US Infrastructure & Operations Technical Lead

📋 Job 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.

🏢 About Radiant

Radiant is a company operating cutting-edge GPU, AI, and high-performance compute infrastructure at scale. We are expanding our global footprint and seeking talented individuals to help shape the future of our US infrastructure operations.

🎯 The Role

As the US Infrastructure Operations Technical Lead, you will work closely with the UK Infrastructure Operations Manager during overlapping morning hours (US Eastern Time) to 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.

✅ Key Responsibilities

• Lead a small but high-impact US Infrastructure Operations team, owning both people leadership and technical execution
• Ensure 99.9%+ platform uptime across US-region services
• Act as the senior US operational owner for production infrastructure, accountable for reliability, incident outcomes, and day-to-day operational execution
• Partner tightly with the UK Infrastructure Operations Manager to align priorities, respond to incidents, and execute global infrastructure plans in real time
• Own US-side incident leadership, driving fast and effective resolution of production-impacting infrastructure issues
• Build and reinforce a strong ownership culture built on do, document, automate
• Ensure operational knowledge is captured and shared through lightweight, high-signal documentation rather than process overhead
• Hire, onboard, and develop Infrastructure Operations engineers as the team scales
• Run direct 1:1s and performance conversations focused on raising technical bar and operational effectiveness
• Ensure disciplined execution of core operational processes (incident, change, problem management) without slowing delivery
• Participate in on-call rotation and lead from the front during major incidents
• Willingness to travel within the US and Europe as required to support infrastructure deployments, data centre work, and cross-regional collaboration (UK-headquartered company)
• Help define how Infrastructure Operations scales globally as the company grows

📌 Required Qualifications

• Come from a hyperscale, HPC, or large-scale cloud-native SaaS infrastructure background
• Experience operating complex distributed systems at scale
• Breadth across datacentre compute, Linux systems, networking, and storage fabrics
• Ability to troubleshoot and lead continuous improvement of infrastructure
• Comfortable operating and troubleshooting bare-metal environments, low-latency networking, storage protocols, and core infrastructure technologies underpinning high-performance AI and GPU compute platforms
• Strong operational leadership capabilities, including experience running small engineering teams
• Participation in ITIL-aligned operational processes
• Supporting high-availability production environments through structured incident, change, and problem management practices

⭐ Desirable Experience

• Experience with advanced compute and networking technologies powering large-scale AI and machine learning workloads
• Collaboration with highly skilled engineers across Infrastructure Operations, HPC SRE, Networking, and Platform Engineering teams
• Environment that values technical excellence, ownership, and continuous improvement

🎁 Benefits

Exposure to industry-leading GPU and AI infrastructure
Opportunities to help build and scale a growing US operations function
A collaborative, inclusive, and globally connected engineering culture
Real ownership and influence across operational strategy and execution
Work at the intersection of reliability, automation, performance, and scale
A flexible remote-first working environment with ambitious growth plans

🛂 Visa & Eligibility

Willingness to travel within the US and Europe as required to support infrastructure deployments, data centre work, and cross-regional collaboration (UK-headquartered company)