Gemintang

Building Interface

HomeServicesProjectsAbout MeFAQsContact Me
My Portfolio

Featured Projects

A collection of my work in software engineering. Many of these are enterprise-grade solutions solving real-world business problems.

View Case Study
Private
Mobile Application

PHC (Periplus Human Capital) Mobile App

Developed an internal Human Capital mobile application with a primary focus on attendance management enhanced by face recognition. The system validates employee check-ins by matching live attendance photos against existing profile images, alongside standard HR features such as leave management and employee data tracking. Built with an emphasis on performance, clean architecture, and reliability in real-world usage.

FlutterOpenCartMySQL+2
View Case Study
Private
Retail System

Mobile POS (Point of Sale) Application

Developed a mobile-first POS application optimized for live cashier operations, where transaction speed and responsiveness are critical. The system handles product management, transaction processing, and receipt generation with a strong emphasis on performance, lightweight architecture, and operational efficiency across multiple retail stores.

FlutterPOS WorkflowREST API+1
View Case Study
Private
AI & Search System

AI Book Search & Recommendation Pipeline

Designed and implemented a scalable AI-driven book search and recommendation pipeline for a catalog exceeding 30 million products. The system combines Generative AI tagging using LLaMA (Ollama) with KeyBERT relevance scoring and OpenSearch to deliver fast, accurate search results, autocomplete, typo tolerance, and personalized recommendations. Built with a strong focus on query performance, indexing optimization, and real-time ranking signals.

PythonOllama (LLaMA)KeyBERT+4
View Case Study
Private
Enterprise Application

NADIA – Network Terminal Equipment Management

An internal enterprise system used by Telkom Indonesia to manage Network Terminal Equipment (NTE) assets, such as customer routers that must be retrieved after service termination. Took full ownership to clarify unclear business workflows, stabilize legacy features, and transform the application into a structured, reliable, and maintainable system.

Microservices ArchitectureNest JSNext JS+5
View Case Study
Private
Enterprise Application

PEFITA – Package Management System

Contributed to an enterprise-level package management system used as a core service for calculating and formulating product packages consumed by other applications. Involved in enhancing the map visualization feature to improve package location context and operational clarity.

React (Vite)NestJSPostgreSQL+1
View Case Study
Private
Enterprise Application

SCONE – Order Management System

Contributed to SCONE, a core enterprise order management system used by Telkom Indonesia for primary business operations. Responsible for migrating the legacy UI from Zend Framework to a modern Next.js-based frontend, while also handling critical order integration flows between SCONE and NADIA to ensure seamless end-to-end business processes.

Next.jsMicroservicesSystem Integration+3
Side Projects & Experiments
Others

JTK Berbagi – Donation Management Platform

Developed a donation management platform similar to Kitabisa.com, specifically designed for the academic community of the Computer Engineering Department at POLBAN. The system was created to improve the efficiency and transparency of JTK Berbagi activities by centralizing donation collection, distribution, and reporting into a more structured and systematic digital platform.

Others

Sinbada

Built a web-based inventory system during university as part of a team project, focusing on managing asset and inventory data. The project provided hands-on experience in collaborating within a development team and working with a more diverse technology stack.

Others

Siinvent

Developed a web-based inventory management system as part of an early collaborative project during university. The system was designed to manage inventory data efficiently while introducing real-world development workflows such as team collaboration, task distribution, and version control.