IT Core Systems Engineer
Application Deadline: 30 June 2026
Department: IT
Employment Type: Permanent – Full Time
Location: London
Description
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, datacentre 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.
Key Responsibilities
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 datacentre 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
Mandatory Experience
- 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
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