Linux Infrastructure Engineer in London

About the Team Training Runtime designs the core distributed runtime that powers everything from early research experiments to frontier-scale model runs. We work on building robust, scalable, high performance components to support our distributed training workloads. Our priorities are to maximize the productivity of our researchers and our hardware, with the goal of accelerating progress towards AGI. Within Training Runtime, the Process Management team develops the distributed OS responsible for launching, coordinating, and supervising the large numbers of processes that make up modern training workloads. Our runtime sits beneath training frameworks and on top of research infrastructure, ensuring jobs run reliably across massive clusters while maintaining performance, stability, and observability. Success for us is measured by both system reliability and researcher velocity - enabling ideas to scale from experiments to production training runs. About the Role As a Training Runtime: Process Management Engineer , you will work on the software that ties thousands of computers together and exposes them as a unified system. This system has to serve individual researchers running multiple parallel experiments, as well as our largest training runs spanning 100’s of thousands and even millions of machines and accelerators. This requires easy to use, introspectable systems that can promote a fast debugging and development cycle, as well as relentless optimization for scale while maintaining stability and performance throughout. You will work primarily in Rust , building high-performance asynchronous systems with a strong emphasis on performance, correctness, and scalability. Working at this scale and at the frontier of AI development poses novel challenges. Out-of-the-box approaches often don’t work. The problems you will be working on are highly ambiguous and require strong design judgment as well as proficient execution to advance the state of our infrastructure. We’re loo

SpaceXAI’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 ROLE: The Sandbox service team at SpaceXAI 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. BASIC QUALIFICATIONS: 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 virtualisation and containerisation technologies (e.g., cgroups, KVM, gVisor, QEMU) Solid knowledge of the networking stack COMPENSATION AND BENEFITS: £107,000 -

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. As a Solutions Engineer, you'll serve as a trusted technical voice, guiding customers toward clarity, feasibility, and alignment on the end-to-end solution. Because Vanta is the platform our customers rely on to build and run their GRC programmes, this is a natural next step for GRC professionals, programme managers, auditors, and compliance practitioners who want to apply their domain expertise in a strategic, customer-facing pre-sales role. You’ll be an integral part of the Sales team, working to ensure technical fit and create innovative solutions for our customers. Your attention to detail, focused on customer needs, will ultimately improve retention and overall success. This role will be based from our London office or Dublin office with an office-centric hybrid schedule. The standard in-office days are Tuesday, Wednesday, and Thursday. GRC practitioners are especially encouraged to apply—whether you've managed GRC programmes in-house, audited them as an internal or external auditor, or helped customers meet their GRC programme needs at a GRC vendor, you'll bring exactly the customer empathy and domain fluency this role thrives on. What you’ll do as a Solutions Engineer at Vanta: Serve as a strategic sales partner, owning the technical relationship with prospects and customers. Strategic Discovery and Deal Qualification: Partner with Account Executives to uncover technical, operational, and business pain points, validating use cases and aligning solutions to measurable customer impact and urgency. Secure the Solution Win and Alignment: Validate technical feasibility, drive clarity on success criteria, and guide stakeholder

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. As a Solutions Engineer, you'll serve as a trusted technical voice, guiding customers toward clarity, feasibility, and alignment on the end-to-end solution. Because Vanta is the platform our customers rely on to build and run their GRC programmes, this is a natural next step for GRC professionals, programme managers, auditors, and compliance practitioners who want to apply their domain expertise in a strategic, customer-facing pre-sales role. You’ll be an integral part of the Sales team, working to ensure technical fit and create innovative solutions for our customers. Your attention to detail, focused on customer needs, will ultimately improve retention and overall success. This role will be based from our London office or Dublin office with an office-centric hybrid schedule. The standard in-office days are Tuesday, Wednesday, and Thursday. GRC practitioners are especially encouraged to apply—whether you've managed GRC programmes in-house, audited them as an internal or external auditor, or helped customers meet their GRC programme needs at a GRC vendor, you'll bring exactly the customer empathy and domain fluency this role thrives on. What you’ll do as a Solutions Engineer at Vanta: Serve as a strategic sales partner, owning the technical relationship with prospects and customers. Strategic Discovery and Deal Qualification: Partner with Account Executives to uncover technical, operational, and business pain points, validating use cases and aligning solutions to measurable customer impact and urgency. Secure the Solution Win and Alignment: Validate technical feasibility, drive clarity on success criteria, and guide stakeholder

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. As a Solutions Engineer, you'll serve as a trusted technical voice, guiding customers toward clarity, feasibility, and alignment on the end-to-end solution. Because Vanta is the platform our customers rely on to build and run their GRC programmes, this is a natural next step for GRC professionals, programme managers, auditors, and compliance practitioners who want to apply their domain expertise in a strategic, customer-facing pre-sales role. You’ll be an integral part of the Sales team, working to ensure technical fit and create innovative solutions for our customers. Your attention to detail, focused on customer needs, will ultimately improve retention and overall success. With this role being specific to support our DACH Market account teams and customers, having full German Language proficiency is a must for this successful candidate. This role will be based from our London office with an office-centric hybrid schedule. The standard in-office days are Tuesday, Wednesday, and Thursday. GRC practitioners are especially encouraged to apply—whether you've managed GRC programmes in-house, audited them as an internal or external auditor, or helped customers meet their GRC programme needs at a GRC vendor, you'll bring exactly the customer empathy and domain fluency this role thrives on. What you’ll do as a Solutions Engineer at Vanta: Own the technical relationship with our commercial prospects/customers Develop a deep understanding of our product capabilities, integrations, configurations messaging, partner ecosystem, and competitive landscape. Listen carefully to prospects and clients to provide market feedback to the product te

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. As a Solutions Engineer, you'll serve as a trusted technical voice, guiding customers toward clarity, feasibility, and alignment on the end-to-end solution. Because Vanta is the platform our customers rely on to build and run their GRC programmes, this is a natural next step for GRC professionals, programme managers, auditors, and compliance practitioners who want to apply their domain expertise in a strategic, customer-facing pre-sales role. You’ll be an integral part of the Sales team, working to ensure technical fit and create innovative solutions for our customers. Your attention to detail, focused on customer needs, will ultimately improve retention and overall success. With this role being specific to support our DACH Market account teams and customers, having full German Language proficiency is a must for this successful candidate. This role will be based from our London office with an office-centric hybrid schedule. The standard in-office days are Tuesday, Wednesday, and Thursday. GRC practitioners are especially encouraged to apply—whether you've managed GRC programmes in-house, audited them as an internal or external auditor, or helped customers meet their GRC programme needs at a GRC vendor, you'll bring exactly the customer empathy and domain fluency this role thrives on. What you’ll do as a Solutions Engineer at Vanta: Own the technical relationship with our commercial prospects/customers Develop a deep understanding of our product capabilities, integrations, configurations messaging, partner ecosystem, and competitive landscape. Listen carefully to prospects and clients to provide market feedback to the product te