Windows Systems Administrator

Job title:

Windows Systems Administrator Role type:
Contract (12 months) Department:
Digital Workspace Group

Location:

London (Hybrid) Company overview

Nomura is a global financial services group with an integrated network spanning approximately 30 countries and regions. By connecting markets East & West, Nomura services the needs of individuals, institutions, corporates and governments through its three business divisions:
Wealth Management, Investment Management, and Wholesale (Global Markets and Investment Banking). Founded in 1925, the firm is built on a tradition of disciplined entrepreneurship, serving clients with creative solutions and considered thought leadership. For further information about Nomura, visit

Nomura is seeking a Windows Systems Administrator to join the Windows infrastructure sub-group of our Global Digital Workspace team and contribute to infrastructure support for the Nomura Group affiliate company Instinet Incorporated.

The Digital Workspace team provides engineering, maintenance and support for Instinet’s Windows, Active Directory and VMware systems, globally. This role is primarily focused on the team’s responsibilities involving server administration, Active Directory vulnerability patching, VMware infrastructure maintenance and other infrastructure services while other team members are assigned to focus on first level support for the desktop environment.

• Active Directory vulnerability management
  • Review vulnerabilities and available remedies
  • Assess interoperability in a heterogeneous environment including legacy systems
  • Manage deployment risk through log analysis, reporting and available controls
  • Deploy, verify and support security patch and other vulnerability remediation tasks
• VMware infrastructure support
  • Build, upgrade and patch VMware ESXi systems
  • Monitor and manage ESXi server capacity
  • Develop and maintain relevant documentation and runbooks
• Data Centre move projects
  • Collaborate across Digital Workspace and technology infrastructure teams to support work required to relocate Instinet infrastructure to new data centre locations.
• General Windows Server Systems Administration & Support
• Essential Microsoft 365 & Exchange Online support
  • Windows Server security patching
  • Capacity and configuration management
  • Installs, adds, changes and support
• This position is focused on developing and supporting our global Windows Server infrastructure with a focus in Active Directory Management, VMware, Support Escalation and After Hours Change Implementation. In this role you will be responsible for developing, implementing and supporting technology solutions delivered to Instinet’s corporate users and production Windows environment in a global teamwork environment.

• Active Directory Administration
  • Performing administrative tasks in a multi-domain environment
  • User & Computer Administration
  • Group Policy management & troubleshooting
  • Experience managing AD Sites & Services
  • Working knowledge and understanding of DNS & DHCP
• VMware
  • Experience building, upgrading and managing ESXi v7.0, 8.0 and vCenter
  • Experience managing VMware services and features including SRM, DRS and Update Manager
  • Performance monitoring and alerting
• General Windows Server Systems Administration
  • Deployment, management & support for Windows Server 2012, 2019+ systems.
  • Windows Server patching
  • Technical support for issues escalated from internal support groups and development teams
  • Experience supporting a production environment, with change control procedures and after hours implementation
• Work Request Fulfilment
  • Experience using a service-based ticketing system (e.g. Jira Service Desk, Service Now, etc.)
  • Windows File System Management (e.g. Access Control Lists, DFS, File Share Management)

• Citrix Xen Desktop / Citrix Virtual Apps & Desktops
  • Citrix Director
  • VDA installation, configuration and troubleshooting
  • Knowledge of Citrix Net Scaler ADC and ADM
• Office 365
  • Exchange Online administration
  • Mailbox creation & user management
  • SMTP header analysis and related messaging technologies
• Mobi…