Network Security Engineer

Company: MCS Group | Your Specialist Recruitment Consultancy
Apply for the Network Security Engineer
Location: Belfast
Job Description:

Job Summary

A leading Managed Services and Cyber Security provider is looking to add an experienced Network Security Engineer to its growing team.

Working within a specialist Network Security function, you will provide 3rd Line support across a varied customer base, resolving complex firewall and security incidents while working alongside experienced Security Architects. This is an excellent opportunity for someone with a strong security background who enjoys troubleshooting, customer interaction and working with enterprise technologies.

Location: Belfast or Glasgow | Hybrid

Salary: £55,000 – £65,000

Key Responsibilities

  • Providing 3rd Line technical support for network security incidents
  • Configuring, maintaining and troubleshooting enterprise firewall solutions
  • Supporting Palo Alto, Fortinet, Check Point, F5 and Juniper technologies
  • Performing firewall rule reviews, policy optimisation and security hardening
  • Troubleshooting VPN connectivity (IPSec & SSL VPN)
  • Investigating and resolving complex network and security issues
  • Working directly with customers to deliver technical solutions
  • Producing technical documentation and supporting change management
  • Collaborating with Security Architects on customer projects when required

Requirements

  • Experience working within a Network Security or Infrastructure Security role, ideally within an MSP or customer‑facing environment
  • Hands‑on experience with Palo Alto Firewalls, Fortinet, Check Point, F5, Juniper SRX
  • Proficiency in TCP/IP, routing, VLANs, NAT, and VPN technologies (IPSec & SSL)
  • Firewall troubleshooting and policy management skills
  • Knowledge of Network Security best practices
  • Security certifications such as PCNSE, NSE4/7, CCSA/CCSE or Security+ are beneficial but not essential

Benefits

  • Competitive salary between £55,000 – £65,000
  • Hybrid working from either the Belfast or Scotland office
  • Exposure to enterprise Network Security technologies
  • Opportunity to work alongside experienced Security Architects
  • Ongoing technical training and certification support
  • Excellent career progression within a growing Cyber Security practice

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Posted: July 9th, 2026