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, raising the bar for excellence on a regular basis.

We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version of themselves that they can be. If all this sounds like an environment you’ll thrive in, then you’re in the right place. Join us on our journey in advancing the technological world through innovation and creativity.

Why Us?

We offer End-to-end digital transformation expertise that helps clients from strategy through execution. We work with the biggest brands, offering the opportunity to be a part of industry-leading work.
We are invested in your growth, offering learning and career development opportunities at every level to help you find your spark.




We offer freedom and flexibility on the job, empowering our employees to make decisions.
We offer a virtual-first work environment, promoting a good work-life balance and real flexibility Our company is extremely diverse with representation of 165 nationalities.
We offer the opportunity to work with colleagues across the globe.
We are a certified great place to work and a top employer in 25 countries including Romania, offering a positive work environment that values employee recognition and respect.

If you have a valid disability certificate, Certificate of Disability in Force, please contact us.

Among HCL's principles we would like to highlight diversity and inclusion as a strength in our values and practices. To achieve all our objectives, it intends to attract, develop, and retain different profiles, assuming diversity as a key factor and differentiator of fundamental innovation in our organization. We welcome and value all people, and we are committed to the inclusion and sense of belonging of each person who is part of HCL.

HCL is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations, and ordinances.

📌 Senior LAN Network Engineer - Cisco DNAC & Campus Infrastructure (Barcelona)
🏢 HCLTech
📍 Barcelona