Senior Networks Engineer Infrastructure Operations - FCDO - SEO

Manchester Digital; Hanslope; On-site; GBP 48,000 - 54,000; Full time

Job summary

A leading technology firm in the United Kingdom is seeking a Senior Networks Engineer for Infrastructure Operations. You will be responsible for designing and implementing network solutions while overseeing a team of engineers. Ideal candidates should possess strong expertise in Cisco technologies and network protocols, with experience in secure environments. The role offers a competitive salary, generous benefits, and opportunities for professional development in a diverse and inclusive workplace.

Benefits

Competitive salary

Generous holiday entitlement

Civil Service Pension

On-site gym

Interest-free loans on travel

Training and development opportunities

Qualifications

• Experience in support and design in highly secure environments.
• Proficient with Network Protocols TCP/IP, BGP, ICMP, OSPF, IPSEC.
• Experience in Cisco ISE and PRIME.

Responsibilities

• Design, configure, and implement networking solutions based on business requirements.
• Oversee IT operations ensuring system resilience.
• Manage and mentor a team of engineers.

Skills

Cisco Switching

Routing

Security technologies

Wireless technologies

Network Protocols TCP/IP

Palo Alto Firewall administration

Knowledge of Virtual Environments (VMWare)

Tools

Cisco ASA Firewall

BIG IP F5 Administration

Job description

Senior Networks Engineer Infrastructure Operations - FCDO - SEO

Full-time (Permanent) £48,801 - £53,697 Plus location allowance £1750
Published on 18 December 2025 Deadline 11 January 2026

Location

Hanslope, South East England, MK19 7BH

About the job

Job summary

You would be expected to have ability to design, configure and implement as to the business requirements. Able to work effectively under pressure to deadlines, with rapidly changing priorities and workloads.

You’ll work closely with project managers, developers, incident, and problem managers, as well as external suppliers, translating technical terminology and building trusted relationships. Whether optimising systems, escalating service issues, or producing high and low-level documentation, you’ll communicate clearly and with authority– all while maintaining your own professional growth, keeping pace with the latest technologies and best practices

As a senior network engineer you would be expected to have a good working knowledge of the following network technologies:

Network Protocols

Cisco Switching, Routing, Security and wireless technologies

Knowledge of Virtual Environments and virtual network solutions, (i.e. VMWare, Azure)

Oversee IT operations that protect millions

A natural-born leader, you’ll help develop a team of engineers – from setting direction, to coaching individuals, and driving high performance. Balancing people management with hands-on technical work, you’ll manage and prioritise day-to-day tasks while ensuring requirements are met and incidents are resolved quickly. Where issues are complex or unprecedented, you’ll bring your expertise and initiative to find solutions that stick.

You’ll work closely with project managers, developers, incident, and problem managers, as well as external suppliers, translating technical terminology and building trusted relationships. Whether optimising systems, escalating service issues, or producing high and low-level documentation, you’ll communicate clearly and with authority.

Always looking for ways to improve, you’ll spot patterns, address recurring issues, and recommend process enhancements that raise the standard of technical services. You’ll mentor junior colleagues, share your expertise, and support senior engineers when needed – all while maintaining your own professional growth, keeping pace with the latest technologies and best practices.

Bring your technical expertise to support essential public operations

You’re confident working in secure, complex environments and bring a strong background in networking and infrastructure. From firewalls to cloud platforms, you’re comfortable designing, configuring, and supporting solutions that keep systems resilient.

Detail matters to you. Whether you’re managing protocols or troubleshooting across networks, you’ll bring precision and reliability to everything you do. You’re also comfortable producing documentation, reporting on key performance measures, and sharing your knowledge with others. Adaptable, proactive, and always developing your skills, you’ll bring both technical expertise and leadership to everything you do.

The support you need to grow your career

Working with us, you’ll help keep people, information, and assets safe around the world. It’s a role you can feel proud of, and we aim to make every part of your career just as rewarding. That’s why when you join us, expect to receive a competitive salary, generous holiday entitlement and a Civil Service Pension. Along with this, you’ll also have access to training and other development opportunities to help grow your career with us. Our offices have an on-site gym, nursery, café, and restaurant, and we offer interest‑free loans on season tickets and bikes to help you get there. It's a great set of benefits made to support all you do and all you need.

All our employees have to be security cleared to the highest level, so you’ll need to undergo a comprehensive vetting process before joining. Some of these roles require SC and some will require DV vetting. You can find out more about vetting on our website. And if you have a specific preference you can outline this on your application form. You can find out more about vetting at fcdoservicescareers.co.uk/how-to-apply/

It takes a diverseteam to protect a diverse world

The vital work we do takes an incredible community of colleagues, with different skills, backgrounds, cultures, and identities. We support every individual, so that you always know you’re welcome and valued. It’s what makes us a Disability Confident employer. And why we’re recognised as a ‘Carer Confident’ workplace. And it’s how you know you’re joining an inspiring, inclusive organisation.

Candidates who are judged to be close to meeting the criteria may be considered for other positions in FCDO Services which may be at a lower grade, but have a potential skills match

Person specification

We are looking for people with:

• 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
• Palo Alto Firewall administration.
• Knowledge of Virtual Environments and virtual network solutions,(ie VMWare )
• Experience in Cisco ISE and PRIME
• BIG IP F5 Administration \ Configuration – LTM, ASM