Backend Engineer
Erwin Wahyura
I build backend services in Go — high-traffic systems, distributed caches, REST APIs. Currently learning Japanese (N3 level) and building Kotoba, a vocabulary learning app. On the side I tinker with hardware, pixel art, and interactive maps. Based in Indonesia.
Japanese vocabulary learning app with JLPT progression, home screen widgets, and deep pedagogical content. Go backend, Swift iOS.
Custom virtual pet device on an ESP32-S3 with pixel art sprites, game mechanics, and a 1.9" display. First step into hardware.
Full-stack weather platform with D3.js interactive maps, Three.js 3D globe, and a Go backend collecting data via cron.
AI-powered financial intelligence system. Auto-scrapes Indonesian stock news hourly, filters by portfolio relevance, delivers summarized insights.