Firewall Engineer in City of London

Network Security Engineer

Natilik

City Of London, England, United Kingdom

Overview

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.

Key Responsibilities

• 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.

Skills and Experience

• 5+ years experience working on Checkpoint firewalls in large/complex environments (e.g. MDSM, VSX, SmartConsole, 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.

Nice to Have

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

Benefits

• 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.

Seniority Level

Mid‑Senior level

Employment Type

Full‑time

Job Function

Information Technology

Industries

IT Services and IT Consulting