Network Security Operations Specialist (Firewall, F5 & Proxy) -Bangalore VOIS

Who We Are
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
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
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
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 organisations
Familiarity with audit requirements, compliance controls, firewall governance and rule review processes
Exposure to cloud security, SASE, Secure Web Gateway, ZTNA and hybrid infrastructure environments
Essential Qualifications
Degree or diploma in Engineering, Computer Science, Information Technology, Cybersecurity, Electronics, Telecommunications or equivalent practical experience
Strong technical knowledge of enterprise network security and infrastructure operations
ITIL Foundation certification or demonstrated ITIL process knowledge
Desired Certifications
Fortinet certifications including NSE, FCNSA or FCNSP
Cisco certifications such as CCNA Security, CCNP Security or equivalent
F5 certifications including F5 CA or F5 CTS
Broadcom/Symantec Proxy or Blue Coat certifications
Security certifications from Cisco, Clavister, NetGuard or equivalent vendors
Behavioural Competencies
Strong customer focus and understanding of business impact
Clear and effective communication during incidents, escalations and change activities
Strong ownership and accountability for service outcomes
Collaborative approach with a willingness to support, coach and share knowledge with colleagues
Analytical problem-solving and troubleshooting capabilities
Ability to perform effectively during high-pressure operational situations
Attention to detail in planning, execution, documentation and validation activities
Enthusiasm for continuous learning and technology development
Alignment with the Vodafone Way: Speed, Simplicity, Trust, Innovation Hungry, Customer Obsessed, Ambitious and Competitive, One Company Local Root
Not a perfect fit?
Concerned you may not meet every requirement? Vodafone is committed to creating an inclusive workplace where everyone can thrive. If you are excited about this role but your experience does not align exactly with every aspect of the job description, you are encouraged to apply. You may be the right candidate for this or another opportunity, and the recruitment team will support you in exploring where your skills fit best.
What's In It For You
Opportunity to work across a diverse portfolio of network security technologies and enterprise-scale customer environments
Exposure to global managed services operations and complex security infrastructure platforms
Involvement in major incident management, service improvement and lifecycle management initiatives
Opportunity to collaborate with vendors, customers and cross-functional technical teams
Career growth within a high-availability, security-focused operational environment
Experience supporting business-critical services across telecom and enterprise infrastructures
What Skills You Will Learn
Advanced enterprise firewall administration and security policy management
F5 application delivery and load balancing technologies
Enterprise proxy and web security platform management
Cisco FMC operations and security analytics
Incident, change and problem management within ITIL-based environments
Security operations governance, compliance and operational resilience practices
Infrastructure troublesh

Work arrangement
Hybrid