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Network Security Engineer
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Network Security Engineer
Network & Cyber Security Engineer Lincoln (Some Hybrid) £55,000–£65,000 DOE
An established UK defence technology and engineering business is hiring a Network & Cyber Security Engineer to own and build out its security function from the ground up.
This is a high-ownership role for someone who wants to design the frameworks, tooling, and processes rather than inherit them, with a genuine path to building and leading a team as the function matures.
Eligibility: This role is subject to security restrictions. Applicants must be British Nationals under UK nationality law and eligible for UK Security Vetting (UKSV).
What you'll be doing
Reporting to the Head of Operations, the role includes:
- Design and implement network and cyber security across a Fortinet/FortiGate firewall estate and a hybrid Active Directory environment.
- Drive full value from Microsoft 365 E5, Defender, Purview, Compliance, and Entra ID.
- Secure on-premises services and infrastructure.
- Partner with a DevSecOps function to embed secure-by-design across CI/CD pipelines.
- Lead vulnerability management end-to-end and act as the internal expert on incidents and technical risk.
- Build security policy and documentation aligned to:
- ISO 27001
- Cyber Essentials
- GDPR
- Defence Cyber Certification (DCC)
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What you'll need
- Proven experience securing hybrid on-prem and cloud environments, particularly Microsoft 365.
- Hands-on experience with Fortinet/FortiGate and enterprise network security architecture.
- Strong proficiency with:
- Microsoft security tooling: Defender, Purview, Entra ID, Conditional Access, Intune
- SIEM and IDS/IPS configuration, tuning, and threat response
- VMware vSphere / VDI experience.
- A practical, risk-based approach and the confidence to influence at all levels.
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Nice to have:
- Certifications: SC-200, MS-500, Fortinet NSE 4, CISM, CISSP, CEH, or CREST.
- Scripting knowledge: PowerShell, Python, or Bash.
- Knowledge of container security (e.g., Docker, Kubernetes).
- Exposure to blue/red team or pen-testing.
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