L3 Senior LAN Network Engineer - Cisco DNAC & Campus Infrastructure

Key Responsibilities

Advanced LAN Support
Act as L3 escalation point for critical LAN incidents.
Perform advanced troubleshooting across campus networks.
Support large-scale Cisco and Aruba switching environments.
Troubleshoot complex routing and switching issues.

LAN Technologies
Cisco Catalyst 9K
Cisco Nexus
Aruba CX
HPE Comware
SDA (Software Defined Access)

Cisco Catalyst Center (DNAC)
Device onboarding and provisioning
Assurance Management
Software Image Management (SWIM)
Template deployment
Compliance management
SDA operational support

Problem Management
Lead Root Cause Analysis (RCA).
Identify recurring infrastructure issues.
Implement permanent corrective actions.
Maintain technical knowledge articles.

Upgrade & Lifecycle Management
IOS-XE upgrades
Switch refresh initiatives
Software lifecycle planning
Validation and rollback testing

Capacity & Performance Management
Capacity forecasting
Utilization analysis
Performance optimization
Infrastructure modernization

Security & Compliance




Vulnerability remediation
Security advisory reviews
Configuration compliance audits
Network segmentation support

Automation
Python scripting
Ansible automation
DNAC API integrations

Section Title: Skill Requirements

Skill Requirements
Required Skills
Cisco Catalyst Center (DNAC)
Cisco Catalyst 9K
Cisco Nexus
Aruba CX
OSPF
BGP
EIGRP
STP
QoS
SDA
Cisco ISE
Experience
7-10 years of LAN Engineering experience.
3+ years supporting Cisco DNAC.
Experience handling major incidents.
Preferred Certifications
CCNP Enterprise
Cisco SDA Specialization
Aruba ACNP
ITIL Foundation

About HCLTech:

We are HCLTech, one of the fastest-growing large tech companies in the world and home to 225,000+ people across 60 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud. The driving force behind that work, our people, are diverse, creative, and passionate, raisin

📌 Senior LAN Network Engineer (Barcelona)
🏢 HCLTech
📍 Barcelona