— Selected Work
Portfolio
Products I’ve built, from personal projects to client work, focused on scalable systems, real-world business logic, and clean UI architecture.
Simulated digital bank, end to end
Duit
Solo · System design, backend, web, mobile, deploy
A digital-banking ecosystem I designed and built solo: a Go core-banking API with a double-entry ledger, retail and TOTP token mobile apps, corporate internet banking, a 7-role back office, a QRIS & Virtual Account payment gateway, and a mock government registry for KYC/KYB.
Multi-property hotel booking & management
Hospitality Booking Platform
Full Stack Developer
An end-to-end multi-property hotel platform: a guest booking site, an operations dashboard for staff, a mobile reporting app for owners, and an AI chatbot, with dynamic pricing, multi-gateway payments, and policy-based refunds.
Electric Submersible Pump design for oil & gas
ESP Design Platform
Frontend Engineer · Freelance
A web platform for designing Electric Submersible Pump (ESP) installations in oil wells: from a 3D wellbore trajectory to pump, motor, and cable selection, in one seven-step engineering workflow with layered validation and print-ready reports.
Fixed-asset lifecycle for multi-branch enterprises
Asset Management System
Software Engineer · Backend, Web & Mobile
An enterprise platform that manages the full lifecycle of fixed assets across branches: procurement, inter-branch mutation, employee handover, physical stock opname, monthly depreciation, and disposal or sale, with a configurable approval engine, data-driven RBAC, and a mobile app for field staff.
Landing page for a 3D artist
DirtyRat Studio
Frontend Developer
A modern, interactive landing page built to showcase a 3D artist's creative work in a visually engaging and professional way.
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