Senior Information Technology Systems Administrator

Help power U.S. diplomacy as Senior IT Systems Administrator at the U.S. Embassy, London Croughton Annex!

Do you like solving complex problems on networks that need to stay secure?

The U.S. Mission to the United Kingdom is hiring a Senior IT Systems Administrator to join the Diplomatic Technology (DT) team at the U.S. Embassy, London Annex in Croughton, near Brackley, Northamptonshire.

This isn't a standard IT job. Your work will keep U.S. diplomacy running. You'll protect systems that people around the world rely on, and you'll support high-profile VIP and VVIP visits.

Why this role stands out

• Real technical ownership: Serve as a senior (Tier 2/3) expert and the person the team escalates critical issues to.




• Broad scope: Work across networks, cloud platforms, cybersecurity, mobile devices, voice systems, and audio-visual (A/V) and broadcast systems. No two days are the same.




• Global teamwork: Work with regional teams and Washington-based teams on network design, optimisation, and security projects.




• Leadership: Mentor junior staff, train colleagues in new skills, and manage IT projects, budgets, and equipment lifecycle planning.




• Mission impact: Provide dedicated IT support for VIP and VVIP visits and Mission events.

What you’ll do

• Design, install, configure, and maintain network infrastructure, including firewalls, security appliances, wireless systems, and voice/data cabling




• Administer user accounts and access across networks, cloud platforms, and communication systems




• Fix complex network and application problems for users




• Manage enterprise mobile devices and remote access solutions




• Lead software rollouts and assess new technology, including cybersecurity risk assessments




• Build reports, dashboards, and automation for ticketing systems




• Monitor system health and manage backup and recovery operations




• Support the Information System Security Officer (ISSO) on security compliance and monitoring

What you’ll bring

Experience and education (one of the following):

• 5+ years in computer networking operations, network management, or computer systems, plus a bachelor's degree in Computer Science, Information Systems, Electrical Engineering, Library and Data Science/Analytics, or Audio/Visual Communications and Technology




• OR 8+ years of the same experience plus completion of secondary school

Technical knowledge:

• Network protocols (LAN/WAN/WLAN), TCP/IP, the OSI model, and bandwidth management




• Routers, switches, firewalls, servers, and server administration




• Cybersecurity principles, encryption, VPN security, and network security architecture




• Cloud platforms and productivity suites (Microsoft 365 / Google Workspace)




• Risk management, performance monitoring, and data privacy principles




• Fluent English (speaking, reading, and writing)




• Ability to obtain and hold a U.S. Top Secret security clearance




• Strong communication skills and the ability to work well with people of different backgrounds, technical levels, and seniority

What we offer

• £60,081 per year, permanent appointment




• 22 days of annual leave plus 16 UK and U.S. public holidays




• Performance-related pay awards




• Private medical insurance and life insurance




• Season ticket loan for travel




• Training and professional development opportunities




• Employee Assistance Program




• Salary paid every two weeks

Location: Croughton (Brackley, UK)

Questions? Contact LNDRecruit@state.gov

The U.S. Mission provides equal opportunity and fair and equitable treatment in employment to all people without regard to race, color, religion, sex, national origin, age, disability, political affiliation, marital status, or sexual orientation.

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