IT Core Systems Engineer

IT Core Systems Engineer

Final date to receive applications: 30 June 2026

Department: IT

Employment Type: Permanent - Full Time

Location: London

We are looking for an experienced Core Systems Engineer to help design, deliver, and support infrastructure platforms that are highly available, secure, and resilient.

This role is focused on infrastructure modernisation and project delivery, covering hybrid infrastructure, identity services, data centre operations, resilience, and platform improvement initiatives. You will play a key role in shaping the future direction of our core systems as we continue evolving towards a more modern, secure, and cloud-aligned technology estate.

While there is an element of BAU support and operational ownership, the role is primarily centred around delivering strategic infrastructure improvements and engineering-led projects.

Delivering projects to improve identity, infrastructure, and core systems architecture, following modern security and operational best practices.

• Leading infrastructure modernisation initiatives, including service migrations, platform improvements, and resilience enhancements
• Designing, implementing, and validating disaster recovery and failover solutions across core systems
• Owning and maintaining core infrastructure platforms across hybrid and data centre environments
• Supporting the business transition towards modern infrastructure and cloud-aligned services
• Producing and maintaining high-quality technical documentation, standards, and operational procedures
• Acting as an escalation point for complex 3rd line infrastructure issues where required
• Contributing to platform stability, security, scalability, and operational resilience across the wider estate

• Identity platform redesign, migration, consolidation, or security hardening initiatives
• Designing and testing disaster recovery and failover processes within production environments
• Delivering or contributing to security-focused infrastructure initiatives
• Supporting and improving enterprise infrastructure platforms across hybrid environments