Software Engineer Full Time

Gangaram Patidar

(Address) Seattle, USA

442-***-**** • ***************@*****.***

Summary: A Software Engineer with 4.10 years of experience in Telecom domain. Having good experience in Development, debugging and testing of LTE and UMTS/GSM VOLTE/IMS features. Good exposure to the Rel-8 3GPP specification like MAC, RLC and RRC, Have strong experience in C/C++,UNIX, scripting language, bug fixing, analytical skills with Software Development Life Cycle

Technical Proficiency:

Telecom

GSM/CDMA/UMTS, LTE, IMS and VoIP

OS & RTOS

Linux,Windows, ARM, OpenWRT

Languages

C, C++, Java, JQuery, Python 3.3 and Shell scripting

Protocols

TCP/IP, RTP/RTCP, SIP, SDP, IEEE 802.11, OSPF, RIP, TR069

Networking

VLAN, DMZ, STP, RSTP

3GPP Specifications

3GPP TS 24.229 and 3GPP TS 34.229, IR.92 (VoLTE), IR.94(VT)

RFC 3261, RFC 4975, RFC 4976, 36.321, 36.213

Tools

QXDM, QCAT, GCC, make, CVS, Wireshark, Git repository, JIRA, MySQL

Debuggers

GDB, ANT

IDE

Microsoft Visual C++ 6.0, Microsoft Visual Studio 2008 (simulator debugging environment).

Professional Experience:

Engineer I in Qualcomm Inc., Seattle, (USA) [Feb 2015- To-Date] (Global Edge Software Inc. Milpitas, CA, USA, on deputation)

Modem System Test Engineer:

Participated in Qualcomm Chipset Certification(LTE/VoLTE/hVoLTE/SRLTE/VoWiFi) for Various IOTs - AT&T, Verizon, TMO and Sprint

Testing and verifying VoWiFi, VT over Wi-Fi offload, E911 over Wi-Fi

Testing and verifying IMS registration, Voice over LTE, E911 and VT

Inter-operability testing on various RATs such as GSM, CDMA/UMTS and LTE

Testing and verifying IRAT Handovers, hVoLTE, SRLTE, SRVCC, CSFB, Inter/Intra Frequency HO, Small Cell

Developing/executing test strategies and test plans for CDMA, hVoLTE, VoLTE, VT and VoWiFi

Debugging and testing of VOLTE, VT, VoWiFi, IRAT HO and RCS/UCE features with different Qualcomm chipset

Debugged and reported IMS related registration, voice and video issues using SIP,RTP and RTCP

Regression and sanity checks on various Qualcomm chipsets

Supporting customers with products commercialization

Worked with different teams of MST to troubleshoot issues

Automation scripts using Python for build setup and testing

Environment:

oLanguage : C, Python

oTools: QXMD, QCAT, GDB, Wireshark, Crash Analyzer, JTAG, APEX

oIssue Tracking tools : Prism, Jira, Bugzilla

Sr. Software Engineer in Global Edge Software Ltd. Bangalore (India) [Aug 2014 – Jan 2015]

VoLTE Prototype and LTE E-UTRAN Protocol Stack Simulation:

VOLTE prototype interworking with Small Cell

Understanding the 3GPP TS 34.229

Enhancements/Bug fixing in Volte call controller with respect to following Volte features :

oSubscribe – Notify

oSIP Call Initiation and Termination

oSupplementary services like Call Hold, Call Forward, Call Transfer

Enhancement/Bug fixing using C Programming

Preparing the test scripts and Test execution.

Understanding of EPC modules i.e eNB, MME, SGW and PGW

Understanding of RLC, RRC, S1 AP, EMM and ESM

Unit Testing and Fixing issue related to NAS Module

Environment:

oLanguage : C, Python

oTools: QXDM, GCC, GDB, Make, Wireshark

Software Engineer in Global Edge Software Ltd. Bangalore (India) [Sep 2013 – Jul 2014]

OpenWRT based Residential-Gateway:

Implementation of DMZ on OpenWRT

Customize open source GPSD application and integrate with OpenWRT using C programming

Porting of OpenWRT on Beagle Board and Panda Board.

Configured the OpenWRT as a router.

Implement GES Gateway UI for Residential Gateway features using Python Scripting

Bring up LTE-4g stack on OpenWRT: Enable the LTE-4g stack on OpenWRT to perform routing between LAN and WAN.

Configure the static routing and NAT on OpenWRT

Implementation Firewall Rules for WAN, LAN and WiFi Interface on Router

Environment:

oPlatform : Linux, OpenWRT, TI Beagle Board, Panda Board

oLanguage : C, Python 2.7

oTools: GCC, GDB, Make, Wireshark, Traceroute

Software Engineer in Global Edge Software Ltd. Bangalore (India) [Oct 2012 – Jul 2013]

Private Cloud with Cloud Stack:

Installation, Configuration, Design and Development

Customization of the Cloud Stack Portal to Company standards

Registration of New user to Cloud Stack Portal, Registration includes Auto-emailing credentials

Implementation of A Module to Provide information of Hypervisor in cluster with Virtual machine

Running. Statistics involved CPU Utilization and memory consumption of the hypervisor

Implementation of Solution Pack involves Hadoop Framework and online exams

Analysis and Testing of designed and configured tools required for private cloud

Environment:

oPlatform : Linux, Windows, virtualization Software ( XenServer, ESXI, KVM)

oLanguage : Java, jQuery, HTML, CSS, Python

oTools: Apache Cloud Stack, MySQL,VMWare

GESL Training program

Global Edge Software Ltd Duration: 6 Months

C and Data Structure

Python Programing

Software Engineering

UNIX programming FMS, PSM, IPC and

Networking [TCP/IP protocol suite]

Socket Programming

Knowledge on Various Unix commands and System Calls

Personality Development [Self Awareness, Time Management, Team Work]

Education

Year

Degree

Institution

Percentage/CGPA

Full Time/Part Time

July 2007- May 2011

BE

RGPV UNIVERSITY BHOPAL

75.11%

Full Time

Awards and Recognitions

GESL Feather in the Cap Award - 2014

Best Team Award – 2015

Best Contributor Award - 2016

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