> Markdown version of [/jobs/ext/1590009-network-security-engineer](https://www.wearedevelopers.com/jobs/ext/1590009-network-security-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Network Security Engineer

- **Company:** Viatel
- **Location:** Belfast, UK
- **Salary:** £46,701.0
- **Contract:** Permanent contract
- **Skills:** Complex Networks, CompTIA Security+, Network Address Translation, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Network Security, Network Diagrams, Routing, Remote Access Technology, TCP/IP, Virtual Local Area Networks, Firewalls (Computer Science), Juniper, Palo Alto Networks, Fortinet, SSL VPN
- **Published:** July 10, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5794245527

## About the Role

* Experience with Palo Alto Networks, Fortinet, F5, Check Point, and Juniper SRX firewalls.
 * Strong networking knowledge (TCP/IP, VLANs, NAT, routing, VPNs).
 * Troubleshooting complex network and firewall issues.
 * Experience in customer-facing or managed services environments.
 * Knowledge of network security principles and best practices.
 * Good documentation and communication skills.

 * Palo Alto PCNSE
 * Fortinet NSE4/NSE7
 * Check Point CCSA/CCSE
 * Juniper JNCIA/JNCIS Security
 * CompTIA Security+

 * Strong problem-solving skills
 * Ability to work independently and in a team
 * Good communication skills
 * Attention to detail
 * Ability to manage multiple tasks

## Description

The Network Security Engineer will be responsible for the design, implementation, support, and troubleshooting of network security solutions for customers primarily using Palo Alto Networks, Fortinet, Check Point, and Juniper security products within our Cyber division. The role involves working as part of a technical team delivering security projects, operational support, and security improvements across multiple customer environments.

 * Design, implement, and support network security solutions across customer environments.
 * Configure, manage, and troubleshoot Palo Alto, Fortinet, Check Point, and Juniper firewalls.
 * Perform firewall rule reviews, policy optimisation, and security hardening.
Support VPN technologies including IPsec and SSL VPN.

 * Assist with network security incidents and troubleshooting.
 * Work with customers to gather requirements and implement security solutions.
 * Participate in change management processes.
 * Produce technical documentation and network diagrams.
 * Provide 2nd/3rd line support for network security issues.
 * Work collaboratively within a team supporting multiple customers.


## Related Videos

- [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers)
- [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch)
- [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go)
- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)
- [A Technical Introduction to Bitcoin's 2nd Layer- The Lightning Network](https://www.wearedevelopers.com/videos/15-a-technical-introduction-to-bitcoin-s-2nd-layer-the-lightning-network)
- [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities)

## Related Articles

- [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)
- [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk)
- [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)
- [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)
- [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)
- [Basic And Advanced Networking in Dart and Flutter](https://www.wearedevelopers.com/magazine/112-basic-and-advanced-networking-in-dart-and-flutter)