Senior Network Engineer

Fujitsu; Stevenage; On-site; GBP 70,000 - 95,000; Full time

Benefits offered by this job

Pension up to 10%

Life assurance

Incentive plans

Flexible benefits

Employee discounts

Employee assistance program

Annual leave 26 days

Job summary

Fujitsu Limited in the United Kingdom is seeking an experienced Senior Network Engineer to join a collaborative, multi-disciplinary team. You will own complex network incidents, drive changes, and support secure, high-availability infrastructure across locations in the country.

The role emphasizes technical leadership, documentation, and mentoring for junior engineers, with exposure to Juniper and Cisco platforms, ITIL practices, and secure network design.

Qualifications

• Proven experience in a network engineering role within secure/enterprise IT.
• CCNA or CCNP with practical background.
• Hands-on Juniper and Cisco experience (JNCIA/JNCIS/JNCIP preferred).
• Experience with virtualization and automation technologies.
• Familiarity with ITIL-aligned service management.
• Exposure to CATAPAN or similar secure network platforms.

Responsibilities

• Act as senior escalation point for complex network incidents from detection to resolution.
• Lead change management activities including impact assessments and emergency changes.
• Support deployment, patching and lifecycle management of network infrastructure.
• Deliver complex service requests and projects, including upgrades.
• Produce and maintain high-quality network diagrams, HLDs/LLDs and KBAs.
• Provide coaching and technical leadership to Network Engineers.
• Drive continual service improvement for resilience, security, and supportability.

Skills

Juniper

Cisco

CCNA/CCNP

Virtualization

Automation

ITIL

CATAPAN

Secure network design

Incident resolution

Tools

CATAPAN

Job description

Location Flexibility: Multiple Locations in Country

Posting Start Date: 11/4/26

At Fujitsu, our purpose is to make the world more sustainable by building trust in society through innovation. Founded in Japan in 1935, Fujitsu has been a pioneer in technology and innovation for decades. Today, as a world-leading digital transformation partner, we are committed to transforming business and society in the digital age.

With approximately 130,000 employees across over 50 countries, Fujitsu offers a broad range of products, services, and solutions. We collaborate with our customers to co-create solutions that drive enterprise-wide digitalization while actively working to address social issues and contribute to the United Nations Sustainable Development Goals (SDGs).

You will join a collaborative, multi-disciplinary team operating in a secure environment, working closely with internal stakeholders and third-party suppliers. This role is ideal for an experienced network engineer who enjoys solving complex problems, taking ownership of issues, and influencing technical standards and best practice.

Your role will involve:

• Acting as a senior escalation point for complex network incidents, owning issues through to resolution and coordinating with third-party suppliers
• Leading and contributing to change management activities, including impact assessments, implementations, and emergency changes
• Supporting the deployment, patching, and lifecycle management of network infrastructure to ensure security, stability, and performance
• Delivering complex service requests and project work, including upgrades, enhancements, and new network capabilities
• Producing and maintaining high-quality network documentation, including diagrams, HLDs, LLDs, KBAs, and work instructions
• Providing people management, coaching and mentoring to Network Engineers, supporting their performance, development and career progression. Providing technical leadership and knowledge sharing to strengthen capability and encourage continuous development across the team
• Identifying and driving continual service improvement opportunities to enhance network resilience, security, and supportability

Your transferable skills and experience:

• Proven experience operating in a network engineering role within a secure or enterprise IT environment
• Strong hands-on experience with Juniper and Cisco technologies
• Solid understanding of secure network design, support, and troubleshooting, including complex incident resolution
• Experience producing and maintaining documentation, including diagrams, HLDs, LLDs, and formal work instructionsli>
• Ability to work collaboratively across teams, suppliers, and stakeholders, acting as a trusted technical advisor
• CCNA or CCNP (or equivalent practical experience)
• Experience of Juniper, ideally JNCIA/JNCIS, or JNCIP.
• Experience with virtualisation and automation technologies
• Familiarity with ITIL-aligned service management environments
• Exposure to CATAPAN or similar secure network platforms

26 Days annual leave plus public holidays (3 flexible)

Pension - Double matching contributions of up to 10%

Life assurance

Companywide incentive plans

Your choices (Flexible benefits such as increased holidays/ travel/ dental critical illness and more)

Perks at work – employee discounts

Employee assistance programme/ virtual GP

Recruitment process

The recruitment process consists of one stages of interviews.

We are a Disability Confident Employer and will offer an interview to disabled applicants who meet the minimum/essential criteria for the role.

Achieve together

We are recognised as a responsible and inclusive employer:

Not only are we a certified Disability Confident Leader , a Times Top 50 employer for Gender Equality, a Top 75 employer for Social Mobility, accredited with the Living Wage Foundation and a signatory for the Race at Work Charter, but we are also committed to the United Nations standards for LGBTI+ and a Stonewall Top 100 Employer.

We are people centric:

Our work environments enable you Be Completely You. Our active people-led Inclusive Community networks are representative of all aspects of diversity and are instrumental in enabling and supporting our innovative approach to inclusion.

#DNS

At Fujitsu, we are committed to an inclusive recruitment process that values the diverse backgrounds and experiences of all applicants. We believe that hiring people from a wide variety of backgrounds makes us stronger, not because it's the right thing to do, but because it allows us to draw on a wider range of perspectives and life experiences.