Overview

For roles based in London, your contractual place of work will be Stratford. The Stratford site is expected to become operational from November 2025 to March 2026; during the interim period you may be required to carry out duties from Vauxhall or another reasonable location. Note that Stratford will be your contractual place of work, and any subsequent moves from a temporary location will not entitle you to payments for travel time or costs under the Relocation and Excess Travel Policy.

We are recruiting a Senior Networks Infrastructure Engineer to work within the Targeted Interception (Domestic) Engineering team, part of the Specialist Operational Services function.

About the Role

The Specialist Operational Services (SOS) team operates within the wider DDaT Enterprise Services function and maintains NCAs’ most sensitive frontline IT services. The team includes IT professionals, law enforcement, and staff with a technology-focused mindset to deliver real world benefits for the UK. SOS ensures specialist services are fit for purpose, agile, delivered 24/7, and support the NCAs mission of protecting the public from serious and organised crime (SOC). The SOS function enhances intelligence collection, surveillance and digital forensics capabilities to support the Agency’s fight against SOC. It brings together Digital Forensics and Targeted Interception services, including international deployments. Additional teams and specialist services may join this Engineering function to meet evolving SOC threats.

Responsibilities

• Deliver 1st, 2nd and primarily 3rd line support of technical systems to a professional standard, adapting to and meeting user requirements.
• Maintain an in-depth knowledge of network protocols and install new network hardware, including patching of network elements.
• Work with Fortigate, CISCO and Dell hardware; maintain and upgrade systems in line with technical requirements for ICI.
• Ensure systems are accreditable by maintaining security designs and associated documentation (high and low level designs).
• Travel between sites is regularly required; a full, clean UK Driving Licence is essential.
• Be on an on-call rota as part of TI (Domestic) team responsibilities.
• Lead and contribute to project work; develop new technologies to meet requirements.
• Understand Interception principles at a basic level to support objectives.
• Provide infrastructure problem solving for network and server issues; mentor and upskill team members.
• Support the wider SOS team and provide briefing sessions and training material as needed.
• Assist in hardware specification, installation (racking and cabling), asset management, and licensing.
• Identify obsolescence early in the hardware lifecycle and ensure funding/approvals to avoid outages.
• Create and maintain technical designs (HLD/LLD) and ensure documentation accuracy.
• Research advances in technology to meet business requirements with innovative solutions.

Requirements and Qualifications

• 3rd line level expertise with network equipment including configuration and installation.
• Experience configuring and patching Fortigate, CISCO and Dell Firewalls and Switches; able to maintain network across multiple sites.
• Strong understanding of servers, storage systems, and virtualization; ability to configure operating systems and hardware.
• Ability to troubleshoot and fault-find network issues; effective communication of technical information.
• On-call readiness and flexibility to work in a fast-moving agile environment.
• Desirable: ITIL V3/V4 Foundation or higher; relevant certifications (e.g., MCP, VCP); degree in Computer Science or Information Systems; understanding of Interception of Telecommunications principles; Kubernetes knowledge.

Security and Eligibility

All successful candidates must meet the security requirements before appointment (developed vetting). See the vetting charter and baseline personnel security checks. This role requires nationality eligibility as described for Civil Service roles and related schemes.

Benefits and Working Arrangements

• Salary: £55,575 plus Civil Service Pension scheme contributions (£16,100).
• Annual leave: 26 days rising to 31 with length of service, plus 8 bank holidays; allowance adjustments for certain joiners.
• Flexible/hybrid working arrangements; family-friendly policies; learning and development opportunities.
• Interest-free loans and various workplace benefits (season tickets, childcare, rental deposits, etc.).
• Other employee benefits include housing schemes, discounts, staff networks, and Civil Service Sports Council membership.

Application and Selection

Applications will be assessed under the Success Profiles framework across Behaviours, Experience, and Technical Skills. A panel will review 250-word examples addressing network hardware configuration, patching, and multi-site fault-finding. On successful recruitment, a longlist may be used in high-volume campaigns. Shortlisting and assessment timelines are described in the advert. You will be asked to provide your full career history, training, qualifications, responsibilities and achievements, and explain any gaps in the last two years. You will be subject to vetting and pre-employment checks.

On-Call and Travel

On-call duties may be required on a 24/7 rota. An on-call allowance applies per policy. Travel between sites is regularly required; a valid UK driving licence is essential.