• Lead the team to develop the payment gateway system which connect to many systems, such as cash, credit card (VISA, Master), debit direct, internet banking, Paypal, Alipay etc.• Analyst and gather the requirement from users in many parties, not only product sales, such as operation, accounting etc.• Develop and resolve the problem about the payment gateway system and the e-wallet system with C#, Node.js

• Engage in the development and validation of credit rating models for Corporate and SME using statistical techniques and calibrate the probability of default for each credit rating with the internal data.

• Design following the requirements and develop the equities’ applications which provide the fundamental data, the financial ratio and the calculations to help the customers’ decision with high quality.• Develop the calculator to find the theoretical price for many types of options with various strategies.• Develop the automation test tools for the financial applications.

• Administer all systems related Internet Service Provider such as DNS server, proxy server, mail system, etc. that were implemented on Linux based.• Implement and maintain infrastructure system with Linux.

• Conduct the security risk assessment and provide security architecture and design consulting solutions for many projects in order to achieve high quality security control.

Service Engineer (January 2008 - June 2008)• Responsible for the IT infrastructure system of the whole organization.• Implement Log Management System in order to enable the system to comply with the computer law from Ministry of ICT.Application Engineer (October 2006 - December 2007)• Develop web-based application and modify programming source codes of various language e.g. ASP.NET with C#, PHP, ASP.• Develop and administer Microsoft SharePoint which is the central portal application for the whole organization.

• As a Penetration Tester to assess vulnerability of the client systems.• Being a consultant for the client regarding the Information Security.

• Implement the network system with CISCO and Packeteer equipment.• Setup and be a consultant the Monitor Application with BMC Software.