Firewall Security Engineer

Syntax Consultancy Ltd; England; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A consultancy firm is seeking a Firewall Security Engineer for a 3-month contract in Warwick. The role requires active SC Security Clearance and in-depth experience with F5 firewalls, alongside Checkpoint or Juniper firewall skills. Most work is remote, with occasional onsite travel to customer sites. The engineer will own the network security infrastructure and act as the technical contact for related projects. Competitive pay of £380/day (Outside IR35) is offered.

Qualifications

• Active SC Security Clearance is essential for this contract.
• In-depth experience with F5, Checkpoint, or Juniper firewall security skills.

Responsibilities

• Technical ownership of the Network Security Infrastructure estate.
• Acting as the technical point of contact for all Network Security projects.
• Designing customer networks and managing technical support.

Skills

F5 firewalls

Checkpoint firewall

Juniper firewall

Tools

Cisco Networking

SSL VPN

Job description

Firewall Security Engineer (F5, Checkpoint, Juniper)

3 Month Contract

Warwick (Hybrid)

£380/day (Outside IR35)

Firewall Security Engineer needed with active SC Security Clearance and in-depth experience of F5 firewalls, plus Checkpoint or Juniper firewall. 3 Month Contract start ASAP.

paying up to £380/day (Outside IR35). Start ASAP in Feb/March 2026.

The vast majority of work is expected to be remote. There may be occasional travel to customer Data Centre sites in Warwickshire, West/South England, sometimes average 2 to 3 days weekly onsite when required.

Working with a global IT Consultancy on large-scale network solutions projects for a Telecoms end client.

Key skills, experience + tasks will include:

• Must have in-depth F5 firewalls, plus Checkpoint or Juniper firewall security skills.
• Technical Ownership of a Telecoms end client's Network Security Infrastructure estate, processes, documentation + lifecycle management.
• Acting as the technical point of contact for all Network Security related projects, changes and modifications, including firewall rules base.
• Point of escalation and link to vendor support for Network Security infrastructure incidents.
• Design of customer networks including input into High-Level and Low-Level design (HLD/LLD).
• Technical support, change management (physical/remote), customer inventory management, EOL, hardware, software.
• Technical Environment: F5, Checkpoint, Juniper, Bluecoat, Cisco Networking, Cisco IPT / QoS / 802.1x, switches, wireless, Inflobox DNS, SSL VPN, DMVPN, IPsec, WAN, routing protocols.
• SC Security Clearance is essential for this contract.