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Experiencedenergy

Principal Software 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 Software Engineer, you will help set the technical direction for a core part of Radiant's AI cloud, joining one of four teams: Infra & Cluster, Observability, MLOps Training, or MLOps Inference. We'll match you to the team that fits your experience.

You'll lead the design and delivery of the distributed systems that run GPU infrastructure and AI workloads at scale, partnering closely with product, infrastructure, SRE, networking, and storage teams, and with customers running the most demanding workloads.

This is a hands-on technical leadership role, delivered through architecture, code, and the standards other teams build on.

The teams

- Infra & Cluster: provisioning, lifecycle, and cluster management behind our Bare Metal and Virtual Machine products

- Observability: FlightDeck, our platform for observing and operating AI infrastructure, and the telemetry behind it

- MLOps Training: the platform customers use to train models on our GPU clusters, including Managed Kubernetes and Managed Slurm

- MLOps Inference: the platform customers use to serve models in production

KEY RESPONSIBILITIES

- Set the technical vision and architecture for your team's area, and lead its design and implementation.

- Design and build distributed systems that run reliably on GPU infrastructure at scale.

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

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

Job inventory

Required 6 items

Skills and tools: Go, Python, Kubernetes, Linux, Kafka, PyTorch

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