Mainframe System Administrator Jobs in London

Applications are considered on a rolling basis LondonHybridJob DescriptionWere AmTrust International an insurance business headquartered in London with offices across the UK and employing more than 1900 people in 13 countries. As part of a global group we work creative...

Institutional Fabric for the Digital Asset MarketFounded in 2018 Talos provides institutional-grade trading technology for the global digital asset market powering many of the major players in the crypto ecosystem. Our mission is clear: to advance the mass adoption of digital assets by seamlessly co...

Role/Skill: Mainframe System Administrator/Mainframe Infrastructure Expert Job Descriptions: Mainframe z/OS Admin responsible for managing IBM z/OS operating system In-depth knowledge of IBM z/OS operating systems and infrastructure Mainframe technical sustainment experience (i.e. zOS version upgra...

DescriptionDeadline Date: Monday 6 April 2026Requirement: System Administrator (Standing Naval Forces)Location: Northwood UKFull Time On-Site: Yes Time On-Site: 100%Total Scope of the request (hours): 836Required Start Date: 1 July 2026End Contract Date: 31 December 2026 Required Security Clearance:...

DescriptionDeadline Date: Friday 3 April 2026Requirement: System Administrator (Standing Naval Forces)Location: Northwood UKFull Time On-Site: Yes Time On-Site: 100%Total Scope of the request (hours): 1115Required Start Date: 11 May 2026End Contract Date: 31 December 2026 Required Security Clearance...