Senior Network Engineer
About the role

As a

Senior Network Engineer , you will make an impact by designing, implementing, and optimizing enterprise data center, campus, and wireless network solutions that support business-critical operations. You will be a valued member of the Infrastructure Engineering team and work collaboratively with network architects, security teams, project managers, and key business stakeholders to deliver scalable, secure, and high-performing network environments.

In this role, you will:

Lead the design, deployment, migration, and support of large-scale enterprise data center and campus network infrastructures.

Implement and optimize Cisco BGP EVPN/VXLAN solutions to enable scalable network segmentation and modernized connectivity.

Design, configure, and maintain Cisco ACI environments, including fabric architecture, policy management, integrations, upgrades, and troubleshooting.

Drive wireless infrastructure modernization initiatives, including access point refreshes, RF optimization, and performance improvements for high-density environments.

Develop technical designs, migration plans, testing strategies, operational runbooks, and documentation while providing expert guidance to cross-functional teams.

Work model

This is a

hybrid position

requiring attendance at a client or Cognizant office as needed. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.

What you need to have to be considered

15+ years of experience designing, implementing, and migrating large-scale enterprise routing and switching environments.

Strong expertise with Cisco networking technologies, including routing, switching, Cisco Nexus, Cisco Catalyst, Cisco ACI (APIC), and campus networking solutions.





Hands-on experience implementing and supporting Cisco BGP EVPN/VXLAN architectures in enterprise environments.

Deep knowledge of wireless networking technologies, including Cisco wireless solutions, Catalyst Center, Wireless LAN Controllers (WLCs), Access Points, and Cisco ISE integration.

Advanced understanding of routing protocols and network architectures, including BGP, OSPF, EIGRP, IS-IS, LAN/WAN, TCP/IP, DNS, QoS, VPN/IPsec, and VoIP.

Experience working in complex multi-vendor environments that may include Cisco, Palo Alto, F5, Zscaler, and Citrix technologies.

Proven ability to troubleshoot and resolve complex network issues across data center, campus, wireless, and security domains.

Experience creating High-Level Design (HLD), Low-Level Design (LLD), implementation plans, migration plans, and acceptance testing documentation.

Advanced/proficient English communication skills with the ability to collaborate effectively with integral teams and stakeholders.

Strong project management and stakeholder management skills, with the ability to manage priorities, dependencies, and delivery timelines.

These will help you stand out

Cisco certifications such as CCNP, CCIE, or equivalent advanced networking credentials.

Experience leading enterprise network modernization and hardware refresh initiatives.

Expertise in wireless RF design, site surveys, coverage optimization, and capacity planning.

Knowledge of enterprise security best practices, threat mitigation, and compliance-driven network design.

Experience mentoring engineers and serving as a technical lead for large-scale infrastructure projects.

Additional role details

Work Schedule:

8:00 AM to 5:00 PM EST

Language Requirement:

Advanced/Proficient English

Work Model:

Hybrid

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📌 Senior Network Engineer (Buenos Aires)
🏢 Cognizant
📍 Buenos Aires