Fortinet Network Security Engineer - Hybrid VPN Expert

CACI Ltd; Birmingham; Hybrid; GBP 65,000 - 90,000; Full time

Job summary

CACI Network Services in London is seeking a Senior Network Security Engineer to join the Network Team. You will plan, deploy, and manage client network security projects, ensuring robust infrastructure and smooth change control.

The role requires Fortinet expertise, NGFW deployments, and strong routing/switching knowledge. You will document changes, create RFC plans, and collaborate with stakeholders in fast-paced environments. Hybrid working arrangements apply.

Qualifications

• Experience in network security deployment or migration.
• Ability to manage complex policies and rules.
• Experience deploying NGFW in hybrid cloud environments.
• Extensive Fortinet firewall experience.
• Knowledge of IDS/IPS, user-ID, SSL inspection.
• Design enterprise VPN hubs and high-availability tunnels.
• Good routing and switching knowledge.
• Strong stakeholder engagement and customer service mindset.
• Able to work in a fast-paced and demanding environment.
• Fortinet NSE certifications (NSE 4–7).

Responsibilities

• Plan, manage and deploy technology changes to support DC services.
• Deploy LAN infrastructure to support end user services.
• Create implementation plans for RFCs with detailed checks.
• Document back-out plans and identify back-out points.
• Support stability and uptime by planning changes.
• Identify changes with zero downtime and plan resource use.
• Document change risks and mitigation tactics.
• Document network estate with high-quality diagrams.
• Peer review and validate deployment plans.

Skills

NGFW deployment

Fortinet firewalls

IDS/IPS

SSL inspection

VPN hubs design

High-availability tunnels

Routing & switching

Stakeholder engagement

Problem solving

Hybrid cloud environments

NSE 4-7 Fortinet certs

Change management

Tools

Fortinet firewall management tools

Job description

CACI Network Services in London is seeking a Senior Network Security Engineer to join the Network Team. You will plan, deploy, and manage client network security projects, ensuring robust infrastructure and smooth change control.

The role requires Fortinet expertise, NGFW deployments, and strong routing/switching knowledge. You will document changes, create RFC plans, and collaborate with stakeholders in fast-paced environments. Hybrid working arrangements apply.