App and Service Testing & LTE
Location: Redmond, WA
Experience with Wireless Data Core networks, Architecture, Protocols and Interfaces
Mobile Core Network which includes MME, SAEGW and PCRF in a hybrid environment (native with virtual)
Hands on experience with Device testing.
MCPTT/EPTT platform/network/call flow knowledge
Good understanding of Wireless Operator end to end Network
Experience with LTE core system interfaces and protocols such as S1-MME, S1-U, S6a, S11, S5/S8, Rx, NAS, S1-AP, RRC, GTPv2c, GTP-U, SGs-AP is desired
Excellent Understanding of 3GPP standards and protocols like GTPV2, Sip and Diameter.
Experience in IMS Core entities (Knowledge of P/I/S-CSCF, HSS, SLF) and VoLTE.
IMS call flows (expertise in SIP based call flows) - Voice and Supplementary services.
Expertise in creating test plans for system level, subsystem level and feature level testing.
Understanding of Software Testing Life cycle
Good Knowledge in TCP/UDP/SCTP, IP protocols.
Job Types: Full-time, Contract