The following projects are what I've worked on in the past few years. For a more complete list please visit my LinkedIn profile.
Developed the backend and REST API of CamPay, a QR code based payment gateway for use with websites, TV and print media. CamPay is PCI compliant and hosted on Amazon Web Services (AWS).
Developed an internal HR management system integrated with RFID card readers for managing employees' personnel and attendance records.
Developed a task scheduler, also known as a cron job replacement service, called Cronless for automating backend scripts of small websites. It also offer server monitoring and email notification capabilities.
Developed the backend for an employees payment system for receiving salaries in cash using ATM-like machines.