DISEN CHITILAPILLY DEVASSY

Email id: disencd@gmail.com

Ph. No: 858-397-3190

 

TELECOM AUTOMATION ENGINEER

 

Summary:

Passionate professional with 4 years’ experience in the telecom field. Experienced in both wireless and application protocol stacks. Extremely comfortable working within team oriented goals or individually working on projects. Excellent organization, communication & technical problem solving skills. A proven track record of consistently handling multiple activities with high level of competency. Experienced working on projects that have critical deadlines while working with minimal supervision.

 

 

Highlights of expertise:

 

·   Automation expertize in various Qualcomm Chipsets

·   Volte, IMS, RTP & RTCP, SDP, LTE L2 -L3.

·   Android & Windows Mobile platform.

·   Debugging Customer issues for telecom operators.

·   Bringing up the new Modem chipsets with the Apps for the telephony.

 

Technology expertise:

 

·   Languages: C, Perl, Python

·   Technologies: LTE rel8-10, IMS/Volte, VT, ePDG/Wi-Fi Offloading, SIP, RTP/RTCP

·   Platforms: TCP/IP, Linux

·   Skills: Ice Server, Radvision, SIPP, GDB, Log Debugging

·   Tools: QXDM, Apex, QPST, Wireshark, Prism, Jira, Tshark

 

Education and Training

 

·   Bachelor of Engineering – Anna University, India (2007-2011)

·   Training – Global Edge Software Ltd, India (Dec 2011 – Apr 2012)

 

PROFESSIONAL EXPERIENCE

 

 

QUALCOMM INC, SAN DIEGO

 

Involved in developing, designing & testing the automation framework for IMS-VoLTE in MDM & MSM Qualcomm Chipset Solution. This framework is used to automate the complex end to end modem scenarios for execution, log collection, & post-processing of the logs.

 

Roles and responsibilities:

·                       Developed the post-processing tool LAF (Log Analysis Framework) that analyzes the modem log & displays the Testers relevant information in a tabular format.

·                       Key player in development of LDT (Log Decision Tree) tool that validates the VoLTE test case results from the log. 

·                       Developing Test cases for various MDM (9x35, 9x45) & MSM (8952, 8992, 8996, 8974, and 8909) chipsets.

·                       Improving the understanding of the system architecture and the impact analysis.

·                       Writing automation test cases for various Conference call flows, early media, Precondition, Forking, RTP/RTCP & SDP scenarios.

 

 

 

 

 

 

GLOBAL EDGE SOFTWARE PVT LTD, BANGALORE

Development & testing of L2 & L3 layers in the Small Cell prototype on Freescale Board.

Roles and responsibilities:

·                       Responsible for developing the RLC and NAS layer in eNB.

·                       Played an intricate role in the integration of RLC layer within the LTE protocol stack.

·                       Accountable for the enhancement of the error correction through ARQ, segmentation, concatenation, reassembly of PDU's, HARQ reordering, Re-segmentation & duplicate detection implementation.

·                       Lead the sanity testing of RLC in the LTE stack.

·                       Drove the implementation and testing of NAS/ESM Messages.

 

 

 

 

Working History: