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 mission-driven tech company focused on engineering excellence and innovation.
  • Benefits: Competitive salary, equity, comprehensive health coverage, and retirement plan.
  • Why this job: Make a real impact by working on cutting-edge AI technology and solving complex challenges.
  • Qualifications: Expertise in Rust, C++, or Go; familiarity with Python and strong Linux/Windows experience.
  • Other info: Dynamic team culture with opportunities for rapid career growth and hands-on contributions.

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. 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

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.

Interested in building your career at xAI? Get future opportunities sent straight to your email.

Software Engineer - Sandbox Service employer: x.ai

At xAI, we pride ourselves on being an exceptional employer that fosters a culture of innovation and collaboration. Our flat organisational structure empowers employees to take initiative and contribute directly to our mission of advancing AI technology, while our commitment to professional growth ensures that every team member has the opportunity to excel in their career. Located in a dynamic environment, we offer competitive benefits including equity, comprehensive health coverage, and a supportive atmosphere that values curiosity and engineering excellence.
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Contact Detail:

x.ai 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 its mission. Understanding their values will help you tailor your conversations during interviews and show that you're genuinely interested in being part of the team.

✨Tip Number 2

Practice makes perfect! Brush up on your coding skills, especially in Rust or C++. Use platforms like LeetCode or HackerRank to tackle coding challenges. This will prepare you for those technical interviews and boost your confidence.

✨Tip Number 3

Network, network, network! Connect with current employees on LinkedIn or attend tech meetups. Building relationships can give you insider info about the interview process and even lead to referrals, which can be a game-changer.

✨Tip Number 4

Don’t forget to 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 and ready to contribute to our mission.

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

Expert knowledge of Rust
Expert knowledge of C++
Familiarity with Go
Familiarity with Python
Deep experience with Linux systems
Deep experience with Windows systems
Experience with virtualization technologies
Experience with containerization technologies
Knowledge of cgroups
Knowledge of KVM
Knowledge of gVisor
Knowledge of QEMU
Solid knowledge of the networking stack
Strong communication skills
Strong prioritization skills

Some tips for your application 🫡

Show Your Passion: When writing your application, let your enthusiasm for AI and engineering shine through. We want to see that you're not just looking for a job, but that you're genuinely excited about contributing to our mission at xAI.

Tailor Your CV: Make sure your CV highlights your relevant experience with Rust, C++, or Go, as well as any work with virtualization and containerization technologies. We love seeing how your skills align with what we do, so don’t hold back!

Craft a Strong Statement: Your statement of exceptional work is your chance to stand out. Be concise but impactful—share specific examples of your achievements and how they relate to the role. We’re looking for candidates who can communicate their ideas clearly.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy to do!

How to prepare for a job interview at x.ai

✨Know Your Tech Inside Out

Make sure you brush up on your knowledge of Rust, C++, and Python. Be ready to discuss your experience with these languages and how you've used them in past projects. The more specific examples you can provide, the better!

✨Understand the Sandbox Service

Familiarise yourself with the concept of sandboxing and how it applies to AI systems. Knowing how the Sandbox service operates and its importance in providing secure environments for models will show your genuine interest in the role.

✨Show Off Your Problem-Solving Skills

During the coding interviews, focus on demonstrating your thought process. Don’t just jump to the solution; explain your reasoning and approach. This will highlight your analytical skills and ability to tackle complex problems.

✨Communicate Clearly and Concisely

Strong communication is key! Practice explaining technical concepts in a straightforward manner. This will not only help you during the interview but also show that you can effectively share knowledge with your future teammates.

Software Engineer - Sandbox Service
x.ai
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  • Software Engineer - Sandbox Service

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

    x.ai

    50-100
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