Selected repositories and work samples—backend, APIs, and integrations.

High-performance geospatial visualization platform built on Mapbox, PostgreSQL Vector Tiles (MVT), and Golang — designed to explore and analyze large-scale infrastructure data through an interactive map interface across multiple domains including telecommunications, energy, transportation, and public facilities.

GoGinPostgreSQLPostGISMapbox GL JS

• Go
• Gin
• PostgreSQL
• PostGIS
• Mapbox GL JS

Enterprise-grade social network analysis platform for monitoring individuals and organizations across social media. Collects public conversations, performs sentiment analysis, identifies entity relationships, and visualizes complex interaction networks through an interactive real-time graph interface.

GoGinElasticsearchMongoDBWebSocketGephi

• Go
• Gin
• Elasticsearch
• MongoDB
• WebSocket
• Gephi

Full-featured employee attendance management system built as part of a multi-tenant property management backend. Handles the complete attendance lifecycle — check-in/out, late detection, GPS validation, shift configuration, and multi-day leave approval workflows — with timezone-aware business logic.

GoGinMongoDBJWT

• Go
• Gin
• MongoDB
• JWT

QRIS payment microservice bridging a POS system with external payment providers (Midtrans and Xendit). Handles QR code generation, real-time webhook processing, automatic provider failover, and multi-schema database support for both POS and ERP systems.

PythonFastAPIPostgreSQLRedisDocker

• Python
• FastAPI
• PostgreSQL
• Redis
• Docker