Telecom IMS test Engineer with 4.5+ years of experience

AJAY KUMAR CHAURASIA

Test Engineer IMS Core EPC VoLTE LTE

*************.**@*****.*** +91-926******* Noida, India PROFESSIONAL SUMMARY

Telecom Test Engineer with 4.5+ years of experience in EPC/IMS’S testing, IMS node deployment, and log analysis. Hands-on expertise in end-to-end VoLTE call flow testing, SIP/IMS protocol analysis, and troubleshooting of registration, call-drop, and call-failure issues. Strong working knowledge of LTE, IMS architecture and nodes (CSCF, TAS, HSS, MME, SGW, PGW, PCRF). Skilled in protocol tracing with Wireshark and Linux-based tooling, ATP validation, and test documentation.

TECHNICAL SKILLS

Networks & Technologies: LTE, IMS, VoLTE, EPC, Diameter IMS / Core Nodes: CSCF, TAS, HSS, MME, SGW, PGW, PCRF Protocols & Interfaces: SIP, Diameter, X2, S1-U, S1-C, S11, S5/S8 Call Flows: IMS Registration, IMS-to-IMS, Conference Call, Call Transfer, CS-PS / PS-CS Tools: Wireshark, MobaXterm, PuTTY, WinSCP, Google Earth, MS Office Test Activities: Log & Trace Analysis, Protocol Testing, ATP Validation, Test Case Design & Execution, MME & TAC Creation & Validation, Drive Test Analysis.

PROFESSIONAL EXPERIENCE

Gauri Telecommunication Pvt Ltd April 2024 – June 2026 Test Engineer

• Perform daily trace capturing and log analysis for LTE and VoLTE services, including CSFB scenarios.

• Execute end-to-end VoLTE call-flow testing across IMS registration, IMS-to-IMS calls, multi-user IMS conference calls, CS-PS / PS-CS, call transfer.

• Conduct SIP/IMS protocol testing and VoLTE log analysis to identify and resolve call-failure, call-drop, and registration issues.

• Configure, test, and validate EPC/IMS nodes in new environments and verify compatibility with existing systems.

• Perform ATP validation and execute test cases alongside clients, maintaining documentation of all test results. Tools: Wireshark, Ubuntu, STS, WinSCP, PuTTY, MobaXterm. Multi Wireless Technologies Pvt Ltd February 2021 – August 2023 Test Engineer

• Tested and troubleshot LTE core-network interfaces including X2, S1-U, S1-C, S11, and S5/S8.

• Prepared and executed test cases based on project requirements.

• Prepared, updated, and maintained activity reports and summary reports.

• Owned end-to-end deployment and troubleshooting in coordination with the team.

• Applied knowledge of SIP and IMS headers and their use in real network scenarios.

• Conducted single-site drive tests, cluster drives, and drive-test analysis; raised and tracked defects found during execution.

Tools: Wireshark, PuTTY, WinSCP, Google Earth, MS Office. EDUCATIONS

• B.Tech, Electronics & Communication Engineering — UPTU, Lucknow 2015 62.4%

• Intermediate (Class XII) — Uttar Pradesh Board 2008 61%

• High School (Class X) — Uttar Pradesh Board 2006 65% ADDITIONAL INFORMATION

Languages: English, Hindi Date of Birth: 20th March 1992 Location: Noida, India

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