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Experiencedenergy

Principal Platform Engineer

Radiant · United Kingdom

Posted Nov 9, 2026 · full time

Est. total comp~$153K–$242K

Apply on Radiant's site ↗

From the posting

WHAT YOU'LL DO

As a Principal Platform Engineer, you will help set the technical direction for the platform one of our engineering teams builds on: the infrastructure, tooling, and automation that let us run GPU clusters, Kubernetes, and our managed services reliably at scale.

You'll partner closely with software engineers, SRE, Infra Ops, and the other platform engineers across Radiant.

This is a hands-on technical leadership role focused on making the platform reliable, secure, and easy to build on, through architecture, code, and the standards other teams build on.

The teams

- Infra: the platform behind provisioning and cluster management

- Network: the platform behind our fabrics and Managed Networks

- Cloud: the platform behind our Virtual Machines and console

- Observability: the platform behind FlightDeck

- MLOps: the platform behind training and inference

KEY RESPONSIBILITIES

- Set the platform architecture and roadmap for your team, and lead its design and implementation.

- Lead infrastructure-as-code, automation, and deployment at scale.

- Make environments reproducible, secure, and fast to change.

- Own the reliability and operability of the platform, with SRE and Infra Ops.

- Define standards for CI/CD, observability, and configuration across teams.

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

YOUR PROFILE …

Excerpt from Radiant's public job board. Read the full posting.

Job inventory

Required 9 items

Skills and tools: Go, Python, Kubernetes, Terraform, Ansible, CI/CD, Git, Linux, Networking

Preferred none listed in the text we have

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About this listing. Pulled automatically from Radiant's public job board and refreshed daily; closed roles are removed. Mars Mining Co. is not the employer, does not take applications and does not screen candidates. Field and level labels come from the job title and can be wrong.

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About the pay figures (~): These are estimates. Yearly figures are estimated total comp ranges: the employer's posted pay range, or, with no posted pay, the median to 90th-percentile BLS wage for similar jobs, plus typical benefits and bonus, without stock. Hourly figures for internships and contract roles are posted rates or BLS hourly wage ranges. Figures outside the U.S. and for loosely matched titles are rough ballparks. How we estimate