A node-based visual editor desktop application designed to build game story flows, dialogue, and events for the "Payung" visual novel/RPG engine. Features a fully custom pannable and zoomable node canvas, real-time scene previews, conditional story branching logic, and multimedia asset management. All event data is structurally mapped and saved into an integrated SQLite database.

Maintained and heavily optimized a nationwide electronic auction platform. Developed a RESTful API bridging the auction system with BNI and Mandiri banking services to handle high-stakes transactions (UJL) via virtual accounts. Overhauled the verification logic with a single optimized query, increasing system throughput by 45% and implementing automated fallback systems to prevent critical financial errors.

Built an experimental, context-aware manga translation tool that achieves output quality rivaling human translators. Integrated a custom typesetting feature with a rich text editor, allowing translators to directly edit and format manga texts seamlessly on the page.

Developed full-stack loan scoring and crediting management systems. Designed the application flow to determine customer credit eligibility automatically, significantly reducing the bad-loan acceptance rate while expediting the legitimate crediting process by 40%.

Built, configured, and currently maintain a custom bare-metal server acting as a homelab. The environment is actively used to self-host personal projects, databases, and testing environments with fully customized routing and deployment pipelines.