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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # AI Infrastructure Engineer, Sandbox Platform - **Company:** Scale AI - **Location:** London, UK - **Experience:** Experienced - **Salary:** £79,498.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), C++ (Programming Language), Software Debugging, Memory Management, Linux Kernel, Quick EMUlator (QEMU), Secure Coding, Software Engineering, Software Systems, System Programming, Virtualization Technology, AI Infrastructure, Large Language Models, Multi-Agent Systems, Build Management, Containerization, Kubernetes, Free and Open-Source Software, Api Design, Docker - **Published:** July 26, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5815365254 ## About the Role * 4+ years of experience building high-performance systems software, with meaningful time spent maintaining libraries, SDKs, or developer-facing APIs * Deep understanding of Linux internals: process isolation, memory management, cgroups, namespaces, etc. * Experience with containerisation and virtualisation technologies (e.g., Docker, Firecracker, gVisor, QEMU, Kata Containers) * Proficiency in a systems programming language such as Go, Rust, or C/C++ * A track record of obsessing over developer experience - API design, error propagation, documentation, and the small details that make a library feel well-crafted * Comfort working across infrastructure layers, from kernel modules to orchestration frameworks (e.g., Kubernetes) * Strong debugging skills and the ability to navigate performance/security tradeoffs in production systems * Comfort with ambiguity, and the ability to context-switch between reactive incident work and proactive product development * Experience as a founder or early engineer at an infrastructure-focused startup, owning a product end-to-end * Familiarity with LLM agents and agent frameworks (e.g., OpenHands, Agent2Agent, MCP) * Experience running secure workloads in multi-tenant or untrusted environments (e.g., FaaS, CI sandboxes, remote notebooks) * Exposure to snapshotting and restore techniques (e.g., CRIU, VM snapshots, overlays) * Open-source contributions to systems or developer-tools projects * History of on-call/incident response for production systems PLEASE NOTE: Our policy requires a 90-day waiting period before reconsidering candidates for the same role. This allows us to ensure a fair and thorough evaluation of all applicants. ## Description You'll combine deep systems expertise (isolation, virtualisation, performance) with an obsession for developer experience: clean APIs, clear error messages, good docs, and a client library that feels well-crafted. You'll partner closely with internal teams to understand how they use the platform, debug their issues, and shape a roadmap that balances immediate needs with long-term architecture. * Design and build the sandboxing platform, client library, and API surface for secure code execution across containerized and virtualized environments * Ensure strong isolation, security, and reproducibility of execution across user sessions and workloads * Optimise for cold-start latency, memory footprint, and resource utilisation at scale * Drive down error rates through systematic debugging, monitoring, and proactive fixes * Partner closely with internal teams using the platform to understand their needs, debug issues, and build tooling that serves their use cases * Respond to incidents and production issues with urgency, conducting root cause analysis and implementing preventive fixes * Help develop and maintain a product roadmap for sandboxing, balancing immediate needs against long-term architectural investment * Lead architecture reviews and own projects end-to-end, from design through deployment, in fast-paced cross-functional settings ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [API Design - Getting Started](https://www.wearedevelopers.com/videos/33-api-design-getting-started) - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Microservices: how to get started with Spring Boot and Kubernetes](https://www.wearedevelopers.com/videos/242-microservices-how-to-get-started-with-spring-boot-and-kubernetes) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this) - [From Prototype to Production: Build AI Agents with This Free 4-Course Learning Path](https://www.wearedevelopers.com/magazine/655-from-prototype-to-production-build-ai-agents-with-this-free-4-course-learning-path)