Firewall Engineer

Network Security Engineer

Natilik

City Of London, England, United Kingdom

Natilik is seeking an experienced Firewall Engineer to join our team in supporting and optimising a variety of complex enterprise firewall estates. This mid-level to senior, hands‑on technical role involves operational support, troubleshooting, incident response, and collaboration with our wider team.

• Manage, support, and troubleshoot enterprise firewall environments across multi‑site networks.
• Maintain and optimise firewall policies, routing, clustering, and performance.
• Support incident response, monitoring, alerting, and security event analysis.
• Produce clear documentation, reports, and configuration records.
• Contribute to continuous improvement, architecture enhancements, and best practices.

• 5+ years experience working on Checkpoint firewalls in large/complex environments (e.g. MDSM, VSX, Smart Console, Maestro, gateway appliances).
• Strong troubleshooting skills across firewalls, VPNs, security policies, and network connectivity.
• Comfortable operating under pressure during major incidents or high‑urgency situations.
• Familiarity with security monitoring tools and operational service processes.
• CCSA or CCSE certified.

• Cisco security platforms (e.g. ASA, Firepower, FTD/FMC).
• Experience or exposure to Algo Sec.
• PCNSE or CCNP certified.

• 25 days annual leave (+ bank holidays) rising with tenure.
• Quarterly awards and bonuses.
• Flexible working policy.
• Access to financial wellness support.
• Industry‑leading home working and mobility technology.
• Private medical insurance.
• Company shares (available after one year tenure).
• Access to EAP scheme for you and your household.
• Vehicle lease salary sacrifice scheme (available after one year tenure).
• Cycle to work scheme.
• Enhanced parental leave.
• Access to funding for additional qualifications and courses.
• Access to paid study leave.

Mid‑Senior level

Full‑time

Information Technology

IT Services and IT Consulting