Senior DevOps Engineer

Radiant; United Kingdom; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Annual leave 25d

Private medical insurance

Cycle to Work

Gympass

Company shares

Parental leave

Job summary

Radiant is seeking a Senior DevOps Engineer in the United Kingdom to embedded within a product team. You will own how the team builds, tests, ships, and runs its software, collaborating closely with platform engineers, SRE, and Infra Ops.

You will own CI/CD pipelines, infrastructure-as-code, monitoring, incident response, and on-call duties to ensure fast and safe software delivery. This role emphasizes practical ownership, collaboration, and building scalable AI infrastructure.

Qualifications

• Solid experience in DevOps, platform, or SRE roles.
• Strong CI/CD and infrastructure-as-code experience (e.g. Terraform, Ansible, GitHub Actions).
• Kubernetes and containers in production.
• Scripting or coding skills, ideally in Go or Python.
• Calm and methodical in incidents.

Responsibilities

• Build and run CI/CD pipelines and release processes.
• Automate infrastructure and environments as code.
• Improve monitoring, alerting, and incident response.
• Make it fast and safe for engineers to ship.
• Take part in on-call and incident response.

Skills

Solid experience in DevOps/Platform/SR

CI/CD & IaC (Terraform, Ansible, GitHk

Kubernetes & containers in production

Scripting in Go or Python

Tools

Terraform

Ansible

GitHub Actions

Job description

What You'll Do

As a Senior DevOps Engineer, you will be embedded in one of our engineering teams, not in a central team, owning how that team builds, tests, ships, and runs its software.

You'll work day to day with the team's software engineers, and closely with platform engineers, SRE, and Infra Ops.

The teams

• Infra
• Network
• Cloud
• Observability
• MLOps

Key Responsibilities

• Build and run CI/CD pipelines and release processes.
• Automate infrastructure and environments as code.
• Improve monitoring, alerting, and incident response.
• Make it fast and safe for engineers to ship.
• Take part in on-call and incident response.

Your Profile

• Solid experience in DevOps, platform, or SRE roles.
• Strong CI/CD and infrastructure-as-code experience (e.g. Terraform, Ansible, GitHub Actions).
• Kubernetes and containers in production.
• Scripting or coding skills, ideally in Go or Python.
• Calm and methodical in incidents.

What You Bring

• Automation instinct: If you do it twice, you automate it.
• Engineering quality: Write clean, tested, maintainable code, and review others' work with care.
• Ownership: Take features from design through production, and stay accountable for how they run.
• Pragmatism: Ship what matters, simply, and improve it from real-world feedback.
• Collaboration: Work openly with product, infrastructure, SRE and customers, and share what you learn.

Qualities we look for:

• Set the standard: Every single day, you spot opportunities to constructively shake things up
• Inspire the change: There's no blueprint for the future. You'll embrace challenges and change
• You're real and you're true to yourself: We cherish and celebrate diversity so you'll feel right at home whoever you are and whoever you're talking to, you treat everyone the same.

Why should you join us?

What sets us apart is our blend of modern technology, competitive benefits, and an open, welcoming work culture that enables our people to thrive.

Here are just some of the great things you can expect from us:

• 25 days of annual leave
• A culture that emphasises results over hierarchy, process & ego: we place great emphasis on the quality, ingenuity and creativity of work.
• Open communication, regular feedback: we value smooth collaboration, direct and actionable feedback, and believe that leading with empathy and a growth mindset makes us better together.
• Learning Time: we all have dedicated learning time to focus on new skills, projects or interests that lay outside of your day-to-day job.
• Health & Wellbeing: we want everyone to feel healthy and happy, so we offer private medical insurance via Bupa.
• Cycle to Work Scheme: we're committed to building a sustainable business, so we encourage cycling to work.
• Gympass subscription to a variety of gyms and wellbeing apps
• Participation in the company shares program
• Enhanced parental pay & leave

Our process: Talent screen → Hiring Manager → Technical interview (two engineers) → Final. 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, we're building this organisation from the ground up. We're looking for people who'd rather build the playbook than inherit one - who are comfortable doing the work themselves as well as directing others, and who can adapt as fast as our strategy does. This is a startup model: attitude and adaptability matter more to us than years of experience or the size of the team you've previously managed.