<p>Tech Mahindra Network Services has an opening for an Engineer - Test Execution Core in Philadelphia, PA or Redmond/Seattle WA. Experience with Spirent Landslide, Keysight / Ixia LoadCore or similar tools.</p> <ul> <li>Years of Experience: 5 years </li><li>Testing Tools: Spirent Landslide, Keysight / Ixia Loadcore </li><li>Operating System: Linux, Solaris, Windows </li><li>Scope, define and design solution offerings; driving end-to-end technical solutions in pre-sales engagements supporting Customer Unit and Engagement Practices organizations. </li><li>Analyze customer technology, define business requirements and participate in risk analysis. </li><li>Work with technical team on preparing test strategy, test plan and test cases for LTE-EPC and VoLTE solution. </li><li>Develop test scripts using third party tools, execute test scenarios and update test results in Test management system. </li><li>Define feature requirements for CORE and RAN orchestration functions to support Comcast use cases and architecture requirements defined on Service Based Architecture. </li><li>Engages with multiple vendor personnel regarding new services and features required of 5G NFs on a Centralized and Edge Data centers. </li></ul> <p>Job Requirements</p> <ul> <li>Strong knowledge in LTE/UMTS/GPRS with basic IMS knowledge is desired. 5 yrs experience working in wireless telecommunications. </li><li>Experience with Telco Core networks, Architecture, Protocols and Interfaces </li><li>Good understanding of Wireless Operator's end-end Network </li><li>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 </li><li>Working Knowledge in any of UMTS/GPRS Protocols such as NBAP, RNSAP, RANAP, BSSAP+ and GTP is preferred </li><li>Must have good working knowledge on VoIP, SIP & IMS. </li><li>Strong Understanding of IMS network architecture and various interfaces like Mw, Mr, Mx, Sh, ISC etc. </li><li>Must have good hands on experience on various end to end call scenarios, roaming cases and supplementary service features in IMS network. </li><li>Good hands on experience on debugging and troubleshooting of P/I/S-CSCF servers in IMS core network. </li><li>Excellent Understanding of Rel 6/ Rel 7/ Rel 8/Rel 9 3GPP standards </li><li>Expertise in creating test plans for system level, subsystem level and feature level testing </li><li>Understanding of Software testing Life cycle </li><li>Good Knowledge in TCP/UDP, IP protocols and understanding of basic OSI model </li></ul>