Lead Platform Engineer

Company: Dex
Apply for the Lead Platform Engineer
Location: London
Job Description:

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.

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Posted: October 24th, 2026