirements:

• Expert knowledge of either Rust or C++
• Experience in designing, implementing, and maintaining reliable and horizontally scalable distributed systems
• Knowledge of service observability and reliability best practices
• Experience in operating commonly used databases such as PostgreSQL, Clickhouse, and MongoDB

Preferred Skills and Experience:

• Knowledge of Python
• Experience with Docker, Kubernetes, and containerized applications
• Expert knowledge of gRPC (unary, response streaming, bi-directional streaming, REST mapping)
• Hands-on experience with LLM APIs, embeddings, or RAG patterns
• Track record of delivering user-facing software at scale