US Infrastructure & Operations Technical Lead

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About this role

US Infrastructure & Operations Technical Lead US East Coast Role Overview We are seeking a US Infrastructure Operations Technical Lead to drive the operational excellence, technical leadership, and growth of Radiant's US Infrastructure Operations function. This is a hands-on player-manager role designed for an infrastructure-focused engineering leader with a strong Site Reliability Engineering mindset and deep understanding of large-scale distributed infrastructure environments. Working closely with the UK Infrastructure Operations Manager during overlapping morning hours (US Eastern Time), you will help coordinate cross-regional operations, strategic planning, incident management, and infrastructure delivery across Radiant's global AI and HPC platform. During US business hours, you will lead and mentor the local Infrastructure Operations team, currently consisting of three engineers, while helping scale operational maturity and team capability as the business continues to grow. The ideal candidate will come from a hyperscale, HPC, or large-scale cloud-native SaaS infrastructure background, with experience operating complex distributed systems at scale. This role requires breadth across datacentre compute, Linux systems, networking, and storage fabrics, with the ability to troubleshoot and lead continuous improvement of our infrastructure. You should be comfortable operating and troubleshooting bare-metal environments, low-latency networking, storage protocols, and core infrastructure technologies underpinning high-performance AI and GPU compute platforms. This role requires strong operational leadership capabilities, including experience running small engineering teams, participating in ITIL-aligned operational processes, and supporting high-availability production environments through structured incident, change, and problem management practices. You will also participate in an on-call rota to lead major incidents, orchestrating technical resources to quickly

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