Senior Noc Engineer

DXC Technology; England; On-site; GBP 65,000 - 90,000; Full time

Job summary

DXC Technology in Hampshire seeks a Senior NOC Engineer to deliver third-line network operations support for managed-services clients. You will act as technical authority, maintain network availability within SLAs, resolve complex incidents and mentor junior engineers within the ITIL framework.

The role requires active DV security clearance and UK residency, with a focus on routing, switching, firewall and SD-WAN expertise, plus strong analytical and communication skills.

Qualifications

• Minimum five years of network operations experience.
• Strong routing and switching knowledge (BGP, OSPF, VXLAN, MLAG, STP).
• Experience with enterprise firewall and SD-WAN (Fortinet FortiGate/FortiManager/FortiAnalyzer).
• Aruba LAN/WLAN experience (Aruba CX/Aruba Central/Aruba WiFi).
• Active DV security clearance required.

Responsibilities

• Provide third-line network operational support and act as senior escalation point for complex incidents.
• Maintain network operability within SLAs and lead analysis/resolution of complex issues.
• Provide reactive support for high-priority requests related to in-scope devices.
• Plan and deliver network changes and projects with PMs and stakeholders.
• Produce network configurations and complete testing for BAU changes; report results.
• Validate third-party configurations against standards; perform node-acceptance.
• Support node builds, equipment staging and patching; assist testing/verification.
• Follow ITIL change-management and service-management processes.
• Act as trusted technical authority for network implementations and decisions.
• Mentor junior engineers and promote knowledge sharing across the team.
• Keep stakeholders informed of status, incidents, risks and changes.
• Maintain network documentation and customer records; support CSIs.

Skills

Network operations

Troubleshooting

Routing & Switching

ITIL practices

Security clearance (DV)

Stakeholder communication

Education

Degree in Computer Science/Engineering

Vendor certifications (Aruba/Fortinet/Cisco CCNP)

Tools

Fortinet FortiGate/FortiManager/FortiAnalyzer

Aruba CX/Aruba Central

ServiceNow

SM9

Job description

Job Description:

Senior NOC Engineer

Location: Hampshire

DXC Technology is committed to building diverse, inclusive teams. We welcome applications from all backgrounds and particularly encourage interest from women, underrepresented groups, and neurodivergent candidates. We offer reasonable adjustments throughout the hiring process and are dedicated to creating a supportive, accessible environment for everyone.

Due to the nature of the work and the customers we support, the successful candidate must hold active DV security clearance and be eligible to meet UK Government and contractual personnel security requirements, including the applicable residency requirements for the role, and have the right to work in the United Kingdom. Some roles may also be subject to nationality requirements where these are necessary to meet UK Government or contractual security obligations.

As a Senior Network Operations Centre (NOC) Engineer, you will provide third-line network operational support for DXC's managed-service customers. Acting as a trusted technical authority and senior escalation point, you will maintain network availability within agreed SLAs, resolve complex incidents, deliver network changes and projects, validate configurations, and mentor

junior engineers within DXC's ITIL framework for incident, change and problem management.

Key Responsibilities:

• Provide third-line network operational support and act as the senior escalation point for complex incidents.
• Maintain network operability within agreed SLAs and lead the analysis and resolution of complex network issues.
• Provide reactive support for high-priority and short-notice requests relating to in-scope network devices.
• Plan and deliver network changes and projects in collaboration with project managers and stakeholders.
• Produce network configurations, complete testing for BAU changes, and prepare associated test reports.
• Validate third-party configurations against approved standards, including node-acceptance activities.
• Support the implementation, testing and verification of node builds, equipment staging and physical patching.
• Follow Project Enhancement Release, change-management and ITIL service-management processes.
• Act as a trusted technical authority for network implementations and operational decision-making.
• Mentor junior engineers, support incident response, and promote knowledge sharing across the team.
• Keep internal and external stakeholders informed of project status, incidents, risks and change requests.
• Maintain network configuration, design collateral, operational documentation and customer records.
• Support continual service improvement through standards, policies, procedures and technical governance.

What you'll bring:

• A minimum of five years of network operations experience, including hands-on third-line troubleshooting and fault resolution.
• Strong routing and switching knowledge, including BGP, OSPF, VXLAN, MLAG and STP.
• Enterprise firewall and SD-WAN experience, ideally with Fortinet FortiGate, FortiManager and FortiAnalyzer.
• Enterprise LAN and WLAN experience, ideally with Aruba CX, Aruba Central, Aruba WiFi, Mobility Master and ClearPass.
• Experience managing DNS, DHCP and IPAM services.
• Practical experience of network implementation, testing, verification and configuration validation.
• Strong working knowledge of ITIL practices and service-management platforms such as ServiceNow or SM9.
• Excellent analytical, problem-solving, written and interpersonal communication skills.
• The ability to manage multiple priorities and remain calm, methodical and accountable during major incidents.
• Active DV security clearance.

Desirable Skills:

• Network design experience and the ability to manage design collateral.
• Exposure to Microsoft Azure or cloud networking, Linux and Microsoft Visio.
• Previous network operations experience within secure or UK Government environments.
• A degree or diploma in Computer Science, Engineering or a related discipline.
• Relevant vendor certifications such as Aruba, Fortinet or Cisco CCNP-level certification, or equivalent.
• ITIL Foundation certification.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.