Lead Platform Engineer

Dex; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Dex's trusted partner company is seeking an experienced Platform/DevOps leader to architect and operate an Azure-based environment, including AKS, Terraform, and Dockerised services.

You will set technical direction, design CI/CD pipelines, and own end-to-end observability while preparing for SOC 2 and ISO 27001 audits and overseeing cloud cost at scale.

Qualifications

• 7+ years in platform, infra, or DevOps.
• Experience designing Terraform modules and CI/CD pipelines.
• End-to-end observability ownership, including incident practice.

Responsibilities

• Architect and operate a complex Azure footprint (AKS, Terraform, Dockerised services).
• Design and implement CI/CD pipelines shipping backend, frontend, and data.
• Set technical direction and guardrails for infra, pipelines, and observability.
• Own observability and incident response end-to-end.
• Prepare cloud estate for SOC 2 and ISO 27001 audits and manage cloud cost.

Skills

Platform experience

Terraform design

CI/CD pipelines

Observability ownership

Cloud networking

Python/Bash

Tools

Terraform

Docker

GitHub Actions

AKS

Job description

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

The role

This company builds the AI workspace that the world's largest banks and asset managers actually run inside their own environments. That means every deployment lands in a place where security review, audit trails, and uptime are non-negotiable. They're one of the fastest-growing enterprise AI platforms, backed by leading investors, with significant funding to scale.

You’ll lead the platform underneath it all: architecting and operating their Azure footprint across AKS, Terraform-managed cloud resources, Dockerised services, and the CI/CD pipelines. This isn’t just a hands‑on role; you’ll set the technical direction and guardrails for a 150+ person company selling into regulated institutions. Expect to own cloud cost, prepare for SOC 2 and ISO 27001 audits, and enable product engineers to ship at pace without weakening enterprise‑grade controls.

The work

• Architecting and operating a complex Azure footprint, including AKS, Terraform, and Dockerised services.
• Designing and implementing CI/CD pipelines (GitHub Actions equivalent) that ship backend, frontend, and data, with a focus on developer experience.
• Setting technical direction and guardrails for infrastructure, including Terraform modules, pipeline patterns, and observability practices.
• Owning end‑to‑end observability (logging, metrics, tracing, alerting, on‑call) and driving incident response.
• Preparing the entire cloud estate for rigorous SOC 2 and ISO 27001 audits, and managing cloud cost at scale.

What You Bring

• 7+ years in platform, infrastructure, or DevOps, including a period where you set technical direction.
• Experience designing Terraform modules and CI/CD pipelines that other engineers build on.
• End‑to‑end ownership of observability, including incident practice.
• Comfort with cloud networking (VPCs, private networking, DNS, load balancers, VPNs, firewalls) and provisioning production databases.
• Strong Python or Bash for automation.