WINTEL Systems Administrator (Platform Manager)

  • Experis
  • Dec 18, 2025
Contractor Telecommunications

Job Description

DV Cleared WINTEL Systems Administrator (Platform Manager)
Location: London (On-Site)
Type: Contractor
Start Date: Jan 2026
End Date: TBC
Must be eligible and willing to go through high level security clearance


Our client, a reputable organisation supporting local government, is hiring for a dedicated WINTEL Systems Administrator (Platform Manager) to join a busy, professional team. This is an exciting opportunity to contribute to a critical live service network, supporting a range of hosted applications and ensuring seamless operations.

What you'll be doing:
Maintain and support a Windows-based Live Service Network, including hosted applications.
Provide Level 3 support and troubleshooting to resolve complex issues efficiently.
Follow established configuration and change management policies to ensure smooth updates and modifications.
Assist in maintaining network security across departments.
Document processes, procedures, and work instructions to ensure clarity and compliance.
Keep accurate records of network components, maintenance activities, and inventory using appropriate databases.
Offer technical on-call support on a rotational basis (out of hours, 1 week in 3).

What you'll bring:
Strong knowledge of Windows systems and network fundamentals.
Experience running and maintaining a monthly security patching process.
PKI knowledge to support secure communications.
Ability to work well under pressure, prioritise critical tasks, and escalate incidents when needed.
Excellent team player with a proactive approach to problem-solving.

Desired skills and experience:
Understanding of handling sensitive information and maintaining a document library.
Experience running environment checks and maintaining network security protocols.

Working pattern:
Monday to Friday, with out-of-hours support on a 1 week in 3 basis.

Ideal candidates will be:
Passionate about supporting and improving network environments.
Confident in troubleshooting and providing technical support remotely and on-site.
Committed to working collaboratively in a fast-paced environment.

If you're ready to make a difference and work on a vital network supporting diverse end users, this is your chance to shape your world and the way the world works. Apply now to join a dedicated team delivering impactful solutions.