Lead Engineer, Cloud Computing: Infrastructure & Operations, Azure

Lead Engineer Fulltime | £61,992.00 - £72,324.00 (dependent on experience) OSHQ
- Hybrid Join our Cloud Platform team as a Lead Engineer and help design, build, and evolve our Azure cloud platform, with Azure Landing Zones at its core. This is a hands-on leadership role where you'll play a key part in building a secure, scalable, and well-governed cloud foundation - one that helps our product teams move quickly, experiment safely, and deliver great outcomes for our customers.

You'll set the technical direction for our Azure platform, lead the evolution of our landing zones, and act as a trusted sounding board across engineering, security, and architecture. You'll work closely with a small, supportive team of Engineers and Senior Engineers, providing the platform that underpins our cloud-hosted systems and enables development teams to do their best work. If you enjoy combining deep technical expertise with mentoring, collaboration, and real-world impact, we want to hear from you.

Please note that due to the nature of this work - this role is conditional on holding or subsequently passing National Security Vetting SC Clearance prior to appointment.

• Own the design and evolution of Azure Landing Zones aligned to Microsoft Cloud Adoption Framework and enterprise good practices
• Define and enforce platform standards for networking, identity, security, governance, and cost management
• Build and maintain infrastructure as code (e.g. Bicep, Terraform) to deliver repeatable, self-service platform capabilities
• Own core Azure services including Management Groups, Subscriptions, Azure Policy, RBAC, networking (hub-and-spoke), and monitoring
• Embed security-by-design, including identity, zero trust principles, logging, and threat protection
• Partner with application and product teams to enable smooth onboarding onto the platform
• Act as a technical leader and mentor for other cloud platform engineers
• Influence cloud strategy and roadmap, balancing long-term architecture with pragmatic delivery
• Support platform operations, reliability, and continual improvement

• Strong experience as a Senior / Lead Cloud or Platform Engineer, ideally in Azure-first or Azure-centric environments
• Deep understanding of Azure core services, especially:
  Entra  (Azure AD), RBAC, Privileged Identity Management Management Groups, Subscriptions & Azure Policy Azure networking (vNets, hub-and-spoke, Private Endpoints, Firewalls, Express Route) Logging, monitoring, and cost management
• Strong theoretical knowledge and practical experience in Infrastructure as Code (Bicep, Terraform, ARM)
• Practical experience embedding cloud security and governance at scale
• Enjoy working collaboratively across engineering, architecture, and security
• Able to explain complex cloud concepts in clear, approachable ways to a wide audience

• Hands-on delivery of Azure Landing Zones in enterprise-scale environments
• Azure certifications such as AZ-104, AZ-305, AZ-400, AZ-500 & AZ-700
• Experience enabling CI/CD for platform services
• Experience in provisioning Virtual Machine images using Image Builder / Packer and Desired State Configuration to security harden them
• Knowledge of Enterprise Azure Policy as Code (EPAC)
• Familiarity with Fin Ops or cloud cost optimisation practices

• Proficient with source control systems and editors/IDEs
• Comfortable programming in a contemporary object-oriented language
• A solid grasp of cloud computing principles
• Passion for mentoring, learning, and sharing knowledge with others
• Curiosity and enthusiasm for keeping your skills up to date
• Thriving in an agile, collaborative environment

At OS, how we work matters just as much as what we deliver. Throughout our hiring process we will assess competence assessing alignment in how you:
Clear the path
- Cut the noise, simplify and remove blockers so work can move at pace Seek the story
- Listen fully, build understanding, fact-check assumptions and speak up Do what matters
- Focus on value, make deliberate stop/start/continue decisions, and recognise the contribution of others