Four years. Android, shipped.

SPE's core QRIS product for merchants, built on Bank Indonesia's national QR code standard for cashless payments. Merchants accept static and dynamic QRIS payments, run a cashier, and track income, disbursements, and refunds in real time. Several banks run it under their own brand, including Bank Kaltimtara, Bank Jateng, and Bank Mandiri Taspen as Movin Merchant, shown here. I build new features and fix bugs.

A point-of-sale app for service businesses such as salons. It brings bookings, customer management, and analytics for sales, customer satisfaction, and staff into one app. The phone and tablet versions have completely different layouts, and I build features and fix bugs on both.

An electronic cash management system for digital payments, built on Virtual Accounts that work as sub-accounts of a current account. Users withdraw cash at ATMs and merchants, transfer to other Virtual Accounts and bank accounts, and attach receipts to transactions. I build new features and fix bugs.

A supply chain app for retail trade and distribution. Distributors, agents, and retail stores use it to create purchase orders and invoices, track deliveries, and pay through BNI Virtual Account across multiple banking channels. I build new features and fix bugs.

A super app for Telkomsel, Indonesia's largest mobile network operator. Lets users check balance, buy data and call packages, top up credit, redeem rewards, and reach exclusive promotions in one app.

A membership and data app for a faith-based mass organization. Handles member registration, internal news, certificates, and day-to-day organizational data entry.

An internal tool for correspondence management. Assigns sequential numbers to outgoing letters, keeps a searchable record, and organizes them into a digital archive.