SUMMARY:

• Sr. software engineer with over 20+ years experience in full product lifecycle in Computer Networks, Telecom (Wireless and Wireline) and IT products.
• Performed roles in system engineering, software design, development, test automation, integration, system testing, customer installation/deployment, user documentation and live customer support. Strong experience in 802.11 WiFi wireless networks, NGN WCS/MGW, HLR, MPC, SCP. Knowledge of 802.11, IS41, GSM/GPRS/UMTS, INAP, MAP, TCAP, ISUP, BSSAP, SCCP, CS1R, and AIN 0.2 protocols. Extensive experience in C++, C, Python, Tcl, Expect, Rest, XML, Unix shell script, MATLAB, SQL script and Java.
• Familiar with Unix/Linux, Windows, Macs and VxWorks.
• Database experience in Sybase, Oracle, Objectivity, MySQL and HeidiSQL.
• Strong experience in Mobile App feature requirements specification and testing on Android phone/tablet platform.

PROFESSIONAL EXPERIENCE:

Confidential, Richardson, Texas

Sr. Test Automation Engineer

Responsibilities:

• Closely worked with TMO SDDI, SCM and traffic engineering teams to decide database migration strategies in Mobility Management, Signaling Gateway, ISUP/UTRAN/IMS, SIP/BSS/CAS Trunk Groups, Voice/Video Codecs Profile, Routing, Route List, MGW 7540/7549, and WMG InterConnections.
• Ensured Data and CLI accuracy and consistency in the areas of neighbor MSC/VLR, LAC/Cell, Emergency (E911) service calls, SS7/SIGTRAN Linksets and Links, Cross Connections, BSC/RNC Deployment, IP Connectivity Route add/modify/test.
• Created, tested and debugged CLI scripts generated by ADAMs tool in a Linux/Unix test lab environment and packaged final CLIs for target WCS.
• Conducted database difference comparisons and analysis, and created DB Diff CLIs for target WCS.
• Conducted cutover activities on operator T - Mobile’s live switch for live database migration/provisioning in multiple maintenance windows arranged and approved by TMO customers.
• Reviewed, tested and executed Re-home MoPs(Method of Procedures) for WMG 7540/7549 and worked closely with R&D engineers to resolve issues in MOPs and ADAMs tools.
• Strong understanding of Confidential platform of ALU 5060 WCS, EMS (Element Management Systems) and understanding of the database structures
• Mentored and trained multiple new-hire engineers in multiple cycles.
• Co-authored/upgraded a template for Rehome daily progress milestone report.

Training Curriculum W riter/Coordinator

Confidential

Responsibilities:

• Designed training Curriculum and coordinated and conducted weekly cross training within a 30+ services/operations engineers team, in 2G/3G/IMS/LTE/VoLTE areas.

Principle Systems Engineer/Test Team Lead/Customer Support Lead

Confidential

Responsibilities:

• Calling Name Service ( Confidential ) Feasibility Study for Metro-PCS. Proposed cost saving and optimization solution for wireless operators to reduce costs from LIDB.
• Engaged in development of FRS for Intelli-Agent, designed initial MySQL database tables for Android API based use cases.
• Studied and selected classes and functions in Android API, developed prototype Android codes and test run in voice call, video and audio call (SIP/IMS/VoLTE/LTE calls), RF signal measurements, location, picture, and SMS text message, debug Android app codes using Eclipse and DDMS. Developed test plan for use cases.
• Engaged in feature requirements and high level design in a Field Force Application product in both server user interface, database design and client user interface and function design in an Android mobile platform application. Developed integration and system test plan. Debug Android apk load, backup/restore database. Worked with customer End-to-End for Field testing, remote diagnosis customer client load issue.
• Reviewed various Business Intelligence reporting tools. Trained and engaged in BIRT tool customization.

Confidential, Plano, Texas

Translator

Responsibilities:

• Helped for Sevis to buy out a partial Chinese company and products.
• Translated many technical and business documents from Chinese to English or vice verse.
• Attended regular conference calls to interpret for both sides.

Confidential, Plano, Texas

Sr. Software Engineer, IT Administrator

Responsibilities:

• Developed and administered databases for vendors and products for purchasing and customers for sales.

Confidential, Plano, Texas

Technical Team Lead/Sr. Software Engineer

Responsibilities:

• Technical team lead for a 10+ members project for a wireless Location Based Service and E-911 service. Co-developed FRS, designed/developed/tested service messages from pseudo codes to service SLPs based on Confidential -036A and PN-4747(IS-881), for HLR, MPC and PDE.
• Optimized and tested wireless core network services in IS-41 HLR.
• Conducted requirement analysis for GSM/GPRS-136 HLR for AT&T wireless services.
• Designed/developed/tested features of Confidential /CNAR based on IS-764/IS-771 WIN and GR-1188 CORE.
• Conducted feature enhancement feasibility investigations based on protocols of SIP/CALEA/CAMEL/Diameter.
• Developed Quest HLR Service Enhancement Test plan.

Confidential

Sr. Software Engineer

Responsibilities:

• Integration team lead for a 20+ member project of “SBC CTS, GUI and Billing Enhancement Release 1.0”, authored the Integration Test Plan, and managed integration tests with different sub-systems.
• Designed, developed and tested SMS, SCP, Confidential sub-systems.
• Designed, developed and tested AIN services (VPN, Account Code, 8XX) in ALU 8790 AS, developed Integration Test Plan for these services.
• Developed FRS for “Allstream TollFree Service R1.4 STS Value and Feature Tracking”.
• Worked on Confidential system upgrade and developed “ Confidential Release 7.x Installation Guide”.
• Developed VPN Service and Account Code Service Design Specifications.
• Developed Mercury SMS Service, Subscription, and Subscriber subsystems. Wrote Unit test plans for them.
• Designed and developed SCP/SN X.25 Test Driver Design Specification.
• Co-developed “Infusion Confidential Training Guide”.

Confidential, Plano, Texas

Sr. Software Engineer

Responsibilities:

• Designed, developed and tested DICOM Toolkit Generic Validation subsystem. Author of a US Patent.

Confidential, Honolulu, HI

Software Engineer/Technical Lead

Responsibilities:

• Analyzed, designed, developed and tested a PC repair expert system.
• Managed and developed an “Autonomous Underwater Vehicle for Deepsea Borehole Reentry (AUV)” project
• Designed and developed a CD-I title for “Hawaii Energy Challenge” Project. Manager of Instrumentation Lab.

Confidential, Honolulu, HI

Post-doctoral fellow

Responsibilities:

• Research and publication in Artificial Intelligence, especially in knowledge acquisition, and representation, expert system methodology, neural network learning.
• Lecturer of “Machine Intelligence Programming” for Spring’92, EE467, Department of EE, Confidential