Calibration Management System
PT Surya Toto Indonesia
Intern Full Stack Developer
Overview
Developed a web-based calibration management system for production equipment, working directly with QA and Maintenance teams throughout the full development lifecycle.
The existing process was entirely manual — technicians tracked calibration schedules on spreadsheets with no automated reminders, no audit trail, and no centralized visibility across the facility.
Built a responsive full-stack application using Rust on the backend and vanilla JavaScript on the frontend, with MongoDB as the data store for flexible equipment and calibration record schemas.
Implemented role-based access control (RBAC) so only authorized personnel could create or update calibration records, with an immutable audit log capturing every state change — a critical requirement for ISO compliance audits.
What Was Built
- Built full-stack calibration tracking system using Rust (backend) and JavaScript (frontend)
- Implemented RBAC with role-separated access for QA, Maintenance, and Admin roles
- Developed automated email reminders triggered before calibration due dates
- Created immutable audit logging capturing every record state transition
- Built responsive real-time dashboard for calibration status monitoring across the facility
- Collaborated directly with QA and Maintenance stakeholders throughout the project