- Check and Solve Top-Up Pin Card of VoIP, Easy Phone, Access as there is Complaint from Customers.- Collect VoIP, Easy Phone and Access Card CDR to build report for Top Management.- Fix and Solve VoIP server when there are voice call, destination call, server or destination operator issues.

- Build software to capture CDR(write and live customer call records to text file and then transfer to database server) from MD110 switching (ERICSON) through COM port using C#.NET.- Lead and Manage Billing Team as well as deliver all task to Subordinators to fulfill and then make reports.- Create web application to convert CDR(Call Detailed Records) from Binary file to plain text file and build application for Rating Engine- Analyze CDR and Build reports to prevent fraud… Show more - Build software to capture CDR(write and live customer call records to text file and then transfer to database server) from MD110 switching (ERICSON) through COM port using C#.NET.- Lead and Manage Billing Team as well as deliver all task to Subordinators to fulfill and then make reports.- Create web application to convert CDR(Call Detailed Records) from Binary file to plain text file and build application for Rating Engine- Analyze CDR and Build reports to prevent fraud incoming calls from other operators.- Create script to add and configure flexible discount for Telephone tariff- Analyst database system and develop web applicaton, billing system forms and reports and analyst CDR.- Migrate Foxpro billing system to new billing system using C# and SQL SERVER 2008- Load payment from old billing system to new billing system to make them duplicated to prevent new billing system, down or not running smoothly.- Join BRC Software Company team to build new billing system using C#, PHP, AJAX, JAVASCRIPT, HTML, XML, and SQL SERVER- Maintain and support Billing System for provinces’ all branches.- Solve any issues related to billing system including provinces.- Configure and Maintain Billing server, VPN server, FTP server, Backup Server, and 21 provinces billing server. - Configure & Migrate Area Code, Country Code, International Gateway, Tariff rate for new Billing System. - Repair and Maintain Payphone Management System run with AIX OS and Oracle 8.7I(TELEPHONE BOOTHS along the street)- Build Interconnect Software to convert CDR(CC08 and CC082k) from binary files into text files, rating engine.- Build script to automatically transfer data from 21 provinces to Phnom Penh through VPN connection every night.- Join Korea Programmer Team to modify Group Ware and ERP System to use in Camintel.- Prepare data and check invalid CDR, backup, debt data, customer information for Telephone, Internet, Leased Line. Show less

- Analyze database system and write code with C#.Net 2005 ,SQLSERVER 2005, Crystal Report- Support and solve any complaint for customers- Build softwares such as Inventory system, HR system.- Prepare documentation for software.

- Manage and control Client-Server computer for Rock Entertainment Center, wireless D-link, and antenna.- Analyze database system and write code with VB .Net,SQL SERVER for Rock Entertainment Center to manage all department such as Marketing Dept. , Human Resource Dept., Food & Beverage Service that are proceed by Palm etc.

- Analyze, design, develop Database and code with VB 6.0 ,VB .Net ,Access Programming ,and SQLServer 2000 - Daily check and solve PC problems - Repair computer & install software- Control and monitor Computer Network