Lead Platform Engineer

Dex; Greater London; On-site; GBP 110,000 - 160,000; Full time

Job summary

Dex partners with a leading enterprise to architect and operate a scalable Azure footprint across AKS, Terraform, and Dockerised services. You will design and implement CI/CD pipelines shipping backend, frontend, and data, with a focus on developer experience.

You will set technical direction and guardrails for infrastructure, observability, and cost management, ensuring readiness for SOC 2 and ISO 27001 audits.

Qualifications

• 7+ years in platform, infrastructure, or DevOps focused on technical direction.
• Experience designing Terraform modules and CI/CD pipelines used by other engineers.
• End-to-end ownership of observability (logging, metrics, tracing, alerting).
• Comfort with cloud networking (VPCs, DNS, load balancers, VPNs, firewalls) and production databases.
• Strong Python or Bash for automation tasks.

Responsibilities

• Architecting and operating a complex Azure footprint, including AKS, Terraform, and Dockerised services.
• Designing and implementing CI/CD pipelines that ship backend, frontend, and data, with a focus on developer experience.
• Setting technical direction and guardrails for infrastructure, including Terraform modules and observability practices.
• Owning end-to-end observability and driving incident response.
• Preparing the cloud estate for SOC 2 and ISO 27001 audits and managing cloud cost at scale.

Skills

Platform/DevOps experience

Observability ownership

Cloud networking

Python or Bash automation

Technical leadership

Tools

Terraform

CI/CD pipelines

AKS

Dockerised services

GitHub Actions

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.

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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