Senior Wireless Network Engineer - WLAN & 5G/SD-WAN

Test Triangle; Warwick; On-site; GBP 65,000 - 90,000; Full time

Job summary

Test Triangle seeks an experienced UK-based Specialist Wireless Network Engineer for a National Grid programme to modernize and secure the UK network infrastructure. The role covers design, deployment, surveys, and BoM creation across office and industrial sites.

You will work with Cisco/Aruba WLAN, RF planning, 802.11 standards, and 5G/Cradlepoint solutions, traveling to National Grid locations for onsite surveys and validations, and collaborating with IT, operations and platform teams.

Qualifications

• Extensive hands-on experience with enterprise WLAN (Cisco, Aruba).
• Strong RF fundamentals and 802.11 knowledge.
• Experience with enterprise controllers and cloud-managed Wi‑Fi.
• Proficiency with Ekahau and other survey tools.
• Experience with 5G networking platforms.
• Experience with ISE and Aruba ClearPass for 802.1X.
• Ability to analyze network data and trends.
• Excellent communication with technical and non-technical stakeholders.
• Willingness to travel to National Grid sites for onsite surveys.

Responsibilities

• Design, deploy and optimise enterprise WLAN across offices and industrial sites.
• Conduct wireless surveys (predictive & on-site), RF analysis and coverage optimisation.
• Lead troubleshooting for complex Wi‑Fi issues, including authentication, interference and performance degradation.
• Create and update Low-Level Designs (LLDs) for Wi‑Fi, NAC and related network services.
• Produce accurate Bill of Materials (BoM) for deployments and upgrades.
• Support Wi‑Fi lifecycle management including hardware and software updates.
• Work with IT, operations and platform teams to deliver scalable solutions.
• Contribute to standards, best practices, design documentation and knowledge sharing.

Skills

WLAN technologies

RF fundamentals

802.11 standards

Cloud-managed Wi‑Fi

Survey tools

5G networking

ISE & ClearPass

Network analytics

Stakeholder communication

Travel readiness

Tools

Ekahau

Hamina

Cradlepoint

Aruba ClearPass

ISE

Job description

Test Triangle seeks an experienced UK-based Specialist Wireless Network Engineer for a National Grid programme to modernize and secure the UK network infrastructure. The role covers design, deployment, surveys, and BoM creation across office and industrial sites.

You will work with Cisco/Aruba WLAN, RF planning, 802.11 standards, and 5G/Cradlepoint solutions, traveling to National Grid locations for onsite surveys and validations, and collaborating with IT, operations and platform teams.