SeniorAdministrator - Wireless Networking

HCL Technologies Limited; Deutschland; On-site; EUR 60,000 - 90,000; Full time

Job summary

HCL Technologies Limited is seeking a Senior Administrator - Wireless Networking to manage operational support, monitoring, and maintenance of enterprise WLAN and LAN environments based on Cisco and Aruba technologies. The role emphasizes incident resolution and service requests in a 24x7 enterprise campus network.

You will collaborate with L1/L3 teams and ensure high availability across WLAN and switching fabric.

Qualifications

• 3-5 years of LAN Operations experience.
• Experience in enterprise campus networks.
• Experience supporting 24x7 operations.

Responsibilities

• Monitor network health and availability.
• Troubleshoot Layer 1, 2 and 3 connectivity issues.
• Support VLAN, trunking, port configuration and connectivity requests.
• Aruba CX and Cisco switching configuration and maintenance.
• Update incident and change records in ServiceNow.
• Escalate complex issues to L3 teams.

Skills

Cisco Catalyst Switching

Cisco Nexus Switching

Aruba CX Switching

VLANs, STP, EtherChannel

OSPF, EIGRP

HSRP, VRRP

Basic QoS knowledge

ServiceNow

Tools

Splunk

ThousandEyes

ServiceNow

iObserve

Job description

Career Opportunities: SeniorAdministrator - Wireless Networking (155470)

Job Summary : L2 Wireless Network Engineer - Cisco & Aruba WLAN Operations
Role Summary
The L2 Wireless Engineer is responsible for operational support, monitoring, troubleshooting, configuration, and maintenance of enterprise wireless environments based on Cisco and Aruba technologies

Role Summary

The L2 LAN Network Engineer is responsible for operational support, monitoring, troubleshooting, configuration, and maintenance of enterprise LAN infrastructure across Cisco Catalyst, Cisco Nexus, Aruba CX, and HPE Comware environments. The role focuses on incident resolution, service requests, standard changes, and maintaining network availability in a 24x7 operational environment.

Key Responsibilities

Key Responsibilities

LAN Operations Support

• Monitor network health and availability.
• Troubleshoot Layer 1, Layer 2, and Layer 3 connectivity issues.
• Support VLAN, trunking, port configuration, and connectivity requests.

Switching Support

• Aruba CX Switches
• HPE Comware Switching

Routing & Switching

• Troubleshoot STP-related issues.
• Support HSRP and VRRP operations.
• Perform route verification and connectivity validation.
• Resolve L2 incidents within SLA.
• Support L1 team whenever necessary and work closely with the L1 team.
• Support service request fulfillment.
• Escalate complex issues to L3 teams.
• Update incident and change records in ServiceNow.

Change Management

• Implement approved network changes.
• Execute maintenance activities.
• Validate successful implementations.
• Perform rollback activities if required.

Monitoring & Tools

• Splunk
• ThousandEyes
• ServiceNow
• iObserve

Documentation

• Update network diagrams.
• Maintain CMDB records.
• Create implementation and troubleshooting reports.

Skill Requirements

Required Skills

• Cisco Catalyst Switching
• Cisco Nexus Switching
• Aruba CX Switching
• VLANs, STP, EtherChannel
• OSPF, EIGRP
• HSRP, VRRP
• Basic QoS knowledge
• ServiceNow

Experience

• 3-5 years of LAN Operations experience.
• Experience in enterprise campus networks.
• Experience supporting 24x7 operations.

Preferred Certifications

• CCNA Enterprise
• Aruba Certified Associate
• ITIL Foundation

Other Requirements

Other Requirement : Wireless Operations
Monitor enterprise WLAN services.
Support wireless user connectivity issues.
Troubleshoot authentication failures.
Manage guest wireless services.
Support SSID administration activities.
Cisco Wireless Support
Cisco 9800 Wireless Controllers
Cisco Access Points
Cisco Wireless Assurance
Cisco Mobility Services
Aruba Wireless Support
Aruba Central
Aruba Mobility Controllers
Aruba Access Points
Aruba AirWave (if applicable)
Incident Management
Resolve wireless incidents.
Support L1 team whenever necessary and work closely with the L1 team.
Troubleshoot wireless client issues.
Support roaming investigations.
Escalate RF-related and complex issues to L3.
Configuration Management
SSID provisioning
AP deployment support
Controller configuration updates
WLAN policy implementation
Monitoring
Aruba Central
Cisco Catalyst Center Assurance
SolarWinds
ThousandEyes
Compliance & Reporting
Validate AP health.
Monitor controller availability.
Support firmware compliance activities.
Assist in wireless performance reporting.
Required Skills
Cisco WLC 9800
Cisco Access Points
Aruba Central
Aruba Controllers
WLAN Troubleshooting
WPA2/WPA3
802.1X Fundamentals
RADIUS Basics
Experience
3-5 years of Wireless Operations experience.
Experience supporting Cisco or Aruba wireless networks.
Good understanding of WLAN fundamentals.
Preferred Certifications
CCNA Wireless / Enterprise
Aruba ACA
ITIL Foundation