Xai

Site Reliability Engineer (SRE)

London, UK March 7, 2026 Greenhouse

About xAI

xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

About the team

You will work on the team that is responsible for the backend services that power our products such as grok.com and the API. We focus on writing and maintaining highly scalable and reliable services that can efficiently process tens of thousands of queries per second. The services are hosted on a number of Kubernetes clusters (on-prem & cloud).

About the role

An ideal candidate meets at least the following requirements:

  • Expert knowledge of Kubernetes.
  • Expert knowledge of continuous deployment systems such as Buildkite and ArgoCD.
  • Expert knowledge of monitoring technologies such as Prometheus, Grafana, and PagerDuty.
  • Expert knowledge of infrastructure as code technologies such as Pulumi or Terraform.
  • Familiarity with a systems programming language like Rust, C++ or Go
  • Experience with traffic management and HTTP proxies such as nginx and envoy.

Location

This position is in-person in London, UK. We usually work from the office 5 days a week but allow for work-from-home days when required. Candidates must be willing to attend late meetings at least once a week to coordinate with the rest of our team in Palo Alto.

Interview process

After submitting your application, the team reviews your statement of exceptional work and CV. If your application passes this stage, the interview process is as follows:

  1. Initial technical screening during which a member of our team will ask some basic technical questions (15 minutes)
  2. Coding interview (45 minutes)
  3. Distributed System Design interview (45 minutes)
  4. Final stage with founding engineer Toby Pohlen (30 minutes)

All interviews will be conducted via Google Meet.

Benefits

Base salary is just one part of our total rewards package at xAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to our Aviva pension plan, short & long-term disability insurance, life insurance, and various other discounts and perks.

Privacy Policy

xAI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.

Apply on company site

How to Get Hired at xAI

  • Tailor your resume to mirror xAI's exact job description language — Greenhouse filters on keywords, and terms like 'Member of Technical Staff,' 'LLM,' 'inference optimization,' or 'DCM' must appear verbatim where they match your experience
  • Restructure every resume bullet to lead with speed and measurable impact — xAI's culture rewards velocity, so '4 weeks' and '10x improvement' speak louder than vague descriptions of responsibilities
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