Thoughtful engineering.
Unexpected experiences.
I turn complex problems into
digital experiences that feel simple.
I’m Yosua, a full-stack software engineer based in Indonesia. I connect the thinking behind a system with the experience in front of it.
From Laravel APIs and financial workflows to Flutter apps and considered interfaces, I care about how things work—and how they feel to use.
Tidak ada lompatan instan.
Hanya rasa ingin tahu, latihan, dan usaha yang diulang.
Terlalu banyak hal yang ingin dipelajari sekaligus, sementara arah belum selalu jelas.
Mulai dari hal kecil: membaca, meniru, merusak, memperbaiki, dan mengulanginya sampai logikanya terasa masuk akal.
Kemajuan pertama bukan tentang menulis kode yang sempurna, tetapi berani menyelesaikan satu masalah kecil.
Web, mobile, and the
systems in between.
A member and merchant loyalty platform that brings points, vouchers, promotions, merchant discovery, QR-based earning, notifications, and transaction history into one connected experience.
Member accounts, profiles, tiers, and authentication
Global and merchant-specific point balances with ledger-based history
Merchant discovery, reviews, nearest merchants, and QR point scans
Voucher catalog, owned vouchers, QR redemption, stock, and idempotency
Promotions, notifications, profile, history, user management, and audit logs
A multi-platform Flutter application that helps children and families manage savings, expenses, school activities, reminders, vehicles, documents, health records, and social connection in one focused experience.
Local-first personal finance and savings workflows
School, vehicle, document, health, and reminder modules
Laravel REST API, authentication, sync, and scheduled jobs
Firebase messaging, Firestore chat, AI assistance, and OCR
Android widgets and multi-platform device integrations
A web-based digital heritage platform that connects physical places with QR-powered stories, history, galleries, events, blogs, and digital books. Visitors can scan a code from their phone without installing an app, while organizations manage their public content through an administration dashboard.
QR-based digital heritage and place discovery
Public place pages with history, location, media, events, and reviews
Admin dashboard for content, users, permissions, quotas, and approvals
Scan checkpoint analytics with device, platform, and visitor activity data
Digital library with QR-linked ebook locations, reader access, reviews, and exports
A back-office ERP platform for managing products, categories, brands, warehouses, suppliers, stock movements, customers, orders, payments, shipping, reports, users, roles, CMS content, and audit trails from one operational workspace.
Product catalog, categories, brands, suppliers, and warehouses
Stock intake, stock movements, inventory visibility, and reporting
Orders, payments, shipping status, tracking, and customer records
Users, roles, permissions, settings, and audit trails
Admin CMS for banners, pages, FAQs, and promotional content
A React and TypeScript portfolio combined with Project Archipelago, a browser-based 3D world where visitors can explore project studios, read case studies, discover a directory, and play an optional fishing activity.
JSON-driven portfolio case studies shared with the game world
Interactive 3D map with project studios, character selection, Directory, and lookout ending
Solo fishing with equipment, casting, catches, Bag, selling, and showcase flows
Optional Firebase multiplayer with rooms, presence, chat, shared fishing stock, and player showcases
Static-first delivery, lazy-loaded WebGL, reduced-motion support, touch controls, and fallbacks
A Laravel-based POS management application for handling sales, products, categories, subcategories, stock intake, members, points, payment types, settings, and operational dashboards in one focused workspace.
Sales and POS dashboard workflows
Product, category, and subcategory management
Stock intake and product availability
Member profiles, point activity, and payment types
Operational settings and responsive admin screens
A location-aware online travel experience for discovering destinations, organizing travel information, and turning place searches into a more useful map-based journey with geocoding and structured location data.
Destination and place discovery
Nominatim/OpenStreetMap geocoding integration
PostgreSQL-backed location and travel data
Map-aware search and location presentation
Clear travel information architecture for web users
APIs, data modeling, authentication, and the quiet work of making an application reliable.
Clear interactions and reusable components, with care for the details people feel every day.
Connected mobile experiences, from state management and native integrations to the final release.
A considered process.
Room for the unexpected.
Start with the people using the product. Understand their context, question assumptions, and define what a useful outcome looks like.
Have an idea, a challenge,
or a good conversation in mind?
