Software Engineer - Sandbox Service
Software Engineer - Sandbox Service

Software Engineer - Sandbox Service

Full-Time 36000 - 60000 ÂŁ / year (est.) No home office possible
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At a Glance

  • Tasks: Build and maintain secure, scalable systems for AI models in a fast-paced environment.
  • Company: Join xAI, a cutting-edge tech company on a mission to enhance human knowledge with AI.
  • Benefits: Enjoy competitive salary, equity, comprehensive health coverage, and retirement plans.
  • Why this job: Dive into deeply technical work and make a real impact in AI development.
  • Qualifications: Expertise in Rust, C++, or Go; familiarity with Python and strong Linux/Windows skills.
  • Other info: Flat organisational structure with opportunities for hands-on contributions and career growth.

The predicted salary is between 36000 - 60000 ÂŁ per year.

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 and 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

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++.

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.

Software Engineer - Sandbox Service employer: xAI

At xAI, we pride ourselves on being an exceptional employer that fosters a culture of innovation and collaboration in the heart of Greater London. Our flat organisational structure empowers employees to take initiative and contribute directly to our mission, while our commitment to professional growth ensures that every team member has access to meaningful development opportunities. With competitive benefits including comprehensive health coverage, equity options, and a supportive work environment, xAI is the ideal place for passionate software engineers looking to make a significant impact in the AI landscape.
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Contact Detail:

xAI Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Software Engineer - Sandbox Service

✨Tip Number 1

Get to know the company culture! Research xAI and understand their mission. When you show that you’re genuinely interested in what they do, it’ll set you apart from the crowd.

✨Tip Number 2

Practice your technical skills! Brush up on Rust, C++, or Go, and be ready to tackle coding challenges. We recommend doing mock interviews with friends or using online platforms to simulate the real deal.

✨Tip Number 3

Prepare questions for your interviewers! This shows you’re engaged and curious about the role. Ask about the team dynamics or the tech stack they use – it’ll help you stand out as a proactive candidate.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining the xAI team!

We think you need these skills to ace Software Engineer - Sandbox Service

Rust
C++
Go
Python
Linux Systems
Windows Systems
Virtualization Technologies
Containerization Technologies
Networking Stack
Resource Scheduling
Filesystem Performance Tuning
Strong Communication Skills
Problem-Solving Skills
Initiative
Work Ethic

Some tips for your application 🫡

Show Your Passion for Tech: When writing your application, let your enthusiasm for technology shine through! We love candidates who are curious and eager to tackle challenges, so share any personal projects or experiences that highlight your passion for software engineering.

Tailor Your CV: Make sure your CV is tailored to the role. Highlight your experience with Rust, C++, or Go, and don’t forget to mention any familiarity with Python. We want to see how your skills align with what we’re looking for, so be specific!

Craft a Strong Statement of Work: Your statement of exceptional work is your chance to stand out! Use this space to showcase your achievements and how they relate to the Sandbox service team’s mission. Be concise but impactful – we want to know what makes you exceptional!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining our team at xAI!

How to prepare for a job interview at xAI

✨Know Your Tech Stack

Make sure you brush up on your knowledge of Rust, C++, and Go. Be ready to discuss your experience with these languages in detail, as well as any projects you've worked on that showcase your skills. This is your chance to shine, so prepare some examples that highlight your technical expertise!

✨Understand the Sandbox Service

Familiarise yourself with the concept of sandboxing and how it applies to AI systems. Research xAI’s Sandbox service and be prepared to discuss how you would approach building and maintaining secure, scalable systems. Showing that you understand their mission will set you apart from other candidates.

✨Practice Coding Interviews

Since you'll face coding interviews in Rust or C++, practice common algorithms and data structures in these languages. Use online platforms to simulate the interview environment and get comfortable solving problems under time constraints. The more you practice, the more confident you'll feel during the actual interview!

✨Communicate Clearly

Strong communication skills are key for this role. During the interview, make sure to articulate your thought process clearly when answering questions. Don’t hesitate to ask clarifying questions if you need them. Demonstrating your ability to share knowledge concisely will show that you're a great team player!

Software Engineer - Sandbox Service
xAI
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  • Software Engineer - Sandbox Service

    Full-Time
    36000 - 60000 ÂŁ / year (est.)
  • X

    xAI

    50-100
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