- Responsible for managing an international development team of 10 members. - Applied Scrum methodology to manage several projects. - Organized and prioritized numerous development tasks to form several concrete projects. - Assigned developers to projects depending on their skills, experience and talent. - Worked on the performance improvements of the OpenSim platform.

- Responsible for managing 20 engineers and 5 to 10 projects simultaneously. - Built company's own development methodology by combining the company's development conventions and the real world agile development practices. - Incorporated continuous integration into company's software development processes. - Designed and implemented an internship programme for 4 Vietnamese students.

- Developed web applications as a technical lead using various J2EE frameworks. - Replaced company's proprietary web application framework with OSS alternatives. - Localized an international web application by collaborating with an international engineering team. - Managed development teams of 2 to 8 members.

- Responsible for delivering enterprise intranet blog application package to resellers. - Designed the architecture of the intranet blog application. - Led the intranet blog application development using various OSS technologies. - Designed and implemented application's own API by extending AtomPP specifications to suit customers' needs. - Managed a development team of 5 members.

- Developed Japan's first online mileage service both on PC and mobile platforms. - Developed fully automated mobile advertisement distribution service. - Led the development of additional features on the mobile advertisement distribution service. - Identified and eliminated performance bottlenecks in high traffic internet services.