At a Glance
- Tasks: Build and maintain secure, scalable systems for AI models in a fast-paced environment.
- Company: Join xAI, a mission-driven tech company focused on engineering excellence and innovation.
- Benefits: Competitive salary, equity, comprehensive health coverage, and retirement plan.
- Other info: Dynamic team culture with opportunities for hands-on contributions and career growth.
- Why this job: Make a real impact by working on cutting-edge AI technology and systems.
- Qualifications: Expertise in Rust, C++, or Go; familiarity with Python and strong systems knowledge.
The predicted salary is between 75600 - 92400 £ per year.
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 engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.
About the team
The Sandbox service team at xAI builds and maintains a secure, scalable system that gives our models safe, controlled access to computational environments. This infrastructure powers critical workloads across training and product, enabling models to run code, build software, interact with tools, and even control applications with user interfaces. We provision containers and virtual machines on large‑scale clusters, granting models interactive control over these remote environments. Our work spans the full stack: from orchestrating massive jobs and resource scheduling at the cluster level, to fine‑tuning filesystem performance on nodes. The Sandbox service enables Grok to safely run and test code in real‑time for user queries, and supports reinforcement learning in training, where models interactively explore tools ranging from compilers to productivity apps.
About the role
Expect deeply technical work in a fast‑moving environment. We prioritize speed and rapid iteration without compromising on reliability or performance. Ideal candidates have strong backgrounds in at least the following:
- Expert knowledge of Rust, C++ or Go
- Familiarity with Python
- Deep experience with either Linux or Windows systems (familiarity with both is a strong plus)
- Experience with virtualization and containerization technologies (e.g., cgroups, KVM, gVisor, QEMU)
- Solid knowledge of the networking stack
Interview process
After submitting your application, the team reviews your statement of exceptional work and CV. If your application passes this stage, you will be invited to a 15 minute interview (“phone interview”) during which a member of our team will ask some basic technical questions. If you clear the initial phone interview, you will enter the main process, which consists of at least two technical interviews:
- Coding interview in Rust or C++
- Distributed systems design interview
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 a 401(k) retirement plan, short & long‑term disability insurance, life insurance, and various other discounts and perks. xAI is an equal opportunity employer.
Member of Technical Staff - Sandbox Service employer: Pantera Capital
At SpaceXAI, we pride ourselves on being an exceptional employer that fosters a dynamic and inclusive work culture. Our team members enjoy comprehensive benefits, opportunities for professional growth, and the chance to make a meaningful impact in user safety while working alongside talented professionals across various disciplines. Located in a vibrant area, our employees benefit from a collaborative environment that encourages innovation and resilience in the face of challenges.
