I have developed a range of systems for land and river route vehicle monitoring as well as visitor management within port environments, with PT Sarana Abadi Lestari. These solutions span across desktop, web, and mobile applications, supporting real-time monitoring, QR code-based access, WhatsApp API integration, and AES-256-CBC data encryption for security. The systems are also integrated with Firebase, webhooks, and physical relay modules (for sound/light indicators) to enable automated notifications without manual supervision...

(Performance & Seo 100%) test with pagespeed google (single page show all content gallery , etc ssg strategy) .I initially utilized pre-designed ThemeForest WordPress templates in October 2023 to accelerate development. By December 31st, 2024, I significantly improved the site’s performance by migrating it to Next.js (with SSR and SSG) and GraphQL, achieving a green PageSpeed score—all completed within just two days. This project showcased my ability to transition from rapid prototyping to a high-performance, modern web stack.

For a 🇯🇵 Japanese company ( secret-project ), I developed a dynamic website with multiple database (3 Connection) integrations using MySQL and Oracle 12c, successfully optimizing query response times from 15 minutes down to just seconds.

From May to October 2022, I worked as a freelance Flutter developer for clients in 🇯🇵 Japan and 🇲🇨 Indonesia, focusing on mobile app development using Flutter with Riverpod (bloc, providers) and applying Domain-Driven Design (DDD) principles. I contributed to a mobile attendance system with localization support (Japanese, English, Indonesian), geolocation features, and cross-platform deployment for iOS and Android. I also collaborated with backend teams while awaiting server fixes and used tools like Firebase and Figma for development and design integration.