Networks Engineer Infrastructure Operations - FCDO Services - SEO

Government Digital & Data; City of Westminster; On-site; GBP 45,000 - 65,000; Full time

Job summary

A government agency is seeking a Senior Network Engineer to lead IT operations and support essential public infrastructures. The ideal candidate will possess strong expertise in network technologies and a background in secure environments. Responsibilities include mentoring junior colleagues, designing solutions across firewalls and cloud platforms, and producing necessary documentation. This role offers a competitive salary along with generous benefits, including training and development opportunities.

Benefits

Competitive salary

Generous holiday entitlement

Civil Service Pension

On-site gym

Nursery

Café

Restaurant

Interest-free loans on season tickets

Interest-free loans on bicycles

Qualifications

• Experience in support and design in highly secure environments.
• Strong background in networking and infrastructure.
• Adaptable and proactive mindset with a focus on continuous improvement.

Responsibilities

• Lead and contribute to IT operations protecting systems and data.
• Mentor junior colleagues and support senior engineers.
• Design, configure and support solutions across firewalls, cloud platforms, networks.

Skills

Cisco Switching

Routing

Security

Wireless technologies

Network Protocols TCP/IP

Palo Alto Firewall administration

Cisco ASA Firewall Administration

Azure experience

AWS experience

Tools

VMware

BIG IP F5

PRTG

Cisco ISE

Cisco ACI

Job description

Overview

As a senior network engineer you would be expected to have a good working knowledge of the following network technologies: Cisco ASA, Palo Alto Firewalls, BIG IP (F5), Network Protocols, Cisco Switching, Routing, Security and wireless technologies. Knowledge of Virtual Environments and virtual network solutions (i.e. VMware, Azure). You’ll work closely with project managers, developers, incident and problem managers, as well as external suppliers, translating technical terminology and building trusted relationships. You’ll communicate clearly and with authority—optimising systems, escalating service issues, or producing high- and low-level documentation—while maintaining your own professional growth and keeping pace with the latest technologies and best practices.

Note: Any references to artificial intelligence, plagiarism, or third‑party content should be factual and based on your own experience. Follow applicable guidelines and policies for use of AI or external sources.

Responsibilities

• Lead and contribute to IT operations that protect systems and data, balancing hands‑on technical work with leadership responsibilities.
• Set direction, coach engineers, and drive high performance while prioritising day‑to‑day tasks and ensuring requirements are met and incidents are resolved quickly.
• Collaborate with project managers, developers, incident and problem managers, and external suppliers; translate technical terminology and build trusted relationships.
• Describe and document systems and procedures, producing high‑ and low‑level documentation.
• Identify patterns, address recurring issues, and recommend process improvements to raise the standard of technical services.
• Mentor junior colleagues and support senior engineers, while pursuing ongoing professional development.
• Design, configure and support solutions across firewalls, cloud platforms, networks, and infrastructure to maintain system resilience.
• Produce documentation, report on key performance measures, and share knowledge with others.
• Adapt to changing priorities and workloads, working effectively under pressure to meet deadlines.

Technical skills

• Experience in support and design in highly secure environments.
• Cisco Switching, Routing, Security and wireless technologies
• Network Protocols TCP/IP, BGP, ICMP, OSPF, IPSEC
• Cisco ASA Firewall Administration and design
• Cisco Firepower (NGFW)
• Palo Alto Firewall administration
• BIG IP F5 Administration Configuration - LTM, ASM
• Knowledge of Virtual Environments and virtual network solutions (e.g., VMware)
• Experience in Cisco ISE and PRIME
• Network Monitoring PRTG
• Cisco ACI
• Azure and AWS experience

Working environment

Bring your technical expertise to support essential public operations. You should be comfortable working in secure, complex environments and have a strong background in networking and infrastructure. From firewalls to cloud platforms, design, configure, and support solutions that keep systems resilient. Detail matters—manage protocols and troubleshoot across networks with precision and reliability. You’ll also be comfortable producing documentation and sharing knowledge with others. Adaptable, proactive, and focused on continuous improvement, you’ll bring both technical expertise and leadership to everything you do.

Benefits

It takes a diverse team to protect a diverse world. Our benefits include a competitive salary, generous holiday entitlement, and a Civil Service Pension. We offer training and other development opportunities to grow your career, and offices with on‑site gym, nursery, café, and restaurant. We also provide interest‑free loans on season tickets and bicycles.