Are you looking for an exciting new opportunity? Join a fast-growing, Series A technology company building the next hyperscaler for AI agents, delivering a cloud platform where AI applications can create and run other software at scale. The business is already trusted by 88% of Fortune 100 companies, supports over 1 million monthly downloads, and has powered almost 300 million sandbox environments, reflecting rapid adoption and real-world impact. This highly technical role sits at the heart of the core product, with responsibility for designing and optimising secure, isolated, and ultra-high-performance cloud runtimes. Backed by over $32M in funding, this is a rare opportunity to help define the foundational infrastructure shaping the future of AI development. Apply today! Responsibilities: • Design and build the core E2B backend and cloud infrastructure powering AI software creation. • Work directly with VM hypervisors (Firecracker, gVisor) and Linux systems to build high-performance runtimes. • Develop and optimize sandboxes for LLMs and implement secure, isolated networking solutions. • Shave off every millisecond by monitoring resources and optimizing sandbox performance at scale. • Solve complex distributed systems challenges, leveraging Kubernetes or Nomad for orchestration. • Collaborate closely with Distributed Systems Engineers and work directly with users. Skills/Must have: • 5+ years of experience in Golang, Python, and TypeScript. • 5+ years building and operating infrastructure at scale, specifically distributed systems. • 5+ years of Linux administration with deep knowledge of internals (kernel, namespaces, networking, containers). • Experience working with VM hypervisors (Firecracker, gVisor) or similar container runtimes. • Experience with Kubernetes or Nomad. • Proactive, detail-oriented, comfortable taking ownership, and excited to work in person from San Francisco. Benefits: • Opportunity to build the next hyperscaler platform for AI agents from the ground up. • Significant freedom and ownership (taking projects from 0 ? 1) in a Series A startup with strong funding ($32M+ raised). • Work on challenging problems related to ultra-low latency and secure sandboxing. • Join a high-growth environment with customers like Perplexity and Hugging Face. Salary: • $180,000 - $250,000 + Equity