Qualiva Space

Dormitory management platform built with a small startup team. I work on billing and invoicing: PDF invoices with PromptPay QR, Stripe subscriptions, invoice delivery over LINE and email, and automated payment-slip verification.

GoFiberPostgreSQLNext.jsKafkagRPCStripe

EN Workshop

Equipment borrowing and reservation system built for a university lecturer. I led a team of 5 and wrote most of the backend, tested with Jest and deployed to Kubernetes with GitHub Actions.

Next.jsExpressDrizzle ORMPostgreSQLCloudNativePGk3s

Self-hosted Infrastructure

Two self-managed Kubernetes clusters, a Hetzner VPS and a home server, connected over Tailscale. GitOps deployment with Argo CD, monitoring with Prometheus and Grafana.

KubernetesArgo CDTailscalePrometheusGrafana

Java Beginner Guide

A Java guide written for fellow Computer Engineering students, authored in Org-mode and exported to static HTML with Emacs.

EmacsOrg-modeHTML

Tic-Tac-Toe on FPGA

A playable tic-tac-toe game implemented in hardware on an FPGA board, built in a team of 2.

FPGA