Dept.Manager - Network Security Operations Specialist (Firewall, F5 & Proxy) - BangaloreVOIS

Who we are

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VOIS (Vodafone Intelligent Solutions) is a strategic arm of Vodafone Group Plc, creating value for customers by delivering intelligent solutions through Talent, Technology \& Transformation.

As the largest shared services organisation in the global telco industry with 30,000 FTE, our portfolio of next-generation solutions and services are designed in partnership with customers across Vodafone Group, local markets, and partner markets to simplify and drive growth. With our strategic partner Accenture, we work alongside our Vodafone customers, other Telco and tech companies to drive transformation, meet the challenges of our industry and ensure we stay relevant and resilient. This partnership is a unique, industry-first model which brings together the best of in-house and 3rd party capability.

We work with customers across 28 countries from 10 VOIS locations: Albania, Egypt, Hungary, India, Romania, Spain, Turkey, UK, Germany, Ireland, and with a network of teams in Czech Republic, Italy, Greece, and Portugal.

VOIS #BeUnrivalled #CreateTheFuture

About this Role

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We are seeking an experienced Network Security Operations professional to join the VNO-ESOC team supporting Heritage 3 Network Operations. This role is focused on delivering reliable, secure and efficient operational support across enterprise network security infrastructure, including firewalls, proxy platforms, load balancers, VMware environments and Cisco FMC. The successful candidate will play a key role in incident resolution, service restoration, change implementation, risk management and continuous service improvement while ensuring high availability of customer-facing security services.

What you’ll do

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Incident, Problem and Service Request Management

• Troubleshoot and resolve incidents across firewall, proxy, load balancer, virtualisation and security management platforms within agreed service levels.
• Investigate complex service-impacting issues across Cisco, F5, Clavister, Fortinet, NetGuard Firewalls, Symantec/Broadcom Blue Coat Proxy, VMware Hypervisors and Cisco FMC.
• Manage L2 and L3 operational escalations including traffic flow analysis, routing issues, NAT issues, VPN connectivity problems, proxy access failures, load balancing issues and performance degradation.
• Maintain accurate incident records, root cause analysis, resolution details and closure documentation in line with ITIL practices.
• Collaborate with customers, vendors, internal teams and third-party providers to ensure timely resolution of critical incidents.
• Identify recurring issues and drive corrective actions to improve service stability and operational efficiency.
• Support hardware replacements, vendor escalations, RMA activities and service restoration efforts.
• Create and maintain operational documentation, standard operating procedures and implementation guides.

Change and Operational Support

• Review and validate change requests for technical accuracy, risk assessment, rollback planning and customer impact.
• Support platform upgrades, firmware updates, patch deployments, certificate renewals, vulnerability remediation and lifecycle management activities.
• Ensure operational resilience and availability of critical application and security services.

Firewall Operations and Security Policy Management

• Support day-to-day firewall operations across Fortinet, Cisco, Clavister and NetGuard platforms.
• Implement and validate firewall rule changes, access policies, NAT configurations, VPN configurations, routing updates and security zoning requirements.
• Participate in policy optimisation, governance and operational best practices.

F5 Load Balancer Operations

• Manage F5 load balancer services including virtual servers, pools, nodes, monitors, SSL profiles, iRules and traffic policies.
• Troubleshoot application availability, persistence, SSL offloading, health monitoring, traffic routing and performance issues.

Proxy and Web Security Operations

• Support enterprise proxy technologies including Symantec/Broadcom Proxy and Blue Coat platforms.
• Resolve URL filtering issues, authentication failures, SSL inspection concerns, policy mismatches and web traffic routing problems.
• Implement approved proxy policy changes, access controls, category exceptions and allow/block list updates.

Who you are

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Essential Experience \& Knowledge

• 8+ years of experience in network security operations, managed security services, telecom operations, hosting environments or enterprise infrastructure support.
• Experience leading teams or managing people within operational environments.
• Hands-on experience with Fortinet, Cisco, F5, Clavister and NetGuard technologies.
• Strong expertise in Cisco FMC including policy management, event analysis, device administration and configuration deployment.
• Practical experience with F5 Load Balancers covering virtual servers, pools, nodes, monitors, SSL profiles and traffic management.
• Working knowledge of Symantec/Broadcom Proxy and Blue Coat technologies.
• Understanding of VMware Hypervisors and virtualised infrastructure environments.
• Strong knowledge of routing, switching, DNS, VPNs, NAT, access control, certificates, SSL, TCP/IP and high-availability architectures.
• Good understanding of ITIL-based incident, problem, change and request management processes.
• Experience managing customer-impacting incidents and complex operational changes.
• Effective written and verbal communication skills, with the ability to engage a wide range of stakeholders.

Desired Experience

• Experience in large-scale multi-vendor network security environments.
• Exposure to SIEM integrations, security monitoring, syslog analysis and event correlation.
• Exposure to automation, scripting, reporting and operational dashboarding.
• Experience working within 24x7 managed services or global delivery organisat