Network Security Engineer (SC Cleared)
Posted Today by IO Associates
Negotiable
Outside
Remote
Reading, Berkshire, UK
Summary: The role of Network Security Engineer (SC Cleared) involves providing technical ownership of security infrastructure for a leading telecoms client through a global IT consultancy. This position is primarily remote with occasional travel to customer sites in the UK. The engineer will manage security-related changes, deliver support for both physical and remote changes, and liaise with vendors for incident resolution. Active SC clearance is required for this position.
Key Responsibilities:
- Provide technical ownership of the customer's security infrastructure estate, including processes, documentation, and life cycle management.
- Act as the technical point of contact and escalation for security-related changes and project work, particularly around Firewall rulebases.
- Deliver BAU and project support across both:
- Physical changes (on-site/hardware) and
- Remote changes (configuration/support)
- Manage change control activities, customer inventory tracking, hardware/software oversight, and EOL/EOS planning.
- Liaise with vendors for incident resolution and technical support cases.
- Contribute to network/security design work, supporting HLD/LLD production and updates.
Key Skills:
- Strong, recent hands-on experience with:
- Palo Alto (Firewalls/network security)
- F5
- Zscaler
- Proven experience supporting enterprise security infrastructure in a change-controlled environment.
Salary (Rate): £300/day
City: Reading
Country: UK
Working Arrangements: remote
IR35 Status: outside IR35
Seniority Level: undetermined
Industry: IT
Location: Mostly remote (UK) with occasional travel to customer sites (Wokingham, Corsham, Farnborough, Warwick; Reading/Berkshire base)
Contract: 6 months (ASAP start - July/August 2026)
Rate: £300/day Outside IR35
Clearance: Active SC clearance required
We're looking for a hands-on Network Security Engineer with active SC to support a leading telecoms end client via a global IT consultancy. This is a predominantly remote contract, with occasional on-site visits to UK customer locations.
Key Responsibilities- Provide technical ownership of the customer's security infrastructure estate, including processes, documentation, and life cycle management.
- Act as the technical point of contact and escalation for security-related changes and project work, particularly around Firewall rulebases.
- Deliver BAU and project support across both:
- Physical changes (on-site/hardware) and
- Remote changes (configuration/support)
- Manage change control activities, customer inventory tracking, hardware/software oversight, and EOL/EOS planning.
- Liaise with vendors for incident resolution and technical support cases.
- Contribute to network/security design work, supporting HLD/LLD production and updates.
- Strong, recent hands-on experience with:
- Palo Alto (Firewalls/network security)
- F5
- Zscaler
- Proven experience supporting enterprise security infrastructure in a change-controlled environment.
- Additional security/network technologies: Checkpoint, Juniper, Bluecoat
- Broader Cisco networking exposure (switching/routing/wireless) plus:
- QoS/802.1x
- DNS tooling (eg, Infoblox)
- VPN technologies (IPsec/SSL VPN/DMVPN)
- WAN routing protocols
- Telecoms industry experience
Applicants must be eligible to work in the UK and hold active SC clearance.