Field Service Engineer -

Field Service Engineer (permanent) – Defence / National Security technology

An established UK engineering and technology organisation supporting defence and national security customers is hiring a Field Service Engineer to provide hands-on support for deployed systems across UK sites. This is an on-site role, typically based around Surrey and Hampshire, with frequent customer-site activity.

What you’ll be doing

• Carry out preventative and corrective engineering visits (sometimes at short notice): patching, updating, auditing and repairing customer systems/products.
• Support military exercises, demonstrations, testing and customer acceptance testing for new deliveries.
• Deliver operator/maintainer training when required.
• Provide remote 1st/2nd line support when issues are logged.
• Join an on-call 24/7 rota (1 week on / 3 weeks off) with potential requirement to attend site at short notice.
• Install, configure and maintain Windows Server environments (2016/2019/2022).
• Support infrastructure and networking: firewalls (hardware/software), virtualisation (VMware ESXi / Hyper-V), LAN/WAN/VLAN.
• Complete structured fault-finding and root cause analysis (down to board/component level where needed) and produce clear technical documentation (fault reports, RMAs, conformance paperwork, etc.).

What we’re looking for

• Degree or HND/HNC in an engineering discipline (or equivalent practical experience).
• Strong background supporting hardware + IT infrastructure in a military/defence context (MoD exposure).
• Electronic Warfare experience is highly desirable
• Comfortable working across different security classifications and in regulated, low-volume/high-value environments.
• Solid troubleshooting mindset and calm under pressure (especially during on-call and exercise support).
• Full UK driving licence and willingness to travel.