• Maintained user management system and created new features (course searching and my favorites) for online learning platform using PHP with FatFree framework, JavaScript, MySQL, Bitbucket and AWS.
• Implemented restful API for mobile APP service and updated API documents.
• Joined the rotation of scrum master, managing all sprint events and holding scrum meetings.
• Integrated third-party APIs like Facebook Auth, Firebase Cloud Messaging and e-invoice in back-end system.