Projects

Three products, all three running today — two inside a company, one built for myself.

Self Checkout

Zero-hardware QR checkout · KIRAPAY · 2026.04 — in daily use

A customer's phone: HKD $128.50 to KIRAPAY, pick a wallet

The call I made
Refused a hardware terminal. A static QR sticker is worse on paper — no screen, no card reader — but it turns deployment from an install visit into one sticker, and staff training into one sentence.

My part: Solo: flow design, build, and in-person merchant onboarding
Scale: Physical Hong Kong shops, daily, since 2026.04
What came of it: Still in daily use 4 months after launch, with no redeployment and no retraining.

Idle: the shop screen waits
Staff key in the amount
Customer pays from their own phone

Sippa

Creator tipping, 0→1 · KIRAPAY · Launched 2026.08

Visit ↗

Sending a creator a $10 matcha, with a note attached

The call I made
Cut the MVP down to the money path — email notification, a mobile step-flow, and the UX fixes that were blocking payment. Everything else went to v1, which proved out the payment integration weeks before the product was pretty.

My part: Built it alone, then led the team of three that took it on
Scale: Zero to launch; crypto rails wrapped for creators who have never held a wallet
What came of it: Launched 2026.08. The cross-team payment integration landed without me having any authority over that team.

The pitch, in one screen
A creator's page
Tipping, step one
Ready to send

Personal multi-agent system

Self-built · plans, reviews and executes projects autonomously · 2026 — present

The agent stops: one decision needed, three options, each with its downside spelt out — My own tool, so the interface is in Chinese — and the project names in these shots are stand-ins, swapped in before the screenshots and swapped back after.

The call I made
Chose guardrails over reach. Every irreversible action stops for a human and every repository takes one writer at a time, which makes it slower than it could be — and is exactly why it can be left running overnight.

My part: Built it myself, for myself — then put it to work on a production product
Scale: Runs round the clock on my own projects and on Sippa in production
What came of it: 86 bugs closed overnight, five review-ready posts a day, partner outreach drafted on schedule — work that would otherwise need a QA engineer, a content assistant and a BD researcher.

Every project, this morning's brief
What ran overnight
A plan, before it is allowed to run

Skills

Product: End-to-end lifecycle (0→1 to launch)
roadmapping
PRD & requirements
success metrics & data-driven decisions
MVP scoping
cross-functional leadership
go-to-market
Build: TypeScript
React / Next.js
Supabase
Vercel
REST API integration
Git & CI
Python
SQL
AI & Automation: Agent orchestration & guardrail design
LLM-assisted development (Claude)
workflow automation (n8n)
AI batch pipelines
prompt engineering
Design: UX/UI & interaction design (Figma)
design systems
brand identity & visual design
UI copywriting
data visualisation
Domain: Web3 payments
crypto checkout & QR payment flows
fiat on/off-ramp partnerships
creator economy
Languages: Mandarin (native)
English (working proficiency)
Cantonese (basic)