IaaS team

• Architected a pay-as-you-go financial system for IaaS cloud computing infrastructures which is modular and easily maintainable.• Enhanced finance calculation program by redesigning it into multiple processes to reduce elapsed time for task execution from almost 1 hour to an average of 5 minutes.• Assembled an online-payment-gateway mini-library to ease up adding or removing banks and increase development speed by 2x in payment service. • Decreased response time from average of 10 seconds to average of 80 milliseconds by refactoring old database queries and adding Redis caching.• Established an automated CI/CD deployment pipeline using GitLab in collaboration with the DevOps team, and maintained a nearly 99.9% up-time by testing and running the applications.• Created a customizable pricing system by extending the user management and finance system, resulting in a 20% increase in company income and a 30% increase in active users per month.

• Developed CheeBaChee web application using .NET CORE MVC to deliver a high-quality and user-friendly solution.• Implemented soft real-time chat service with the possibility of sending and receiving media in chat using SignalR.• Optimized the listing advertisements process by 40%, through the development of an efficient SQL stored procedure.• Built an automatic tag (keyword) generation system to improve indexing advertisements in search engines, resulting in enhanced search visibility and user experience.