9c1bbf0d-969 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

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]]> full-time mid remote Rust, C++, Distributed Systems, Service Observability, Database Management, Python, Docker, Kubernetes, gRPC, LLM APIs Engineering Technology xAI https://logos.yubhub.co/x.ai.png xAI creates AI systems to understand the universe and aid humanity in its pursuit of knowledge. https://x.ai/ https://job-boards.greenhouse.io/xai/jobs/4991448007 London, UK 2026-04-18 7d5f4c9f-f38 Backend Engineer - Enterprise We're seeking a highly skilled Backend Engineer to join our Enterprise Agents Engineering Team. As a key member of this team, you will be responsible for building full-stack solutions with ownership of end-to-end product execution from ideation to deployment. You will collaborate closely with your team to incorporate cutting-edge AI advancements into robust and reliable user-centric solutions.

Responsibilities:

  • Design, implement, and maintain reliable and horizontally scalable distributed systems
  • Develop expertise in service observability and reliability best practices
  • Operate commonly used databases such as PostgreSQL, Clickhouse, and CockroachDB
  • Work hand-in-hand with customers to gather feedback, refine features, and evolve products to address real-world challenges

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 CockroachDB

Preferred Skills and Experience:

  • Expert knowledge of Python
  • Experience with Docker, Kubernetes, and containerized applications
  • Expert knowledge of TypeScript
  • 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

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]]> full-time senior onsite Rust, C++, service observability, database management, Python, Docker, Kubernetes, gRPC, LLM APIs Engineering Technology xAI https://logos.yubhub.co/xai.com.png xAI creates AI systems to understand the universe and aid humanity in its pursuit of knowledge. https://www.xai.com/ https://job-boards.greenhouse.io/xai/jobs/5006477007 Tokyo, JP 2026-04-18