test lead engineer

TechDigital Corporation

United States

about 2 months ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Experience required

6 years minimum

Working hours

Regular working hours

Job source

dice.com

Tech stack

Universal Mobile Telecommunications Systems LTE (Telecommunication) VoIP Unix Software Debugging Domain Name System (DNS) Internet Protocol Internet Protocol Security (IP SEC) IPv4 IPv6 Python (Programming Language) Lightweight Directory Access Protocols (LDAP)

+5 more

Selenium TCP/IP Wireshark Scripting Real-Time Transport Protocol

Requirements

Cognizant is looking for a test lead engineer that has 6-8 years experience SIP, IMS Core, VoLTE/CVoIP call flow process for testing and validation. Following skills/experience required:

Strong knowledge in 5G/LTE/UMTS
VoLTE/IMS Network Performance and Capacity Test and IMS Nodes Performance Benchmarking Activities.
Extensive Hands on experience with VoLTE/IMS Call Processing and VoLTE/IMS Supplementary Services.
Need to have hands on experience IMS Related Protocols Signaling Analyzing (VoLTE/IMS, VOIP Call Flows (SIP/SDP/H.248 etc.) using Iris Analyzer and RADCOM .
Working experience on IMS interworking entities (BGCF, MGCF, MRFC, MRFP, AGW, IBCF, TrGW) and interfaces.
VOIP / IMS call flows (expertise in SIP based call flows) - Voice and Supplementary Services.
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, Gn, Gx, Ga, Sy is desired
In-depth understanding of Telecom Protocols and technologies like GTPV2,SIP, RTP, IPv4 and IPv6, DIAMETER, DNS, H.248, IPSec, TCP-IP, LDAP, etc.
Design & Troubleshooting experience in VoLTE E2E Call Flows and RCA Debugging Skills and IP Network design, planning and optimization
Scripting experience on any language like Python/Unix/Selenium and hands on experience on Android adb command for automation and taking device logs
Tool Experience on Wireshark,QXDM,RADCOM,IXIA,EXPO,LANDSLIDE etc

Top Skills:

IMS call flows
Telecom Protocols and technologies like GTPV2,SIP, RTP, IPv4 and IPv6, DIAMETER, DNS, H.248, IPSec, TCP-IP, LDAP, etc.
IMS interworking entities (BGCF, MGCF, MRFC, MRFP, AGW, IBCF, TrGW) and interfaces