5G Core Network Tester

Role - 5G Core Network Tester Location - Redmond, WA Skills Required Expert knowledge of 5G SA, NSA and LTE call flows from a E2E perspective (Device RAN Core Network). Expert knowledge of the call flows of services and features such as Voice, Messaging, UCE, UT, USSI, HTTP, VoLTE, VoWiFi, IR92, IR94, AS262 HO, WPS, RTT, N11, International Wi Fi and S8HR. Expert knowledge of VOIP protocols such as SIP, Megaco /H.248, MGCP, DNS, LNP, TCAP, SDP, RTP, DIAMETER), IMS (Audio/Video call signaling, Instant Message, RCS, Presence, Subscription), VoNR, VoLTE / LTE EPC Expert knowledge of 5G and LTE EPC core protocols such as GTPV2C,GTPV1C, GTPV1U, S1AP Experience with and understanding of how NATing and Proxy functions work in a packet core and the implications for connectivity (routing and firewalls) to services platforms Excellent Troubleshooting skills. Strong communication skills (written and oral) and intercultural communication abilities. Ability to articulate complex issues, concepts, solutions, and standards clearly. Experience with automated testing including simulation and Real UE automation. Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.

Created: 2026-03-05