Sr Subject Matter Expert (Support&Ops)

Job description

Summary Final technical escalation point for enterprise network and network security operations. Responsible for ensuring network availability, stability, security, performance, and compliance across Data Center, Campus, Branch, WAN, Cloud, and Security environments. Provid Key Responsibilities Key Responsibilities Act as the Level 3 escalation point for critical P1/P2 incidents and complex network issues. Lead advanced troubleshooting across LAN, WAN, WLAN, Data Center, Cloud, Security, DDI, and Load Balancer environments. Drive Root Cause Analysis (RCA), Problem Management, and implementation of permanent corrective actions. Support Cisco ACI fabric operations, including VRF management, EPG health checks, leaf commissioning/decommissioning, and fabric troubleshooting. Manage routing and switching technologies including BGP, OSPF, VLANs, VRFs, QoS, and network segmentation. Provide expert support for WAN, Internet, MPLS, SD-WAN, VPN, and hybrid connectivity solutions. Lead implementation of approved network and security changes, migrations, upgrades, and technology refresh activities. Support firewall, proxy, VPN, NAC, and secure access platforms, including policy management and security incident resolution. Manage F5 load balancer platforms including VIPs, Pools, SSL certificates, HA validation, and platform upgrades. Support AWS networking services including VPCs, Transit Gateway, Route Tables, Direct Connect, VPN, Security Groups, and NACLs. Perform capacity planning, availability reviews, performance analysis, and resiliency assessments. Coordinate with OEMs, TAC teams, ISPs, and service providers for complex issue resolution and restoration activities. Drive compliance reviews, configuration baseline validation, drift management, audit support, and remediation activities. Identify automation opportunities and support automation, observability, and self-healing initiatives. Develop and maintain technical documentation, standards, knowledge articles, and operational procedures. Mentor Tier 1 and Tier 2 engineers and provide technical leadership and governance support. Skill Requirements Enterprise Networking: Cisco ACI, Cisco Nexus, Cisco Catalyst, Cisco DNAC, Routing & Switching, BGP, OSPF, VLANs, VRFs, QoS, LAN, WAN, WLAN, MPLS, SD-WAN. Network Security: Palo Alto Firewalls, Check Point Firewalls, Cisco FTD/ASA, Fortinet Firewalls, Azure Firewall, Cisco ISE, VPN Technologies, Zscaler (ZIA/ZPA), Bluecoat Proxy, Secure Web Gateway Technologies. Application Delivery & Load Balancing: F5 BIG-IP LTM, GTM, APM, SSL Certificate Management, High Availability and Failover Technologies. DDI Services: Infoblox, BloxOne, DNS, DHCP, IPAM. Cloud Networking: AWS Networking, VPC, Transit Gateway, Route Tables, Direct Connect, VPN Connectivity, Security Groups, NACLs. Automation & Observability: Ansible Automation Platform, BMC Helix, Datadog, Grafana, Network Automation, Self-Healing Workflows. ITSM & Governance: ITIL Service Management, Incident Management, Problem Management, Change Management, Release Management, Compliance, Audit and Governance Management. Other Requirements null Apply now Information at a Glance Why HCLTech? 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 2026 totaled $14.8 billion. Disclaimer Privacy Statement Terms of use Sitemap Raise a Grievance We use cookies on our site. Please read more about cookies policy here. Opens in a new tab. Opens in a new tab. Opens in a new tab. Opens in a new tab. Opens in a new tab. Opens in a new tab. Copyright © 2026 HCL Technologies Limited Cookie Consent Manager When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. Because we respect your right to privacy, you can choose not to allow some types of cookies. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer. 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