Lead Platform Engineer

Dex; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Dex partners with leading enterprises to empower AI infrastructure. This role sits at a partner company building scalable cloud platforms with stringent security, audit trails, and governance.

You will own end-to-end platform operations in Azure, driving reliability, performance and cost efficiency. You’ll design Terraform modules and CI/CD pipelines, own observability end-to-end, manage incidents, and prepare the cloud estate for SOC 2 and ISO 27001 audits while guiding technical direction for

Qualifications

• 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.

Responsibilities

• 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.

Skills

DevOps leadership

Terraform modules

CI/CD pipelines

Observability ownership

Cloud networking

Python or Bash

Tools

Terraform

GitHub Actions

Docker

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.

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.