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, Engineeri

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