- Established an in-house IT department and led a lean, high-impact team of 2 to 4 members.- Mentored entry-level developers in modern development practices, including effective design patterns, secure coding, GIT version control, and intuitive UI/UX principles, enhancing team efficiency and skill depth.- Replaced external e-commerce provider with a more sophisticated system built completely by our team. It is now generating more revenue than ever with its B2B capability and promotion features.- Integrated payment system with bank (via MPGS) and FPX directly, hence reduced transaction costs by 50% compared to using payment gateway solutions such as iPay88.- With minimum viable product principle in mind, we quickly delivered a mobile-friendly school ordering system within 2 weeks during COVID19, as an emergency solution to sell products to parents in the lockdown period. - Eased the job of our accountant in royalty calculation with a highly customisable system that automatically churns out payable amount for each writer, complete with detailed sales reports, effectively simplified a task that used to take several days (in Excel) to mere minutes.- Developed a very user-friendly consignment inventory system, enabling retail merchandisers to manage off-site stock and assess replenishment needs with ease.- Built a cross-departmental product info repository system that exports to tailored formats, streamlining content preparation for marketing, admin, and bookstore listings.- All internal systems are built on top of our proprietary lightweight PHP framework adhering to OOP (Object-oriented programming) and MVC (Model-View-Controller) separation principles.