3rd Line Network Engineer

JR United Kingdom; Hounslow; Remote; GBP 40,000 - 60,000; Full time

Job summary

A leading company in the IT infrastructure sector is seeking a proactive 3rd Line Network Engineer to enhance their team. This fully remote role involves configuring and managing Fortigate Firewalls, among other responsibilities, and is ideal for professionals passionate about robust network solutions. Candidates should have strong analytical skills, a solid understanding of networking protocols, and relevant Fortinet certifications preferred.

Qualifications

• Proven experience with Fortigate Firewalls configuration and management.
• Understanding of networking protocols like TCP/IP, BGP, OSPF, VLANs.
• Experience in cloud networking (Azure, AWS, GCP) is advantageous.

Responsibilities

• Act as escalation point for network issues and incidents.
• Design and implement secure network solutions.
• Monitor network performance and document configurations.

Skills

Network troubleshooting

Analytical skills

Communication

Documentation abilities

Tools

Fortigate Firewalls

VMware

Hyper-V

Network monitoring tools

Job description

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3rd Line Network Engineer, south west london

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Client:

Experis UK

Location:

south west london, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

4

Posted:

31.05.2025

Expiry Date:

15.07.2025

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Job Description:

Fully remote but preference for candidates to be based in Bristol or surrounding areas. Candidates must be based in the UK.

About the Role

We are seeking a highly skilled and proactive 3rd Line Network Engineer to join an MSP client who are growing their IT infrastructure team.

This is a fully remote position, ideal for a self-motivated professional who thrives in a fast-paced environment and is passionate about delivering robust and secure network solutions.

As a 3rd Line Engineer, you will be the escalation point for complex network issues, playing a critical role in maintaining and enhancing our clients' network infrastructure. Experience with Fortigate Firewalls is essential you will be expected to configure, manage, and troubleshoot Fortinet solutions with confidence.

Key Responsibilities

• Act as the final point of escalation for network-related incidents and problems.
• Design, implement, and support secure network solutions across multiple environments.
• Configure and maintain Fortigate Firewalls (FortiOS), including VPNs, policies, and UTM features.
• Monitor network performance and ensure system availability and reliability.
• Participate in on-call support rota to provide 24/7 coverage for critical issues.
• Collaborate with internal teams and external vendors to resolve complex issues.
• Document network configurations, changes, and procedures.
• Proven experience with Fortigate Firewalls (FortiManager/FortiAnalyzer a plus).
• Strong understanding of networking protocols (TCP/IP, BGP, OSPF, VLANs, etc.).
• Experience with enterprise switching and routing (Cisco, HP, or similar).
• VMware / Hyper-V
• Familiarity with network monitoring tools (e.g., PRTG, SolarWinds, Zabbix).
• Modern Workplace environments Windows 10/11
• Windows Server 2016 onwards
• Experience with cloud networking (Azure, AWS, or GCP) is advantageous.
• ITIL
• Excellent troubleshooting and analytical skills.
• Strong documentation and communication abilities.

Desirable Certifications

• Fortinet NSE 4 or higher (strongly preferred)