L3 Senior Lan Network Engineer - Cisco Dnac & Campus Infrastructure

Hcltech; Barcelona; Presencial; EUR 55.000 - 75.000; Jornada completa

Descripción de la vacante

HCLTech is seeking an L3 Senior LAN Network Engineer to manage Cisco DNAC-enabled campus infrastructure. The role focuses on advanced troubleshooting, incident escalation, and network optimization across Cisco and Aruba environments.

The ideal candidate has extensive LAN engineering experience, DNAC proficiency, and a track record of handling major incidents, with a strong emphasis on network health and performance.

Formación

• 7-10 years of LAN engineering experience.
• 3+ years supporting Cisco DNAC.
• Experience handling major incidents.

Responsabilidades

• 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.

Conocimientos

OSPF

BGP

EIGRP

STP

QoS

SDA

Cisco ISE

DNAC

Cisco Catalyst 9K

Cisco Nexus

Aruba CX

Python scripting

Ansible automation

Herramientas

Cisco Catalyst Center (DNAC)

Cisco Catalyst 9K

Cisco Nexus

Aruba CX

HPE Comware

Descripción del empleo

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

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.