Job Description :
Experienced UK based Specialist Wireless Network Engineer required for a programme of work within National Grid which aims to modernize and enhance the UK network infrastructure to improve reliability, security, and user experience. Key initiatives include replacing end-of-life network hardware, deploying enhanced Wi-Fi solutions, and provisioning high-speed internet connectivity services overlayed with SDWAN technology.
The programme will also progress alternative connectivity options such as satellite and 5G solutions for disaster recovery and rapid deployment, while supporting facility expansion projects.
Comprehensive wireless surveys and design work will be a significant part of this engagement, with ad-hoc travel required to the UK national grid sites to conduct physical Wi-Fi surveys and Desktop surveys with Ekahau tools.
Key Responsibilities
- Design, deploy and optimise enterprise wireless LAN solutions across office and industrial environments.
- 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 new deployments, refresh programmes and upgrade initiatives.
- Support Wi‑Fi lifecycle management including hardware upgrades, software updates and capacity planning.
- Work with stakeholders across IT, operations and platform teams to define requirements and deliver scalable solutions.
- Contribute to standards, best practices, design documentation and knowledge sharing within the network engineering chapter.
Required Skills & Experience
- Strong hands‑on experience with enterprise WLAN technologies (Cisco, Aruba).
- Deep understanding of:
- RF fundamentals (channel planning, power, interference mitigation)
- 802.11 standards including Wi‑Fi 5/6/6E/7
- WLAN authentication (EAP methods, RADIUS, role‑based access)
- Enterprise controllers, cloud‑managed Wi‑Fi platforms and policy engines
- Proficiency with wireless survey tools (Ekahau, Hamina etc.)
- Experience with Cradlepoint, or similar 5G cellular‑enabled networking platforms
- Experience supporting large‑scale Wi‑Fi environments in complex organisations.
- Experience with ISE and Aruba ClearPass for 802.1X, RADIUS, profiling and role-based access
- Ability to interpret network analytics, performance data and incident trends.
- Excellent communication skills and comfort engaging with both technical and non‑technical stakeholders.
- Able to travel ad-hoc to National Grid locations for onsite pre and post deployment Wi-Fi surveys
Desirable Certifications
- CWNP (CWNA, CWDP, CWSP, CWNE)
- Cisco Wireless (CCNP/CCIE Wireless)
- Aruba Expert (ACMP, ACDP, ACCX)
Skills Required
- Strong hands-on experience with enterprise WLAN technologies, including Cisco and Aruba
- Deep understanding of RF fundamentals, channel planning, power management, and interference mitigation
- Knowledge of 802.11 standards, including Wi-Fi 5, Wi-Fi 6, Wi-Fi 6E, and Wi-Fi 7
- Experience with WLAN authentication, EAP methods, RADIUS, and role-based access
- Experience with enterprise wireless controllers, cloud-managed Wi-Fi platforms, and policy engines
- Proficiency with wireless survey tools such as Ekahau or Hamina
- Experience with Cradlepoint or similar 5G cellular-enabled networking platforms
- Experience supporting large-scale Wi-Fi environments in complex organizations
- Experience with Cisco ISE and Aruba ClearPass for 802.1X, RADIUS, profiling, and role-based access
- Ability to interpret network analytics, performance data, and incident trends
- Excellent communication skills and ability to engage technical and non-technical stakeholders
- Ability to travel ad hoc to National Grid locations for onsite Wi-Fi surveys
- CWNP certification, such as CWNA, CWDP, CWSP, or CWNE
- Cisco Wireless certification, such as CCNP Wireless or CCIE Wireless
- Aruba Expert certification, such as ACMP, ACDP, or ACCX
What We Do
Test Triangle is a Dublin-headquartered technology services company founded in 2012. It helps organizations transform operations through IT service management, digital transformation, software testing and quality assurance, cloud solutions, consulting, managed services, and recruitment. The company also provides application testing, DevOps, robotic process automation, software and mobile development, technology training, staffing, and resource augmentation across Ireland, the UK, and international markets.
