Founder of BTF Culture & Creative (傲嬌文創) and Alljoint (傲嬌軟體), Taipei.
Founded Alljoint in 2016 and grew it to a team of 15 engineers at its peak, building software for clients and our own products. Today I run it lean: over the past year I built an AI-agent development workflow (Claude Code + Codex, with Claude planning/reviewing and Codex implementing) and use it to ship and operate several production SaaS products for Taiwanese SMBs, plus dozens of internal tools that automate most of the company's day-to-day operations.
Most of my product code lives in private repos because it runs real businesses with real customer data. This page is the public index.
| Product | What it is | Stack |
|---|---|---|
| work.btf.tw | Shift scheduling + HR/payroll SaaS for retail and restaurant stores. Multi-store, 4 roles, claim-a-shift scheduling, clock-in, payroll with Taiwan labor/health insurance deductions, leave, expense claims, bonuses, daily revenue analytics, LINE push notifications. Used by real stores daily. | Next.js 15, TypeScript, Supabase (Postgres + RLS), Vercel |
| quotation.alljoint.tw | Quotation system with shareable per-quote links, PDF export and email delivery. | Vanilla JS, Supabase, Vercel |
| ins.alljoint.tw | Mobile quiz app for Taiwan insurance-agent certification exams. | Single static HTML, Supabase (Google login + RLS) |
| alljoint.tw | Company site. | Next.js |
Screenshots from the demo tenant (test data). The product is a multi-tenant SaaS: each store brand gets its own tenant, and can bring its own LINE official account, email sender and custom domain.
Owner dashboard: onboarding checklist, revenue today/week/month, open shifts, headcount.
Operations report: revenue vs. payroll cost, labor-cost ratio, hours, attendance rate, staffing gaps, CSV export.
Payroll: monthly payroll computed from clock-in hours and per-shift sales bonuses, Taiwan overtime multipliers, payslip generation and sign-off, bonus tiers per store.
Employee shift claiming: staff claim weekday shifts instantly; weekend and holiday shifts go through manager approval with a monthly quota.
Integration center (white-label): per-tenant LINE Messaging API credentials and webhook, web push, custom email sender via Resend, custom domain with automatic SSL.
Several more vertical SaaS products for SMBs are in development (logistics and compliance, membership and event management, hospitality, and an AI-assisted financial research tool). Details on request.
- Claude plans, Codex implements, both review each other's output. I read every diff.
- Security first: RLS with
WITH CHECKon every update policy,SECURITY DEFINERRPCs for anonymous access, rate limits keyed by IP, no secrets in code. I keep a reusable RLS audit probe that runs as a PR gate. - Every change is verified on a real environment (DB sandbox transactions, API smoke tests, Playwright screenshots), not just unit tests.
- Lost & Found Lady (失物小姐), 2015–2016: LoRa/Sigfox tracker tags for everyday items. Shut down after Apple AirTag launched.
- Early founding member of Hackathon Taiwan; mentored open-source and incubator teams.
- First business, in high school: automation bots for an online game, sold through forum word of mouth with a built-in referral feature (friend shares it, first month free).