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Senior Network Engineer - Security-Cleared

Job in Aldermaston, Berkshire, RG7, England, UK
Listing for: Parker Shaw
Contract position
Listed on 2026-02-17
Job specializations:
  • Engineering
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below

We are currently recruiting for an experienced Senior Network Engineer to work a 12-month contract for our client 100% on-site in Aldermaston, Reading.

Essential:

  • Experience of support in a large and complex network environment at a Senior network engineering level
  • Good technical investigation and problem-solving skills.
  • Juniper Technologies: EX, QFX, switch configuration, SRX, vSRX Firewall and policy config, Junos Space, Security Director, Apstra.
  • Experience in IT service management and delivery based on ITIL service management standards.
  • Experience working with Juniper Virtual Chassis and Clustering technology
  • Experience with configuring/troubleshooting EVPN/VXLAN on Juniper equipment.
  • Experience of configuring GRE tunnels and Routing Instances/VRFs.
  • Experience of PKI/certificate generation and renewal.
  • Networking: strong routing skills (OSPF, BGP), Firewall configuration, WAN/LAN design, device clustering, high availability.
  • Juniper Technologies: EX, QFX, switch configuration, SRX, vSRX Firewall and policy config, Junos Space, Security Director, Apstra.
  • Security Platforms:
    Forti Gate, F5 BIG-IP (Load Balancing/AWAF), Pulse Secure/Ivanti, high-grade encryption.
  • Identity & Access Management:
    Cisco ISE (full life cycle), Windows NPS (RADIUS/802.1X).
  • Monitoring & Observability:
    Solar Winds, Splunk.
  • Core Network Services: IPAM, DHCP, DNS.
  • Effective communication with technical and non-technical stakeholders.
  • Ability to document processes and configurations clearly.
  • Willingness to work flexibly and to occasionally work evenings and weekends where exceptional circumstances require it.
  • Travel to remote sites when required which may involve overnight stays.
  • Part of on call rota.

Desirable:

  • Juniper and Cisco certification but experience is more important.
  • Ideally experience of working in a secure environment.
  • Data Centre experience advantageous.
  • Extreme Switch knowledge desirable.
  • Experience/certification with at least one of the major network vendors.

    - JNCIS-ENT, JNCIS-DC (preferably JNCIP-DC), JNCIA-SEC

If you feel you have the skills and experience needed for this role; please do apply now.

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Position Requirements
10+ Years work experience
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