Qinghua Liu

Principal Software Engineer at Esri

Redlands, California, United States

About

Experience

  • Esri (Redlands, California, United States)
    • Principal Software Engineer
      Jan 2025 - Present · 1 yr 6 mos

    • Senior Software Engineer
      Jun 2018 - Dec 2024 · 6 yrs 7 mos

  • Nippon Koei (15 yrs 6 mos)
    • Senior Software Engineer
      Dec 2006 - Jun 2018 · 11 yrs 7 mos

      • Designed and implemented the web mapping system to publish maps created by NK-GIAS online • Implemented spatial index to improve the spatial query performance • Implemented external algorithms to deal with huge datasets • Designed and implemented spatial reference object model as a Component Object Model(COM) library • Improved the data visualization performance using multi-threading • Implemented external algorithms to deal with huge data sets • Designed and implemented a plug-in system based on COM so that users can write their own source code to extend our application with any programming languages supporting COM development • Wrote developer guide of the plug-in system • Wrote sample plug-ins with C++, C#, and Visual Basic .NET • Wrote test scripts based on TestComplete to do automated testing • Applied Git to manage the source code • Designed and implemented the web system for distributing the GIS product and the software license with PHP and MySQL

    • Software Engineer
      Jan 2003 - Nov 2006 · 3 yrs 11 mos

      • Responsible for developing a GIS platform running on Windows Operating Systems • Designed and implemented the framework of the system using C++ • Implemented vector and raster data handling and editing modules • Designed and implemented modules related to time series data processing and visualization • Designed and implemented spatial and attribute data queries • Designed the database system to save time series data and the operations applied to the data

  • Software Engineer at Tsinghua Sunway New Technology Development Co.,Ltd
    Jul 2001 - Dec 2002 · 1 yr 6 mos

    • Developed and maintained a real estate management platform • Implemented the module for 3D visualization of buildings • Received "Recommending GIS software" award of Ministry of Science and Technology of People's Republic of China, 2001

  • Research Intern at Beijing GEOWAY Software Co., Ltd.
    Oct 2000 - May 2001 · 8 mos

    • Designed and implemented the topology module with C++