Senior Software Engineer: Cloud Operating System

About this role

Company Overview:

Radiant is redefining how AI infrastructure is built.

We design and operate AI-native cloud platforms engineered for sovereignty, performance, and scale. Our infrastructure powers GPU-native workloads, multi-tenant control planes, and high-performance AI systems designed for the most demanding environments.

We are not building a generic cloud. We are building purpose-built AI infrastructure - from powered land, to compute, to software .

As we scale our platform and expand our engineering organisation, we are looking for leaders who can build strong teams, uphold high standards, and deliver reliably at pace.

Job Description

As a Senior Software Engineer at Radiant, you’ll be a hands-on technical leader, driving the design and development of our most critical systems, including our GPU orchestration layer, inference-serving infrastructure, and core platform APIs.

You’ll set the standard for engineering excellence across the team, working closely with other principal engineers to align on strategy and drive technical leadership. You’ll partner with peers in infrastructure and machine learning to deliver high-performance AI systems, and mentor engineers across multiple squads. While you won’t have direct reports, you’ll play a pivotal role in shaping engineering direction, design decisions, and cross-team collaboration.

What You’ll Do:

• Design and build core backend services in Go that power AI infrastructure, networking, inference orchestration, and model lifecycle management
• Implement secure, reliable APIs (gRPC/REST) and backend systems
• Contribute to architectural discussions, providing input on design reviews and system evolution
• Collaborate closely with platform and infrastructure teams to deliver production-grade, secure, and scalable services
• Maintain high standards for code quality, observability, and maintainability through reviews and best practices
• Identify and resolve performance issues, scaling challenges, o...