Member of Technical Staff - Infrastructure

Job description

ABOUT STEEL Steel is building open-source browser infrastructure for AI agents and apps. We make it easy for developers to ship AI products that interact with the web using our Sessions API https://docs.steel.dev/overview/sessions-api/overview. With over 7,000 GitHub stars, dozens of paying customers, and millions of sessions served monthly, we grew our platform 50x in 2025 purely through word-of-mouth and our open-source community. Backed by world-class investors, we're building a small, highly motivated, and talent-dense team that's shaping the future of how humans interact with the internet. More on the problems we're solving: https://docs.steel.dev/overview/intro-to-steel Public referral bonus: Introduce us to a candidate who joins Steel, and we'll send you $10,000 THE ROLE We are looking for strong engineers with experience and interest in designing, building, and maintaining the high-performance systems that make up our platform. SAMPLE PROJECTS INCLUDE... - Building VM snapshotting that restores full browser state in under a second - Staring at kernel traces to performance engineer our Sessions API - Orchestrating millions of browser sessions across regions with sub-second cold starts - Working with VMs, proxies, caches, task queues, and orchestration systems - Shipping the observability and CI/CD stack from scratch REQUIREMENTS: - 4+ years writing high-quality, production code - Experience building and operating high-performance, large-scale distributed systems (battle scars welcome) - Strong cloud infrastructure skills (AWS, GCP) - Strong knowledge of OS foundations - Linux kernel, file systems, containers, etc - Track record in performance optimization (we love a good "shaved 5ms" story) - Able to work in-person from our Toronto office - Rust experience is a plus, not a requirement APPLYING If there appears to be a fit, we'll reach to schedule 2-3 short technicals. After, we'll schedule an onsite in our office, where you'll work on a small project, discuss ideas, and meet the team.