Developing and modernizing enterprise web, mobile, backend, and reporting systems for tire retreading operations.

• Rebuilt and modernized legacy ITMS server into the IRTS ONE platform.
• Developed IRTS ONE mobile application, web application, and web admin monitoring system.
• Built backend services using Go, Node.js, PostgreSQL, Redis, and production deployment infrastructure.
• Created operational reporting, SQL analytics, and workflow tools for retreading, curing, warehouse, and field inspection processes.
• Handled debugging, performance improvement, application maintenance, and production issue resolution.

Building and maintaining web applications for document management, quality management, and digital signature workflows.

• Built SISKERMA, a document management system for MoU and MoA collaboration workflows.
• Built ESPMI, an internal quality management platform.
• Built and maintained a digital signature platform for university document workflows.
• Maintained Linux/Nginx-based application servers and production deployments.

Contributed to mobile and backend development for enterprise property and city application systems.

• Contributed to Sedayu One City Android application development.
• Developed application features integrated with Google Maps.
• Fixed bugs and improved mobile application quality.
• Collaborated with UI/UX team to implement application interfaces.

Worked in pharmacy, quality control, quality assurance, validation, deviation handling, and computer system validation before transitioning fully into software engineering.

• Built practical domain understanding in healthcare, pharmacy, manufacturing, quality systems, validation, and compliance workflows.
• This background supports software development work for healthcare, pharmacy, quality management, and regulated operational systems.