Wireless Engineer

Unison Systems is seeking a Wireless Engineer to join our client's team in the Denver Tech Center. This is a 12-month hybrid contract role (4 days on-site) paying $70/hour. You'll work with a strong development team on carrier-grade wireless infrastructure supporting Wi-Fi offload and secure roaming technologies.

Responsibilities:

Design and implement AAA (Authentication, Authorization, and Accounting) policies and databases for carrier-grade Wi-Fi environments Configure and manage Wi-Fi Passpoint (Hotspot 2.0) and OpenRoaming solutions for seamless network roaming Build and optimize SQL and NoSQL databases to handle high-volume authentication transactions and session management Implement and maintain security protocols including IPsec, TLS/RADSEC, and certificate management Configure DHCP, DNS, and IP address management solutions for dynamic Wi-Fi environments Set up and manage carrier-grade AAA platforms such as Nokia AAA and FreeRADIUS Test EAP-SIM and EAP-AKA authentication flows using network simulation tools Design secure tunneling solutions using EoGRE or IPsec for access point-to-core routing

Requirements:

In-depth knowledge of RADIUS authentication and EAP methods (EAP-SIM

RFC 4186, EAP-AKA RFC 4187

) Strong SQL and NoSQL database design and management experience, including high-availability architectures (e.g., MySQL Master/Slave) Proficiency with Wi-Fi Passpoint (Hotspot 2.0) configuration and Wireless Broadband Alliance standards Experience with carrier-grade AAA servers and session management systems Working knowledge of IPsec, TLS/RADSEC, and certificate management Familiarity with DHCP, DNS, and IPAM solutions Experience with network simulation and testing tools (Spirent, Ixia, Calnex, or equivalent) Understanding of EoGRE and IPsec tunneling technologies Ability to design systems handling high transaction throughput with low-latency requirements Unison Systems is Colorado's leading IT staffing and engineering consulting firm - apply today and let us put our 27 years of expertise to work for you.