Jastin Gabriel Ongko

A QR ticketing system designed to help event managers handle ticket distribution and automatic attendee check-ins efficiently, featuring reliable offline-first validation and real-time syncing.

Event QR and ticketing system for Kahf x NewCentralPalu Fun Run. Features QR BIB for attendance tracking, merchandise exchange, and medal distribution with high-speed scan-to-process latency for fast-paced events.

A full-featured Point of Sale system built for F&B businesses, featuring real-time inventory tracking, warehouse management, and multi-branch operations with hub-to-branch supply chain workflow.

Build an automated web-based scheduling and attendance platform for Sekolah Rajawali Makassar built with React, Laravel, and Supabase. It digitized manual spreadsheet processes to eliminate 100% of scheduling conflicts across teachers and classrooms

A web app built with Next.js frontend and n8n backend to schedule and publish LinkedIn posts weekly, streamlining content management and social media automation.

An AI-powered dental scheduler assistant that helps clinics and patients manage appointments automatically.

How can developing Central Asian economies transition toward a green and digital future while ensuring social equity and worker protection? To answer this for ADB, I synthesized socio-economic, energy, and labor indicators from the World Bank, ILO, and WID. Using cross-country time-series models, I delivered actionable investment roadmaps focusing on internet access, youth upskilling, informal worker safety, and renewable energy transitions.

Unifying scattered data across 4 core Samsung apps (Salaam, Samsung Gift, S-Lime, and SPay) into a single React dashboard. By processing raw logs in AWS Athena and validating APIs via Postman, I built a real-time platform to help teams track daily/monthly active users, user retention, and A/B testing outcomes.

Analyzed delivery operation datasets to uncover the primary factors contributing to delivery latency. Identified Weather Conditions, Traffic Jam severity, and Peak Hours as key drivers affecting delivery times, and formulated strategic recommendations to optimize efficiency.

Cleaned and analyzed a dirty dataset of cafe sales to extract actionable insights. Created an interactive Power BI dashboard to visualize key metrics like total sales, item popularity, and payment methods.

Specialized analysis of economic indicators including CPI Inflation, GDP, Interest Rates, GDP per Capita, and Unemployment Rates for individual countries and trading blocs.

Monitored and visualized performance data for the Better Australia political advocacy campaign, analyzing key engagement metrics and electorate data.