• Designed and developed real-time monitoring system in C++, PHP using NoSQL solution and multi-threaded programming to analyze big data collected from log files written by customized ZABBIX. • Built master configuration management database with high availability by using MongoDB with Replica Set, researched and implemented search algorithm using inverted index in C++, integrated with other systems via SOAP API.• Created traffic load measurement system, built web-based application using PHP on server-side and Javascript Library (JQuery, Highcharts, Amcharts) on client-side to display big historical traffic data via graphs and charts.• Designed and implemented an IT service management system using Python (back-end), PHP (front-end) and MySQL database, data integration via SOAP and REST API.• Collaborated with other team members to research and apply MVC frameworks of PHP (CodeIgniter, Smarty) into front-end development, design and build 3-tiers model frameworks used for all back-end components written in C++ and Python.