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NineTech

Firewall Engineer

Hybrid

London, United kingdom

£ 80 /hour

Freelance

15-12-2025

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Skills

Communication Network Security Firewalls Problem-solving Networking Analytical Thinking TCP/IP

Job Specifications

Job Title: Network Firewall Specialist – Checkpoint & Fortinet

Overview:

My client are looking for an experienced Network Firewall Engineer for an initial 6 month contract.

The role is INSIDE of IR35 and paying £530P/D.

This contract is initial 6 Month Contract

The client are looking for a candidate with strong Checkpoint and Fortinet technologies to support and secure mission-critical telecom infrastructure.

This role requires a strong foundation in telecommunications and hands-on experience in managing, maintaining, and troubleshooting complex firewall environments. The successful candidate will play a key role in ensuring the performance, reliability, and security of network systems.

Key Responsibilities:

Administer, configure, and maintain Checkpoint and Fortinet firewalls within a telecom setting.
Execute regular patching and upgrades to align with security best practices and compliance standards.
Diagnose and resolve network security issues with a focus on minimizing service disruptions.
Analyze firewall logs and alerts to detect vulnerabilities and mitigate potential threats.
Design and enforce firewall rules, VPNs, access controls, and other security policies.
Collaborate with Network Operations (NOC), Security Operations (SOC), and IT teams to resolve incidents and improve infrastructure.
Maintain thorough documentation of configurations, processes, and troubleshooting activities.

Required Skills & Experience:

Proven hands-on experience with Checkpoint (Gaia, R80) and Fortinet (FortiGate, FortiManager, FortiAnalyzer) firewalls.
In-depth knowledge of firewall policy configuration, NAT, VPNs (IPSec/SSL), IPS/IDS, and ACLs.
Skilled in patch management and upgrade procedures for firewall platforms.
Strong troubleshooting capabilities in high-availability, carrier-grade telecom networks.
Solid grasp of core networking protocols such as TCP/IP, BGP, OSPF, and VLANs.
Experience with log analysis tools and SIEM systems.
Background in the telecom industry, especially with large-scale service provider networks.
Excellent analytical thinking, communication, and problem-solving skills.

Preferred Certifications:

Checkpoint Certified Security Expert (CCSE)
Fortinet NSE4 or NSE7, or equivalent qualifications

About the Company

NineTech is a cutting-edge tech recruitment firm founded by close friends Jack and Louis. With a decade of industry experience, Jack and Louis provide end-to-end solutions for technical businesses across various functions, specialising in Sales, Engineering, Infrastructure, Digital and Product. Committed to giving back, NineTech aims to create positive change in the Manchester community and the wider industry. Know more