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Radiant

Designs and manufactures portable, mass-produced nuclear microreactors.

Union Square Ventures

radiantnuclear.com ↗

Jobs Hiring Closed Discussion

Company facts

Founded: 2020
Employees: 384
Headquarters: United States
Type: Private
Funding: Series D · $300M · 2025

19 jobs

Posted Sort

19 jobs Posted Sort

Engineering Manager

Open 78d HybridUKFull-timeMiddle

Leads a ~9-person engineering stream (infrastructure, platform, or AI training/inference) building and operating Radiant's vertically integrated AI cloud platform — owning people, delivery, and production. Hands-on technical leadership across cloud infrastructure, Kubernetes, distributed systems, and GPUs.

AI API Automation Cloud Cloud Native +9 skills

DevOps Engineer

Open 101d HybridUKFull-time

Radiant is hiring a DevOps Engineer in London to own the design, delivery, and reliability of its infrastructure — CI/CD pipelines, cloud and bare-metal environments, and a Kubernetes orchestration layer supporting high-performance AI and GPU workloads. The core stack includes GitHub Actions, Terraform, Ansible, Helm, Python/Shell, and Go services with a strong observability and automation focus.

AI Ansible Automation Bash CI/CD +17 skills

Senior SDET

Open 106d HybridUKFull-timeSenior

Radiant is hiring a Senior SDET in London to build Go-based test automation frameworks for cloud-native backend systems and APIs powering AI workloads like LLMs and GPU services. Day to day: API, integration, performance and Kubernetes/Helm testing, plus mentoring and driving quality best practices.

AI API Automation CI/CD Cloud +17 skills

Senior Backend Software Engineer

Open 128d HybridUKFull-timeSenior

Radiant is hiring a Senior Backend Software Engineer in London to design Go backend services powering its AI infrastructure — GPU orchestration, inference-serving systems, and platform APIs. The role involves building Kubernetes Operators, gRPC/REST services, and mentoring engineers across squads without direct reports.

AI API Authentication Automation CI/CD +9 skills

Principal Backend Software Engineer

Open 128d HybridUKFull-timePrincipal

Hands-on principal engineer designing and building Radiant's AI cloud backend in Go — GPU orchestration, inference-serving infrastructure, and core platform APIs on Kubernetes — while leading architecture reviews, setting technical standards, and mentoring engineers across squads.

AI API Automation CI/CD Cloud +13 skills

Senior Infrastructure Engineer

HybridUKFull-timeSenior

Senior engineer on Radiant's Platform team who architects, builds, and operates an AI-native cloud platform — virtualisation, bare-metal provisioning, Kubernetes, high-performance networking/storage, security hardening, and observability — so teams can run HPC and AI/ML workloads reliably at scale. Core stack: Kubernetes, Terraform, Ansible, Go, Python, Linux.

Agile AI Ansible Automation BGP +28 skills

Senior/Principal Product Manager - Observability

HybridUKFull-timePrincipal

At Radiant, a Brookfield-backed AI infrastructure company in London, this Senior/Principal Product Manager owns the strategy, roadmap, and delivery of the observability platform and customer-facing telemetry — metrics, logs, traces, alerting, and dashboards — across GPU, Kubernetes, networking, storage, and platform services.

AI API Cloud Datadog Distributed Systems +13 skills

Senior/Principal Product Manager - Cluster Platform

HybridUKFull-timePrincipal

Owns the product experience and lifecycle for bringing new AI infrastructure clusters onto Radiant's platform — onboarding, validation, benchmarking, provisioning and automation — partnering with infrastructure, SRE, networking, storage and hardware teams. A highly technical role spanning GPUs, Kubernetes/Slurm, RDMA fabrics, distributed storage and observability.

Acceptance Criteria AI Automation Cloud Ethernet +12 skills

Cluster Architect

Open 109d RemoteUKFull-time

Design and deploy GPU-native AI supercomputers, creating low-level hardware and datacenter blueprints while collaborating with vendors and engineering teams to turn designs into production-grade systems.

Acceptance Criteria AI Cloud C++ CUDA +13 skills

Senior/Principal Product Manager - MLOps

Open 17d HybridUKFull-timePrincipal

Owns the strategy, roadmap and delivery of Radiant's MLOps and ML platform services on its GPU-powered neocloud — defining training, fine-tuning, deployment, inference and monitoring products. Partners with engineering on GPU orchestration, Kubernetes, storage/networking and developer tooling (APIs, SDKs, CLIs).

AI API Automation Cloud Developer Experience +20 skills

Senior/Principal Product Manager - Storage

Open 17d HybridUKFull-timePrincipal

Senior/Principal Product Manager owning the strategy, roadmap, and delivery of Radiant's cloud storage portfolio (object, block, and file storage) for demanding AI and cloud workloads. Day to day: translating customer needs into requirements, APIs, and service levels while partnering with engineering on storage architecture, performance, resilience, and integrations with Kubernetes, IAM, and obser

AI API Cloud Distributed Systems GPU +7 skills

Principal Infrastructure Engineer

Open 38d HybridUKFull-timePrincipal

A principal-level engineer who architects and builds Radiant's AI-native cloud platform: designing virtualisation, bare-metal lifecycle, Kubernetes, high-performance storage/networking, security hardening, and observability to power GPU/HPC AI workloads at global scale, using Terraform, Ansible, Go, and Python.

Agile AI Ansible Automation BGP +28 skills

Senior Technical Writer

Open 44d HybridUKFull-timeSenior

About our team: Radiant is redefining how AI infrastructure is built. We design and operate AI-native infrastructure platforms engineered for sovereignty, performance, and scale — powering GPU-native workloads,…

AI API Api Documentation Authentication Automation +14 skills

Senior/Principal Product Manager - Operations

Open 44d HybridUKFull-timePrincipal

About our team: Radiant is redefining how AI infrastructure is built. We design and operate AI-native infrastructure platforms engineered for sovereignty, performance, and scale — powering GPU-native workloads,…

AI API Automation Cloud CMDB +18 skills

Infrastructure Tooling & Observability Engineer( UK)

Open 128d HybridUKFull-time

About Us We’re a fast-growing GPU-as-a-Service provider, delivering scalable, high-performance compute infrastructure purpose-built for AI and HPC workloads. Operating across global data centres, we run…

AI Anomaly Detection Ansible API Api Design +19 skills

HPC Infrastructure Site Reliability Engineer

Open 128d HybridUKFull-timeSenior

About Us We’re a fast-growing GPU-as-a-Service provider, delivering scalable, high-performance compute infrastructure purpose-built for AI and HPC workloads. Operating across global data centres, we run…

AI Ansible Automation Bash Corrective Action +25 skills

Platform Site Reliability Engineer

Open 128d HybridUKFull-time

About Radiant 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,…

AI Ansible API Automation Bash +20 skills

Infrastructure Site Reliability Engineer

Open 128d HybridUKFull-time

About Radiant 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,…

AI Ansible Automation Bash Cloud +22 skills

Senior Network Engineer

Open 128d HybridUKFull-timeSenior

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…

AI Ansible API Automation AWS +30 skills