Network Security Engineer

Free-Work UK; Greater London; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Competitive Salary

Annual Bonus

Private Healthcare

Pension

Progression

Gym Membership

Full Training

Job summary

Free-Work UK in London is seeking an experienced Network Security Engineer (Eligible for SC Clearance) to own security across global systems, including satellite and communications technologies. You will work with compliance and engineering teams to embed robust security practices and protect systems against evolving threats.

The role involves designing, implementing and maintaining security solutions, actively monitoring threats with SIEM/IDS-IPS, and incident response.

Qualifications

• Experience designing and implementing network security across complex environments.
• Strong incident response and threat-hunting capabilities.
• Hands-on with multi-vendor networking environments (Cisco/Juniper).
• Familiarity with ISO27001, GDPR and security frameworks.

Responsibilities

• Design, implement and maintain network security solutions across internal and customer systems.
• Monitor security tools (SIEM, IDS/IPS) and respond to incidents and vulnerabilities.
• Provide third-line support and act as escalation point for security issues.
• Develop and maintain security policies, procedures, and documentation.

Skills

Network security

Incident response

Threat monitoring

Multi-vendor networking (Cisco/Juniper

Tools

SIEM

IDS/IPS

Vulnerability management

Penetration testing

Job description

Network Security Engineer (Eligible for SC Clearance)

• Competitive Salary
• Annual Bonus
• Private Healthcare
• Pension
• Progression
• Gym Membership
• Full Training

London

Are you an experienced Network Security Engineer looking to take ownership of network security across complex global systems while working with cutting-edge satellite and communications technology? This is a fantastic opportunity to join a well-established and growing engineering organisation, where you will play a key role in developing and implementing security strategies across both internal and customer environments. You will work closely with compliance and engineering teams to embed robust security practices into daily operations and ensure systems are protected against evolving threats.

In this role, you will be responsible for designing, implementing, and maintaining security solutions while actively monitoring threats and responding to incidents. You will utilise tools such as SIEM, IDS/IPS, and vulnerability management platforms to maintain the integrity of networks, as well as carry out investigations into security events and recommend improvements.

The ideal candidate will have strong hands-on experience across multi-vendor network environments, with a deep understanding of cybersecurity frameworks and compliance standards such as ISO27001. This position offers a varied and technically engaging workload alongside opportunities to mentor colleagues and contribute to ongoing security improvements.

The Role

• Design, implement and maintain network security solutions across internal and customer systems
• Monitor security tools (SIEM, IDS/IPS) and respond to incidents and vulnerabilities
• Provide third-line support and act as a key escalation point for security issues
• Develop and maintain security policies, procedures, and documentation
• Collaborate with internal teams to improve security across infrastructure

The Person

• Strong experience with Cisco and Juniper networking technologies
• Proven background in cybersecurity tools including SIEM, IDS/IPS and penetration testing
• Knowledge of ISO27001, GDPR and security frameworks
• Ability to troubleshoot and resolve complex security issues independently

We are an equal opportunities company and welcome applications from all suitable candidates.