Senior DevOps Engineer - AWS Platform at Scale

Collinson Group; Greater London; On-site; GBP 47,000 - 87,000; Full time

Job summary

Collinson Group is seeking a Lead DevOps Engineer to own the end-to-end reliability and security of a modern AWS platform at scale. You will oversee multi-region deployments, incident response, and cost optimization while guiding a growing team of engineers.

You will drive IaC and CI/CD standards using Terraform, Terragrunt and ArgoCD, and champion AI-assisted operations across CI/CD and runbooks. A strong emphasis on security, compliance and observability is required.

Qualifications

• Experience building and operating large-scale AWS platforms.
• Track record of end-to-end DevOps ownership and multi-region deployments.
• Strong CI/CD automation and fast, secure release cycles.

Responsibilities

• Own the end-to-end reliability, stability, performance, security posture and resilience of production platform.
• Enforce platform SLAs across availability, security posture and resilience, define incident response standards.
• Run and maintain multi-region, zero-downtime platform with deployment strategies and failover patterns.
• Own platform security controls including networking, IAM, KMS, secrets management, vulnerability management and compliance.
• Drive disaster recovery strategy, automation, execution and continuous improvement.
• Lead cost visibility, rightsizing, tagging and architecture decisions for TCO.
• Set and maintain Infra as Code and CI/CD standards using Terraform and Terragrunt.
• Own observability strategy using Datadog with SLO/SLA dashboards and alerting.
• Lead DevOps engineers through design reviews, mentoring and development.
• Lead adoption of AI-assisted operations across CI/CD, runbook automation and tooling.

Skills

AWS at scale

CI/CD automation

Python

Bash

Terraform

Terragrunt

ArgoCD

Istio

Kubernetes

Security & compliance

Datadog

GitHub Actions

Tools

Terraform

Terragrunt

ArgoCD

Istio

Ansible

Helm

GitHub Actions

Datadog

CrowdStrike

Rapid7

Kubernetes

Job description

Collinson Group is seeking a Lead DevOps Engineer to own the end-to-end reliability and security of a modern AWS platform at scale. You will oversee multi-region deployments, incident response, and cost optimization while guiding a growing team of engineers.

You will drive IaC and CI/CD standards using Terraform, Terragrunt and ArgoCD, and champion AI-assisted operations across CI/CD and runbooks. A strong emphasis on security, compliance and observability is required.