API Platform Engineer — Scalable Backend (Rust/C++)

x.ai • london, england • Posted May 21, 2026

About the Role

x.ai in Greater London is seeking a backend infrastructure engineer to build the xAI API for developers worldwide. Ideal candidates will have expert knowledge of Rust or C++, experience in designing and maintaining distributed systems, and a strong understanding of observability and reliability. Responsibilities include building high-throughput API infrastructure and managing system scalability. This role requires hands-on initiative and excellent communication skills in a collaborative environment.
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