5G Core Network Tester

Role - 5G Core Network Tester Location - Redmond, WA Permanent Salary -K/Annum Contract-/Hr Customer:- ATnT 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. The pay range for this role is-per annum including any bonuses or variable pay.also offers benefits like medical, vision, dental, life, disability insurance and paid time off (including holidays, parental leave, and sick leave, as required by law). Ask our recruiters for more details on our Benefits package. The exact offer terms will depend on the skill level, educational qualifications, experience and location of the candidate. is an Equal Employment Opportunity employer. We promote and support a diverse workforce at all levels of the company. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex, age, national origin, or disability. All applicants will be evaluated solely on the basis of their ability, competence, and performance of the essential functions of their positions with or without reasonable accommodations. Reasonable accommodations also are available in the hiring process for applicants with disabilities. Candidates can request a reasonable accommodation by contacting the company ADA Coordinator at.

Created: 2026-03-06