Senior IT Systems Administrator

Benefits

Additional Information

Hands-on, multi-tasking role covering the full lifecycle of predominantly Windows Server environments: installation, upgrades, configuration, administration, and ongoing maintenance. Lead local and remote office projects end-to-end, from initiation through delivery and handover. Support and maintain bespoke trading application infrastructure: provisioning, patching, upgrading, and environment management. Manage vendors and service providers, coordinating effectively with internal business and technology teams. Provide coverage during core hours, with an expectation of additional out-of-hours support as required, including occasional weekend work. Business-as-usual (BAU) 3rd line support, with flexibility to deliver 1st and 2nd line support depending on team structure and operational demand. Occasional travel to remote office locations may be required. 8+ years' experience in a comparable systems/IT infrastructure role. BSc in Computer Engineering (or related discipline) and/or current relevant IT certifications. Strong Windows Server administration skills (Windows Server 2016+); Server Core experience is an advantage. Strong VMware ESXi and vCenter administration experience (v7.0+), including managing and executing upgrade cycles. Hands-on expertise with Veeam backup solutions. Solid administration of Active Directory Domain Services, including DNS, DHCP, and Group Policy. SQL Server installation, configuration, and administration. Experience with Centreon monitoring. Strong Citrix experience: XenApp & XenDesktop 7.x, NetScaler ADC, Citrix Studio/Director; Citrix DaaS is a plus. Good working knowledge of Exchange Server 2016+, including mailbox administration, retention policies, message troubleshooting, and SMTP relay configuration. Experience with NetApp storage (FAS and E-Series), including NFS/CIFS protocols. Ability to improve team efficiency by automating repetitive tasks (e.g., PowerShell, Python, Power BI)-a plus. Experience managing the Microsoft patching lifecycle, deploying server patches via SCCM; strong SCCM knowledge preferred. Broad understanding of global network topology (e.g., DMZ, load balancing, firewalls, VLANs). Practical data center experience (hardware racking, cabling/patching, HPE iLO configuration). Familiarity with Microsoft 365 services, including Azure AD. Nutanix knowledge is advantageous. Personal Competences: Strong user/customer focus, committed to delivering a great support experience. Highly responsive, energetic, and enthusiastic, with a proactive approach. Flexible availability, willing to work extended hours when needed, with a 24/7 support mindset. Demonstrates sound judgment and excellent attention to detail. Excellent communication skills, both written and verbal, with the ability to engage stakeholders clearly. Solutions- and results-driven, able to troubleshoot pragmatically and deliver outcomes. Structured, rigorous, and methodical in execution and documentation. Comfortable working independently as well as collaboratively within a team. A genuine team player with an open, non-political style and high personal integrity.

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