Senior Platform Engineer | Cloud, Security & Resilience Lead

A2Dominion Group; Greater London; Hybrid; GBP 75,000 - 110,000; Full time

Benefits offered by this job

25 days’ holiday (Plus Bank Holidays)

Up to 8% contributory pension

Annual health and lifestyle benefits £

Job summary

A2Dominion is seeking a Senior Platform Engineer in London (Ealing) to lead and evolve our enterprise technology platforms, balancing on-site attendance with hybrid work. You’ll own cross-domain platforms and ensure security, resilience and operational readiness.

You will collaborate with Architecture, Cyber Security, and vendors to deliver scalable cloud and identity services, including Azure and Microsoft 365, with IaC-driven automation and strong governance.

Qualifications

• Significant experience in senior infrastructure or cloud leadership roles.
• Experience owning and modernising enterprise platforms.
• Strong supplier-management and vendor-escalation experience.
• Proven ability to translate architecture into service readiness.

Responsibilities

• Act as the senior technical authority for assigned technology platforms, ensuring security and resilience
• Provide technical leadership across enterprise infrastructure, cloud, collaboration, identity and hybrid services
• Own the full lifecycle of technology platforms from implementation to retirement
• Lead design and improvement of complex solutions that are scalable and secure
• Translate architectural designs into reliable operational services
• Lead service acceptance and operational readiness for new services
• Provide governance for Azure, Microsoft 365, identity and SaaS integrations
• Drive automation and Infrastructure as Code practices
• Maintain secure platforms through patching and vulnerability remediation
• Lead resilience and disaster recovery tests
• Build relationships with suppliers and service providers
• Deputise for Infrastructure Manager when required

Skills

Senior infrastructure leadership

Cloud platform engineering

Technical leadership

Hybrid infrastructure expertise

Supplier management

Service management

Education

ITIL Foundation or equivalent service management qualification

Tools

Azure

Microsoft 365

VMware

Job description

A2Dominion is seeking a Senior Platform Engineer in London (Ealing) to lead and evolve our enterprise technology platforms, balancing on-site attendance with hybrid work. You’ll own cross-domain platforms and ensure security, resilience and operational readiness.

You will collaborate with Architecture, Cyber Security, and vendors to deliver scalable cloud and identity services, including Azure and Microsoft 365, with IaC-driven automation and strong governance.