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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

37 jobs

Posted Sort

37 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

Principal/Staff Security Engineer

UKFull-timePrincipal

About Radiant 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 Firewall GPU ISO 27001 Kubernetes +4 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 Developer Relations

HybridUKFull-timeSenior

Radiant (backed by Brookfield) is hiring a Senior Developer Relations lead in London to own DevRel for its AI-native GPU cloud platform — creating technical content, demos, and reference implementations, engaging developer communities and events, and turning developer feedback into product improvements. Hands-on with Python, Kubernetes, containers, APIs/SDKs, and LLM workloads.

AI API Cloud Developer Advocacy Developer Experience +4 skills

Senior/Principal Product Manager - Security

HybridUKFull-timePrincipal

Radiant, a Brookfield-backed AI infrastructure company, is hiring a Senior/Principal Product Manager to own the strategy, roadmap, and delivery of security capabilities across its cloud platform — covering IAM, secrets, encryption, network controls, compliance, and automation — in close partnership with engineering, SRE, security, and customers.

AI API Automation Cloud Cloud Security +16 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

Vendor Manager

Open 29d RemoteUKFull-time

Role Profile 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…

AI Cloud Contract Lifecycle Management Corrective Action ERP +7 skills

People Operations Coordinator

Open 30d HybridUKFull-time

Job Title: People Operations Reports to: People Manager Location: London hybrid About Radiant Radiant is redefining how AI infrastructure is built. We design and operate AI-native cloud platforms engineered for…

Agentic AI AI Automation Cloud GPU +1 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 - Infrastructure

Open 17d 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,…

Acceptance Criteria AI Argo CD Cloud Cloud Native +14 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

Director, Social Media & Technical Communications

Open 102d HybridUKFull-timeSenior

About Radiant Radiant is looking for a senior social media and communications leader who can turn deep technical substance into public narrative, executive voice and market momentum. The right candidate is a…

AI Analytics Cloud Cybersecurity

GRC Analyst

Open 52d HybridUKFull-timeMiddle

About Radiant 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 Gdpr GPU ISO 27001 SOC 2 +1 skills

Group Reporting Manager

Open 52d HybridUKFull-time

Manager, Group Reporting About Radiant Radiant is redefining how AI infrastructure is built. We design and operate AI-native infrastructure platforms engineered for sovereignty, performance, and scale — powering…

AI Automation Financial Reporting GPU Revenue Recognition +1 skills