Senior Wireless Network Engineer (CWNA / CCNP Wireless)

Unisys

São Paulo, BRonsitePosted Jul 8, 2026
Posting intelligenceActively listedReposted 8×, possible evergreen/ghost posting

Skills

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About the role

What success looks like in this role:

We are looking for a Wireless Subject Matter Expert with deep expertise in WLAN design, RF engineering, and enterprise wireless infrastructure, complemented by solid LAN/WAN knowledge and specialized Cisco skills. The role centers on designing, implementing, and managing modern, scalable wireless network environments while supporting high-availability systems across security and cloud-based architectures.

The ideal candidate holds a CWNA (Certified Wireless Network Administrator) and/or CCNP Enterprise Wireless certification and brings hands-on experience deploying and optimizing enterprise Wi-Fi solutions in critical 24x7 environments. They will serve as the go-to wireless authority for clients, internal teams, and global vendors - leading projects from assessment through delivery.

Key Responsibilities:

Wireless Design & Deployment: Architect, implement, and optimize enterprise WLAN solutions including site surveys (passive/active/predictive), RF planning, AP placement, and controller configuration across Cisco and Cisco Meraki platforms.

Network Design & Support: Design and support broader network infrastructures (LAN, WAN, SD-WAN) with wireless as the primary domain. Provide both remote and on-site support ensuring high performance and security.

Troubleshooting & Optimization: Diagnose and resolve complex wireless issues including RF interference, roaming problems, coverage gaps, and client connectivity across all OSI layers. Collaborate with manufacturers for escalations.

Client Interaction: Lead client-facing engagements, delivering wireless assessments, RF reports, heatmaps, and project presentations. Act as the primary technical point of contact for wireless initiatives.

Project Execution: Drive wireless network and security projects in collaboration with global teams and vendors, ensuring successful delivery in mission-critical environments.

You will be successful in this role if you have:

You Will Be Successful in This Role if You Have:

4–6 years of experience in enterprise wireless networking, including design, deployment, and support.

Certifications (Required):

CWNA (Certified Wireless Network Administrator) - vendor-neutral wireless expertise

and/or CCNP/CCIE – Wireless.

Wireless & Networking Expertise:

Deep knowledge of 802.11 standards (Wi-Fi 5/Wi-Fi 6/6E), RF fundamentals, spectrum analysis, and wireless security protocols (WPA3, 802.1X/EAP, RADIUS).

Hands-on experience with Cisco WLC and Cisco Meraki wireless management.

Experience with wireless security frameworks including rogue detection, WIPS/WIDS, and guest network segmentation.

Technical Competencies:

Proficient in cloud and network management platforms: SolarWinds, ServiceNow, Infoblox , and similar tools.

Strong grasp of network monitoring, performance baselining, and wireless optimization techniques.

Familiarity with ITIL service management frameworks.

Other Requirements:

Ability to work in 24x7 critical environments , including on-call availability outside regular business hours and weekends.

Strong presentation and reporting skills, ability to communicate RF data, heatmaps, and wireless assessments to both technical and non-technical stakeholders.

Bachelor's degree in a technology-related field (Telecommunications, Computer Science, or equivalent).

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