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We are seeking an experienced network security professional to design, implement, and operate complex, enterprise-scale perimeter security solutions in a hybrid environment. This role focuses on advanced firewall architecture, policy governance, cloud security, and high-impact incident resolution. The individual will act as a trusted subject matter expert, guiding security design decisions, leading critical changes, and ensuring compliance with global security standards.
Job Responsibility
Design and deploy enterprise-grade firewall architectures, including Next-Generation Firewalls (NGFW) and cloud-based security solutions in Azure
Govern, audit, and optimise large and complex firewall rule bases, VPN policies, and NAT configurations to balance security, performance, and resilience
Serve as the escalation point for complex security incidents and major network outages, leading troubleshooting and root cause analysis
Ensure firewall and perimeter security environments align with industry standards such as ISO 27001 and PCI-DSS, as well as client-specific security policies
Automate security operations and remediation activities using scripting and infrastructure-as-code approaches such as Python, Ansible, and Terraform
Contribute to the adoption of AIOps and agentic AI solutions within the network security landscape
Collaborate with internal teams and external vendors to deliver secure, scalable, and reliable network solutions
Requirements
10 to 12 years of relevant industry experience, including significant exposure in senior or lead roles
Proficient in firewall technologies such as Palo Alto Networks (Panorama), Fortinet (FortiManager), Juniper SRX, Check Point, or Cisco Firepower
Knowledgeable in designing and deploying proxy solutions (Open Proxy, Bluecoat, FortiGate), VPN concentrators (SSL and site-to-site IPsec), and load balancing solutions (F5 or cloud load balancers)
Strong foundation in TCP/IP networking, routing and switching protocols (BGP, OSPF), VPN technologies, and intrusion prevention systems
Experienced in cloud security implementations, particularly virtual firewalls within Microsoft Azure environments
Familiar with ITIL practices and disciplined change management processes
A confident communicator who can explain complex security concepts clearly to technical and non-technical stakeholders
What we offer
Opportunities to work on large-scale, global network security environments within a leading telecommunications organisation
Exposure to modern security architectures, cloud technologies, and automation-driven operations
A collaborative environment that values technical expertise, continuous improvement, and knowledge sharing
The ability to influence security strategy and contribute to critical transformation initiatives across Vodafone