Senior Platform Engineer

SR2 Clean Energy; Greater London; Hybrid; GBP 85,000 - GBP 100,000; Full time

Job summary

A cutting-edge AI startup in London is looking for a Senior Platform Engineer to take ownership of their cloud infrastructure. As the first platform engineering hire, you will collaborate with ML and Product teams to build scalable solutions. Ideal candidates will have deep experience with Kubernetes and AWS, along with strong infrastructure as code skills. The position offers up to £100,000, equity options, and a hybrid working model, ensuring flexibility and technical freedom.

Benefits

Competitive salary

Equity options

Pension scheme

Private health insurance

25 days holiday + bank holidays

Qualifications

• Deep AWS experience including EKS, IAM, VPC, EC2, and S3.
• Strong knowledge of Kubernetes operations and networking.
• Experience with Infrastructure as Code tools like Terraform.

Responsibilities

• Design, build, and operate Kubernetes-based platforms.
• Own the multi-cloud strategy ensuring reliability and security.
• Build reusable platform primitives for networking and CI/CD.

Skills

Kubernetes

AWS

Terraform

GitHub Actions

Docker

Prometheus

Job description

🚀 Senior Platform Engineer | AI & Cybersecurity | Up to £100,000 + Shares | London | Hybrid

Are you a platform engineer ready to take full ownership of maintaining and building infra and platform for a high-growth start-up?

This is a rare opportunity to join an early-stage, deep-tech company at the intersection of artificial intelligence and cybersecurity, working on technology that’s pushing the limits of how machines understand and analyse complex software systems.

You’ll be joining as the first platform Engineering hire, partnering closely with the ML and Product teams to design, build, and scale the infrastructure that powers advanced AI models.

🔧 What You’ll Be Doing

• Design, build, and operate Kubernetes-based platforms across AWS and additional cloud providers.
• Own and evolve our multi-cloud strategy, ensuring consistency, reliability, and security across environments.
• Build reusable platform primitives for networking, secrets, storage, ingress, observability, and CI/CD.
• Enable repeatable, automated deployments for SaaS, customer-managed, and air-gapped environments.

💡 What We’re Looking For

• Kubernetes: Production-grade clusters, networking, ingress, storage, RBAC, upgrades, and operations.
• Cloud: Deep AWS experience (EKS, IAM, VPC, EC2, S3, Load Balancing); multicloud patterns a strong plus.
• Infrastructure as Code: Terraform (or equivalent) for repeatable, auditable environments.
• CI/CD: GitHub Actions or similar; building pipelines for both SaaS and self hosted deployments.
• Containers: Docker/OCI, image build pipelines, registries, supply chain security.
• Observability: Prometheus, Grafana, ELK/OpenSearch, OpenTelemetry.

🌟 Why You’ll Love It Here

• Build something from – huge ownership and technical freedom
• Join a smart, curious team tackling truly unique technical challenges
• Competitive salary (£100,000)
• Equity options, pension scheme, and private health insurance
• Hybrid working – central London
• 25 days holiday + bank holidays

If you’re excited by the idea of shaping a Platform Engineering function in a cutting-edge AI startup and working on problems that most companies haven’t even begun to tackle, we’d love to hear from you.