Engineer Software
Resume:
Thach Van Nguyen
Richardson, Texas 75082
Cell# 214-***-****
*******@*****.***
SUMMARY
Engineering professional with over ten years of experience in the Telecommunication industry and Wireless Device Testing. A team player with proven effectiveness, and also work independently. U. S. Citizen. Specific strengths include:
Object oriented design (OOD) methodologies
Software Development Lifecycle (SDLC)
Core, Network, Handset test knowledge
Automated/manual test processes
Experience in GSM, CDMA, WCDMA, LTE. Scripting using UNIX, Windows, TCL/TK.
PROFESSIONAL EXPERIENCE
New York Air Brake. Irving Texas 6/2014 – 12/2014
Software Quality Engineer
Test and validate new Software releases for train onboard applications. Duties include:
Review Requirements and Specifications for new software features and functionalities.
Developed test cases to test new features.
Tested, reported, debugged and verified software defects.
Helped developers in investigating, resolving issues. Provided test logs and test analysis.
Supported field test efforts. Verified and replicated bugs reported by field engineers in the lab environment.
Configured, upgraded, maintained software tools, simulators and train onboard computer software.
Ericsson. Richardson, Texas 10/2012 – 3/2014
IOT Engineer, Device Testing
Conducted Certification testing for Smart phones, Wireless Device Terminal and Chip sets on CDMA, EVDO, eHRPD, 4G LTE Networks such as Sprint, Verizon, USCC
Perform RF tests manually on Vendor’s mobile handsets, chip set in live networks. Tested low level applications for Android, iOS, Blackberry smartphones. Radio testing covers Voice and Data Traffic, Inter-system Handovers, TTY and various mobile Call Processing features.
Tested CDMA Call Processing Protocol. Network elements in IOT testing comprise BSC, MSC/VLR, HLR, SMSC, MME, RNC, and PDSN, eNodeB.
Nokia Siemens Networks. Irving Texas 5/2011 – 10/2012
IOT Engineer, Device Testing
Conducted UE, Wireless Terminal testing on GSM Siemens Base Station System (SBS BR10).
Performed RF tests manually on Vendor’s mobile handsets, smart phones, chip set in live networks. RF lab testing covers Voice Quality and Data Traffic, Inter-system Handovers, Cell Broadcast, TTY and basic mobile call processing’s.
Test GSM Call Processing Protocol over the Abis, A, Gb interfaces. Network elements in IOT testing comprise TRAU/BSC, MSC/VLR, HLR, SMSC, CBC, RNC, and SGSN.
Aircom International Inc. Dallas Texas 8/ 2009 – 1/2011
Device Test Engineer
Testing and verifying new Mobile Handsets and Wireless Terminal Devices for AT&T, including 2G/3G//HSPA, RIM, Window Mobile, Android, WCDMA smart phone.
Duties include:
Reviewed and executed AT&T Requirement and Specification 10776 for new Mobile handset.
Performed RF Conformance and Certification tests using manual, automated platforms, and live networks.
Supported customer’s R&D efforts in investigating, debugging and verifying defects. RF feature tests include: ENS, EONS, OTA, MWI, USSD, Femtocell, Network selection.
Test platform consists of Agilent 8960 with (ABP), IT3 Move.
Enter test results and write defect reports to AT&T Mercury Quality Center database.
Maintain Agilent 8960 3G test boxes; Anite SAS test scripts, PCOM scripts to program SIM cards.
Sony Ericsson. RTP, North Carolina 2005 – 2008
Product Verification & Acceptance Engineer
Performed Platform SW Delivery Tests, Network Operator Acceptance Tests (i.e. AT&T 10776), Certification and 3GPP Type Approval for Handsets, Smart phones, Mobile Broadband Devices.
Analyzed and provided fixes for issues reported on UMTS / GSM Network Signaling Stack and SAT/SIM features.
Managed Test Lab and Simulator equipment’s: Racal 6130, R&S CMU, R&S CRTUG/W, Agilent 8960, Anite SAS, Anritsu MD8480 and Spirent, Lauterbach Trace32 debugger, Orga SIM Simulator and Aspects SIM Simulator
SIEMENS Mobile. Boca Raton, Florida 2004 – 2005
RF System Engineer
Responsible for System testing and feature Integration testing of new software releases for Siemens Base Station System.
Carried out RF tests manually using mobile handsets in live network. Testing covers Voice/Data Traffic, Signaling Channels/Switch Control, LAPD Signaling, and Wireless RF In-band Signaling and Voice/Data Traffic between TRAU/BSC, BSC switch/BSC Controller, BSC/BTS and BTS to MS.
Created System test plans, test strategies for SBS Release BR7 and BR8; features included Dynamic Mobile Allocation (DMA), Enhanced EDGE/GPRS Performance Counters, NACC, Extended Uplink TBF.
Performed Siemens Base Station Commissioning, upgrading. Created and configured and tested Cellular Network such as Dual band Standard Cell Extended Cell, Concentric Cell.
Conducted Handset IOT testing with different Handset vendors.
ALCATEL USA, Plano, Texas 1997 - 2002
System Test Engineer
Evaluated and tested software programs to verify that their functionality met specifications. Developed and modified test plan. Evaluated test activities, analyzed test results, report software defects and following through to verifying resolutions to the problems.
Performed Product/Integration testing on several wireless networks elements including MSC, BSC, PSTN, VLR, and HLR. Implemented network protocols such as IS41, SS7, CDMA A interface, and verified the correct Call Processing, and billing information (CDR). Troubleshot, configured, setup MSC Translation database and maintained network links.
Created and reviewed new test cases and test scripts to test new Software release. Developed and debugged testing tools (CTE, DCT, Labsim, SAGE, INET) in a simulated environment.
Implemented Quality Assurance process and methodology. Participated in developing and enforcing testing standards through Fagan inspection procedures. Captured, documented, reported, and analyzed test results using Clear Case Tools (CCT)
DSC Communications Corporation, Plano, Texas 1996 - 1997
Co-op position as System Software Developer
Texas Instruments Inc. Dallas, Texas 1995 - 1996
Co-op position as System Software Developer and Information Specialist
TECHNICAL SKILLS
Telecommunications protocols: CDMA, 1XRTT,EVDO, eHRPD, LTE, GSM, GPRS-EDGE, UMTS, IS41
Radio test equipment: Tektronix K15 Protocol analyzer, RS Signal Generator, Traffic generator, LMT and Siemens SBS 240 series. Anite Agilent 8960, Racal 6103, Aspect 3, IT3 Move.
Programming Languages: UNIX Shell scripts, Tcl / Tk, AT command, Anite SAS script, Microsoft .NET VB6, HTML.
Operating Systems: UNIX, Sun Solaris, HP/UX, Windows XP
Software Tools: Rational Clear Case, MS Office, Mercury Test Director, Tektronix, TEMS, QXDM, QPST, NetHawk, Wireshark
EDUCATION
Bachelor of Degree in Computer Science Dallas, Texas. 1997
University of Texas at Dallas
Microsoft Certified Solution Developer: MCP certified Plano, Texas. 2004
MCSD Certification at Southern Methodist University, School of Advanced Computer Engineering
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