Network Security Engineer

Charles Jenson Recruitment Ltd; England; On-site; GBP 90,000 - 120,000; Full time

Job summary

Charles Jenson Recruitment Ltd is seeking a Network Security Engineer to lead secure network initiatives across on-prem, cloud, and hybrid environments. You will design, deploy, and maintain advanced security architectures, work with SOC, and ensure compliance with ISO 27001, NIST, and GDPR.

The role requires 7–10+ years of experience, hands-on firewall management, cloud security in Azure and AWS, zero trust, micro-segmentation, SASE, and collaboration with cross-functional teams.

Qualifications

• 7–10+ years of experience in Network Security Engineering.
• Hands-on experience managing enterprise firewall platforms (e.g., Palo Alto, Check Point, Cisco Firepower, Fortinet, Juniper).
• Deep understanding of securing cloud and hybrid environments, including Azure and AWS.
• Experience with network segmentation, Zero Trust initiatives, and cloud security controls.
• Strong troubleshooting skills and expertise in network protocols, security frameworks, and risk assessment.
• Ability to work effectively under pressure with high stakeholder engagement.

Responsibilities

• Develop and implement secure network architectures aligned with Zero Trust principles across on–premises, cloud, and hybrid environments.
• Manage and optimize enterprise firewall platforms, ensuring policies, rules, and security controls are effective and compliant.
• Lead initiatives to modernize network security, including micro–segmentation, SASE, and adaptive access solutions.
• Securely connect distributed workforce and cloud resources through virtual firewalls, VPNs, and SASE architectures.
• Conduct security assessments, vulnerability scans, and risk analysis to identify and remediate potential threats.
• Collaborate with cross–functional teams and SOC analysts to monitor security events, investigate incidents, and improve detection capabilities.
• Support compliance efforts by ensuring security controls meet standards such as ISO 27001, NIST, GDPR, and others.
• Configure and support security tools including cloud–native security services in Azure and AWS, DDoS protection, and threat monitoring solutions.

Skills

Extensive security experience

Stakeholder engagement under pressure

Troubleshooting network protocols

Tools

Palo Alto

Check Point

Cisco Firepower

Fortinet

Juniper

Azure

AWS

Job description

Join us in shaping the future of secure enterprise networks as a Network Security Engineer dedicated to protecting critical infrastructure across complex environments. This is your opportunity to lead transformative security initiatives that safeguard organizational assets, support innovation, and empower users worldwide.

Overview

As a key member of our cybersecurity team, you will design, deploy, and maintain advanced network security solutions tailored to enterprise needs. Your expertise will directly impact our ability to prevent cyber threats, enable secure remote access, and uphold regulatory standards, all while working in a dynamic, inclusive environment committed to continuous growth.

What You Will Do

• Develop and implement secure network architectures aligned with Zero Trust principles across on–premises, cloud, and hybrid environments.
• Manage and optimize enterprise firewall platforms, ensuring policies, rules, and security controls are effective and compliant.
• Lead initiatives to modernize network security, including micro–segmentation, SASE, and adaptive access solutions.
• Securely connect distributed workforce and cloud resources through virtual firewalls, VPNs, and SASE architectures.
• Conduct security assessments, vulnerability scans, and risk analysis to identify and remediate potential threats.
• Collaborate with cross–functional teams and SOC analysts to monitor security events, investigate incidents, and improve detection capabilities.
• Support compliance efforts by ensuring security controls meet standards such as ISO 27001, NIST, GDPR, and others.
• Configure and support security tools including cloud–native security services in Azure and AWS, DDoS protection, and threat monitoring solutions.

Must–Have Qualifications

• 7–10+ years of experience in Network Security Engineering.
• Proven hands–on experience managing enterprise firewall platforms (e.g., Palo Alto, Check Point, Cisco Firepower, Fortinet, Juniper).
• Deep understanding of securing cloud and hybrid environments, including Azure and AWS.
• Experience with network segmentation, Zero Trust initiatives, and cloud security controls.
• Strong troubleshooting skills and expertise in network protocols, security frameworks, and risk assessment.
• Ability to work effectively under pressure with high stakeholder engagement.

Nice–to–Have Skills

• Certifications such as Palo Alto PCNSE, Check Point CCSE/CCSM, Fortinet NSE, Cisco CCNP Security, CISSP, CISM, or cloud–specific security credentials (Azure AZ–500, AWS Security Specialty).
• Knowledge of automation scripting with PowerShell, Python, Terraform, or Ansible.
• Experience in regulated industries including finance, healthcare, or public sector.

We offer a collaborative, inclusive work environment where your expertise makes a real impact.