# Principal Software Engineer - Networking at Radiant

- Company: Radiant
- Status: Open
- Workplace: On-site
- Location: United Kingdom
- Level: Principal
- Discipline: Backend
- Employment: Full-time
- Posted: 2026-11-09
- Skills: network automation, GPU
- Apply: https://jobs.ashbyhq.com/radiant/d877ae10-0ed9-4b94-84e2-4c9e7c26bc6c

## Description

WHAT YOU'LL DO

As a Principal Software Engineer - Networking, you will help set the technical direction for Radiant's networking software, and lead the design and delivery of the systems that build, automate, and operate the fabric connecting our GPU clusters.

You'll work across high-performance cluster fabrics, network automation, Managed Networks, and multi-tenant isolation. You'll partner closely with product, infrastructure, SRE, storage, and security teams, and with customers whose workloads depend on the network.

This is a hands-on technical leadership role focused on making our networks fast, reliable, and fully software-driven, through architecture, code, and the standards other teams build on.

 


KEY RESPONSIBILITIES

 - Set the technical vision and architecture for Radiant's networking software, and lead its design and implementation.

 - Design and build the control plane that provisions, configures, and automates our cluster fabrics and Managed Networks.

 - Translate product and customer requirements into robust architectures, APIs, and technical designs, working closely with Product.

 - Own network performance, isolation, and reliability for AI training and inference workloads.

 - Lead integration of networking with compute, Kubernetes, storage, security, and observability.

 - Drive operational excellence with SRE and Infra Ops, including automation, monitoring, and incident response.

 - Raise the engineering bar across the organisation through mentoring, design and code review, and technical standards.

 


YOUR PROFILE

 - Extensive experience build

More Radiant roles: https://deviantjobs.com/companies/radiant