Sr Subject Matter Expert (Support&Ops)

HCL Technologies Limited; Dadri; On-site; INR 1,800,000 - 2,600,000; Full time

Job summary

HCLTech in India is seeking a Network Security Engineer (Level 2) to provide operation support and advanced troubleshooting across campus, data center, WAN, and cloud environments. You will serve as the primary escalation point from Level 1, collaborating with Level 3 SMEs, OEMs, ISPs, cloud providers, and security teams.

The role emphasizes incident management, change implementations, and continuous service improvement, with responsibilities spanning firewall/VPN management, DDI, AWS

Qualifications

• 6-8 years of experience in Network and Network Security Operations.
• Experience across Data Center, Campus, WAN, Cloud, and Security domains.
• Hands-on with firewalls, routing, switching, VPNs, load balancers, DDI, and cloud networking.
• Experience in 24x7 managed services or enterprise operations.
• Familiarity with ITIL-based processes and audit/compliance requirements.

Responsibilities

• Provide Level 2 support for enterprise network and security operations across LAN, WAN, WLAN, Data Center, Cloud, and Security.
• Escalate incidents unresolved by Level 1 and coordinate with Level 3 SMEs, OEMs, and cloud providers.
• Troubleshoot routing, switching, and security issues; monitor health and performance of networks.
• Support Cisco ACI fabric operations and performance validation.
• Manage firewall, VPN, NAC, and secure access configurations; respond to security incidents.
• Assist in incident/problem/change management and root-cause analysis activities.
• Contribute to automation, observability, and self-healing initiatives; maintain SOPs and docs.

Skills

Enterprise Routing & Switching

Data Center Networking

Network Security Platforms

Secure Access & Identity Services

Web Security & SSE Technologies

WAN & Connectivity Solutions

Application Delivery & Load Balancing

DDI Services

Cloud Networking

Network Monitoring & Observability

Automation & Infrastructure Operations

ITSM, Compliance & Governance

Tools

Cisco Nexus

Cisco Catalyst

Palo Alto

Check Point

Fortinet

Azure Firewall

F5 BIG-IP

Infoblox

AWS VPC

Zscaler

Datadog

Grafana

Ansible

Job description

The Network Security Engineer (Level 2) provides operational support and advanced troubleshooting for enterprise network and network security environments. The role is responsible for maintaining network availability, security, stability, and performance across Campus, Branch, WAN, Data Center, Cloud, and Security infrastructures.
The engineer acts as the primary escalation point from Level 1 support, handling complex incidents, security events, service requests, and change implementations while collaborating with Level 3 SMEs, OEMs, ISPs, cloud providers, and security teams. The role also contributes to continuous service improvement, compliance adherence, automation initiatives, and operational excellence.

Key Responsibilities

• Provide Level 2 support for enterprise network and security operations across LAN, WAN, WLAN, Data Center, Cloud, and Security environments.
• Act as the escalation point for incidents and service requests unresolved by Level 1 teams.
• Troubleshoot network connectivity, routing, switching, and security-related issues and coordinate escalation to Level 3 when required.
• Monitor network and security infrastructure to ensure service availability, reliability, and performance.
• Support Cisco ACI fabric operations, including health monitoring, fault analysis, EPG validation, and routine operational activities.
• Manage and troubleshoot routing and switching technologies including VLANs, VRFs, OSPF, BGP, and QoS under defined operational procedures.
• Support WAN, Internet, MPLS, SD-WAN, VPN, and hybrid connectivity services.
• Administer and troubleshoot firewall, proxy, VPN, NAC, and secure access solutions, including policy implementation and security incident response.
• Support F5 Load Balancer administration including VIP management, pool monitoring, SSL certificate renewal, and HA validation.
• Manage DDI services including DNS, DHCP, and IPAM administration.
• Support AWS networking components including VPCs, Route Tables, VPNs, Security Groups, NACLs, Transit Gateway, and Direct Connect.
• Participate in incident management, problem management, and Root Cause Analysis activities.
• Implement approved network and security changes, standard configurations, upgrades, and maintenance activities.
• Coordinate with OEMs, TAC teams, ISPs, and service providers for issue resolution.
• Perform configuration reviews, compliance validation, audit support, and remediation tasks.
• Maintain and enhance operational documentation, knowledge articles, and standard operating procedures.
• Support automation, monitoring, observability, and self-healing initiatives.
• Provide technical guidance to Level 1 engineers and assist in knowledge transfer activities.
• Participate in on-call rotation and major incident support as required.
• Ensure adherence to ITIL processes, regulatory requirements, security policies, and operational standards.

Skill Requirements

• Enterprise Routing & Switching: Strong knowledge of Cisco Nexus, Cisco Catalyst, Routing & Switching, VLANs, VRFs, BGP, OSPF, QoS, and network segmentation.
• Data Center Networking: Experience supporting Cisco ACI fabric environments, including fabric health monitoring, EPG validation, fault analysis, leaf switch troubleshooting, and operational support.
• Network Security Platforms: Hands-on experience with Palo Alto, Check Point, Cisco FTD/ASA, Fortinet, and Azure Firewall technologies including policy administration and troubleshooting.
• Secure Access & Identity Services: Knowledge of Cisco ISE, VPN technologies, NAC solutions, secure remote access, MFA integrations, and policy-based access controls.
• Web Security & SSE Technologies: Experience supporting Zscaler (ZIA/ZPA), Bluecoat Proxy, Secure Web Gateway (SWG), and enterprise internet security solutions.
• WAN & Connectivity Solutions: Support and troubleshooting of WAN, MPLS, SD-WAN, Internet, VPN, and hybrid connectivity environments.
• Application Delivery & Load Balancing: Working knowledge of F5 BIG-IP LTM, GTM, SSL certificate management, VIP and pool administration, high availability, and failover validation.
• DDI Services: Experience managing Infoblox/BloxOne platforms, DNS, DHCP, and IP Address Management (IPAM).
• Cloud Networking: Hands-on support for AWS networking services including VPCs, Route Tables, Transit Gateway, Direct Connect, VPNs, Security Groups, and NACLs.
• Network Monitoring & Observability: Experience with Datadog, Grafana, BMC Helix, and enterprise monitoring platforms for proactive fault detection, alert management, and performance monitoring.
• Automation & Infrastructure Operations: Knowledge of Ansible Automation Platform, network automation concepts, configuration management, scripting fundamentals, and self-healing workflows.
• ITSM, Compliance & Governance: Understanding of ITIL processes including Incident, Problem, Change, and Release Management, along with audit, compliance, governance, and risk management requirements.

Other Requirements

• 6-8 years of experience in Network and Network Security Operations.
• Experience supporting enterprise environments across Data Center, Campus, WAN, Cloud, and Security domains.
• Hands-on experience in troubleshooting and supporting firewalls, routing, switching, VPNs, load balancers, DDI platforms, and cloud networking.
• Experience working in 24x7 managed services or enterprise operational environments.
• Exposure to large-scale production environments with defined SLAs and ITIL-based operational processes.

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026totaled $14.8billion.