Level 3 Network Engineer

Experis - ManpowerGroup; Corsham; On-site; GBP 63,000 - 105,000; Full time

Job summary

Experis - ManpowerGroup is seeking a DV-cleared Level 3 Network Engineer for an onsite role in Corsham. The 6‑month contract may extend, with a daily rate up to £570 via an approved umbrella company.

You will support secure network infrastructure on a high-profile programme, handling L3 incidents, changes, and documentation. Required: strong LAN/WAN, routing, switching, firewall expertise and DV clearance eligibility.

Qualifications

• Experience in network engineering within enterprise or secure environments.
• DV clearance eligibility and willingness to go through DV clearance process.
• Strong documentation and communication skills.

Responsibilities

• Onboarding and offboarding network nodes across secure environments.
• Install, configure, deploy, and maintain network devices, firewalls, and supporting infra.
• Provide Level 3 support across LAN, WAN, and core network services.
• Assist with network design changes, upgrades and technical improvements.
• Investigate and resolve complex Level 3 incidents, problems and defects.
• Collaborate with third parties and stakeholders to implement service changes.
• Produce and update network design and technical documentation.
• Manage cryptographic devices within a secure environment.

Tools

Cryptographic devices

LAN/WAN

Routing

Switching

Firewall

Job description

Job Title: DV Cleared Level 3 Network Engineer
Location: Corsham (Onsite)
Duration: 6 Months with possible extension
Rate: Up to £570 per day via an approved umbrella company
Must be willing and eligible to go through DV clearance process

We are looking for an experienced Level 3 Network Engineer to join a high-profile secure programme supporting critical network infrastructure within a complex environment.

Key Experience:

• Onboarding and offboarding network nodes across secure environments
• Installation, configuration, deployment, and maintenance of network devices, firewalls, and supporting infrastructure
• Providing Level 3 support across LAN, WAN, and core network services
• Supporting network design changes, upgrades, and technical improvements
• Investigating and resolving complex Level 3 network incidents, problems, and defects
• Working closely with third parties, resolver groups, and key stakeholders to implement service changes
• Producing and updating network design and technical documentation
• Managing, configuring, and maintaining cryptographic devices within a secure environment

What You'll Bring:

• Strong experience in Network Engineering within enterprise or secure environments
• Expertise across LAN, WAN, routing, switching, and firewall technologies
• Experience supporting and troubleshooting complex network infrastructures
• Knowledge of network change, incident, problem, and defect management processes
• Ability to work with multiple stakeholders and technical teams to deliver network improvements
• Strong documentation and communication skills
• Experience working within highly regulated or defence environments would be advantageous

If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website.