Senior Contractor

Description Voice Core network (IMS/CS) 3-year experienced engineer;Experience working with IMS Voice/VoLTE core nodes such as SBC, x-CSCF, TAS (MMTel-AS, SCC-AS, IP-SM-GW, IM-SSF), BGCF, MGCF, and MRF;Experience working with CS Voice/VoLTE core nodes such as: MGW, MSC, MGCF, IM-MGW;Experience analyzing IMS voice-related flows and procedures (e.g., VoLTE-VoLTE call, T-ADS, Homing, Break-in call, Break-out call);Knowledge of the parameters that compose the subscriber's profile in HSS/HLR and their impacts on the network behavior;Comfortable with VoLTE-related protocols (e.g., SIP, Diameter, DNS, H248, Camel, RTP/RTCP);Comfortable with VoLTE/VoWifi concepts and architecture;Preferable: experience with virtualized environments (NFV/SDN, Containers, Kubernetes, etc.).Preferable: experience with signaling transfer elements (e.g., DRA, STP)Preferable: experience with DNS/ENUM and Number Portability (NP);Preferable: experience with HSS, HLR and CuDB;Preferable vendors: Ericsson/ Mavenir/ Nokia/ Huawei;Skills & ExperienceBackbone Network, Building Architecture, SignallingCyient is an Equal Opportunity Employer.Cyient recruits, employs, trains, compensates, and promotes regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, veteran status, and other protected status as required by applicable law. We are proud to be a diverse and inclusive company where our people can focus their whole self on solving problems that matter.