Needed comprehensive stock valuation and movement tracking across multiple branches.
Manual vendor pricelist data entry led to frequent errors.
Multi-company expansion required strict user access control and data isolation.
Faced advanced validation errors on account moves and negative stock blockages in production.
Built a dynamic Stock Card Report engine from scratch with dual-output (Interactive On-Screen View and advanced Excel Export via xlsxwriter).
Developed an automated Vendor Pricelist module that intelligently applies discount percentages to Purchase Orders.
Architected complex User access logic tightly filtered by Active Company to support Skin3's multi-branch expansion.
Implemented strict Access Control Lists (ACL) to restrict unauthorized access to Inventory Adjustments.
Resolved critical accounting bugs, implementing safeguards against illegal modifications on reconciled invoices to maintain database integrity.
Executed end-to-end deployments to a merged production server and conducted data security audits to protect PII (NIK, medical records, etc.).
