Experience: 5-12years

Location: Bengaluru

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About this Role

We are seeking an experienced Network Security Operations Specialist to join the VNO-ESOC team supporting Heritage 3 Network Operations. The role focuses 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 helping to maintain high availability of customer-facing security services. L

Who are you

You are an experienced network security professional with a strong operational background across enterprise security technologies and infrastructure services. You possess excellent troubleshooting capabilities, a customer-focused mindset and the ability to perform effectively in fast-paced operational environments.

Essential Experience & Knowledge

- 5-7 years of experience in network security operations, managed security services, telecom operations, hosting environments or enterprise infrastructure support.
- Experience leading teams or supporting people management activities 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, including:

- Virtual servers

- Pools

- Nodes

- Monitors

- SSL profiles

- Traffic management
- Working knowledge of Symantec/Broadcom Proxy and Blue Coat technologies.
- Understanding of VMware Hypervisors and virtualised infrastructure environments.

- Strong knowledge of:

- Routing and switching

- DNS

- VPNs

- NAT

- Access control

- Certificates and SSL

- TCP/IP

- High availability architectures
- Good understanding of ITIL-based incident, problem, change and request management practices.
- Experience managing customer-impacting incidents and complex operational changes.
- Strong written and verbal communication skills with the ability to engage effectively with a broad 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 demonstrable ITIL process knowledge.

Desired Certifications

- Fortinet certifications such as NSE, FCNSA or FCNSP.
- Cisco certifications such as CCNA Security, CCNP Security or equivalent.
- F5 certifications such as F5 CA or F5 CTS.
- Broadcom/Symantec Proxy or Blue Coat certifications.
- Security certifications from Cisco, Clavister, NetGuard or equivalent vendors.

Behavioural Competencies

- Customer-focused approach with a strong understanding of business impact.
- Clear and effective communication during incidents, escalations and change activities.
- Strong ownership and accountability for service outcomes.
- Collaborative working style with a willingness to support,



coach and share knowledge.
- Analytical troubleshooting and problem-solving skills.
- Ability to perform effectively during high-pressure operational situations.
- Robust attention to detail across planning, execution, documentation and validation activities.
- Commitment to continuous learning and professional development.
- Alignment with the Vodafone values of Speed, Simplicity, Trust, Innovation Hungry, Customer Obsessed, Ambitious and Competitive, and One Company Local Roots.

What you will 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

- Performance degradation
- Maintain accurate incident records, root cause analyses, resolution details and closure documentation in line with ITIL practices.
- Collaborate with customers, vendors, internal teams and third-party providers to support timely resolution of critical incidents.
- Identify recurring issues and implement 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.
- Help maintain 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 activities and operational best practices.

F5 Load Balancer Operations

- Manage F5 load balancer services, including:

- Virtual servers

- Pools

- Nodes

- Monitors

- SSL profiles
- iRules

- 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 issues.
- Implement approved proxy policy changes, access controls, category exceptions and allow/block list updates.

What skills you need

Primary Skills

- Firewall Administration
- Proxy Technologies
- Load Balancers

Secondary Skills

- FortiManager
- FortiAnalyzer
- IDS/IPS

Technical Knowledge Areas

- Cisco FMC
- Fortinet Security Platforms




- Cisco Security Technologies
- F5 Load Balancing
- Clavister and NetGuard Firewalls
- Symantec/Broadcom Proxy
- Blue Coat Proxy
- VMware Hypervisors
- Routing & Switching
- DNS
- VPN Technologies
- NAT
- SSL & Certificate Management
- High Availability Design
- ITIL Service Management

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 troubleshooting across networking, virtualisation and security technologies.
- Exposure to cloud security, SASE, ZTNA and hybrid security architectures.

Whats in it for you

- Opportunity to work across a diverse portfolio of network security technologies and enterprise-scale environments.
- Exposure to global managed services operations and complex security infrastructure platforms.
- Participation in major incident management, service improvement and lifecycle management initiatives.
- Opportunity to collaborate with customers, vendors and cross-functional technical teams.
- Career growth within a security-focused, high-availability operational environment.
- Experience supporting business-critical services across telecom and enterprise infrastructures.

Missing Candidate-Relevant Information The following information would further strengthen the :

- Size and structure of the operational team.
- On-call responsibilities and escalation expectations.
- Scale of customer environments and technology landscape supported.
- Service level targets and key operational performance measures.
- Specific automation, scripting and tooling requirements (for example Python, PowerShell or Ansible).

About VOIS VOIS (Vodafone Intelligent Solutions) is a strategic arm of Vodafone Group Plc, creating value and enhancing quality and efficiency across 28 countries, and operating from 7 locations: Albania, Egypt, Hungary, India, Romania, Spain and the UK. Over 29,000 highly skilled individuals are dedicated to being Vodafone Groups partner of choice for talent, technology, and transformation. We deliver the best services across IT, Business Intelligence Services, Customer Operations, Business Operations, HR, Finance, Supply Chain, HR Operations, and many more.

Established in 2006, VOIS has evolved into a global, multi-functional organisation, a Centre of Excellence for Intelligent Solutions focused on adding value and delivering business outcomes for Vodafone. #VOIS #BeUnrivalled #CreateTheFuture

About Vodafone

You may have already heard of Vodafone. We are a leading telecommunications company across Europe and Africa. What you may not know is that we continuously invest in new technologies to improve the lives of millions of customers, businesses and communities around the world, creating a better future for everyone.

As part of our global family, whether that is Vodafone, Vodacom or VOIS, you will have a sense of pride and purpose as you contribute to a culture of innovation. We pursue equality of opportunity and inclusion for all candidates through our employment policies and practices. We recognise and celebrate the importance of diversity and inclusivity in our workplace and do not tolerate discrimination related to, but not limited to, race, colour, age, veteran status, gender identification, sexual orientation, pregnancy, ethnicity, disability, religion, political affiliation, trade union membership, nationality, indigenous status, medical condition, HIV status, social origin, cultural background, social status or marital status.

📌 Hiring Network Security Operations-Firewall,& Proxy with VOIS (Bengaluru)
🏢 _VOIS
📍 Bengaluru