Senior Network Security Engineer-Cisco/Check Point/F5 Expert

Falconsmartit; Guildford; On-site; GBP 85,000 - 120,000; Full time

Job summary

Falconsmartit is seeking a Senior Network Security Engineer (L4) to design, implement, and optimize enterprise security across multi-site data centers in the UK. You will work with Cisco security technologies, Check Point firewalls and F5 APM to deliver secure, scalable network solutions.

The role involves hands-on installations, upgrades, migrations and decommissioning, plus cross-team collaboration. You will produce high level designs, SOPs, incident RCA reports, and mentor junior engineers

Qualifications

• 6–10+ years of strong experience in enterprise Network Security.
• Experience in large, distributed, high-availability environments.
• Proven track record leading install, upgrade, migration, and decommission projects.
• Experience handling major incidents and RCA documentation.

Responsibilities

• Design, implement, and optimize enterprise security across multi-site data centers.
• Install, configure and deploy Cisco/Check Point/F5 devices; manage refresh and migrations.
• Lead L4 investigations; troubleshoot VPN, ASA/FTD, and firewall issues; perform RCA.
• Ensure compliance with ISO 27001, NIST, PCI-DSS and maintain SOPs.
• Collaborate with cross-functional/global teams to review security requirements.

Skills

Communication

Troubleshooting

Documentation

Mentoring

Leadership

Tools

Cisco ASA/FTD

FMC

Check Point Firewall

F5 APM

Cisco ISE

Nexus switching

Wireshark

VPN

Automation Scripting

Job description

Falconsmartit is seeking a Senior Network Security Engineer (L4) to design, implement, and optimize enterprise security across multi-site data centers in the UK. You will work with Cisco security technologies, Check Point firewalls and F5 APM to deliver secure, scalable network solutions.

The role involves hands-on installations, upgrades, migrations and decommissioning, plus cross-team collaboration. You will produce high level designs, SOPs, incident RCA reports, and mentor junior engineers