~/yin
experience

<work>

Roles I've held, problems I've shipped, and the teams I've built with.

  1. JobTo.aiJul 2025 – Present · 10 monthslatest

    Jobto.ai provides AI-powered tools and services for e-commerce — product support and customer service automation that lets humans focus on complex interactions.

    Programmer

    • Built and shipped full-stack Shopify app 'Jobto AI Product Description' — Next.js admin, NestJS backend with OpenAI integration, chatbot frontend embedded in Shopify storefronts, and complete subscription billing via the Shopify Billing API.
    • Built a production WhatsApp Order Bot using Gemini API for both message classification (orders / questions / unrelated) and product image recognition (Gemini Vision). Confirmed orders auto-create Purchase Orders; ambiguous messages route to a human-review queue. Multi-tenancy at the WhatsApp group level so new customer segments onboard without code changes.
    • Developed Node.js middleware against the Shopify Admin API for dynamic product filtering and intelligent recommendations.
    • Implemented OpenAI-powered shipping workflow middleware with database persistence — eliminated manual data entry for staff.
    • Deployed microservices on GCP Cloud Run for scalable container orchestration.
  2. Lan Kwai Fong Group

    Property development, hospitality, and lifestyle brands across Asia — going beyond bricks and mortar to shape spaces and bring people together.

    1. Senior Software Engineer

      promotedJan 2024 – Jul 2024 · 6 months
      • Developed a blockchain-enabled POS for tamper-proof recording of customer point transactions.
      • Led RPA initiatives — automated manual workflows, cut processing time by 60% and eliminated human errors.
      • Deployed and managed production on GCP using Cloud Run and Cloud SQL.

    2. Software Engineer

      Aug 2022 – Jan 2024 · 1 year 5 months
      • Redesigned and implemented database architecture for an enterprise customer loyalty system — improved query performance by 40%.
      • Integrated Shopify and Strapi to create a unified loyalty platform consolidating multiple retail touchpoints across F&B, bars, and retail outlets.
      • Designed and launched a campaign website for user registration — 1,500+ registered users in the first quarter.
  3. INDZZ GroupMar 2020 – May 2022 · 2 years 2 months

    Hong Kong-based tech and interactive solutions company specialising in UI/UX, web programming, and app development.

    Web Developer

    • Collaborated with HKSAR Water Supplies Department on an environmental engineering web platform — coordinated a team of 5 engineers.
    • Led development of LOHAS Rink's booking platform with MTR and PCCW — 1,000+ MAU and 500+ monthly bookings.
    • Built custom CRM and CMS for enterprise clients on Laravel — streamlined content workflows and improved engagement.
    • Developed an e-commerce platform with Stripe integration — handled secure transactions and PCI compliance requirements.
  4. Brighten Management LtdJun 2018 – Dec 2019 · 1 year 6 months

    Boutique investment firm specialising in securitisation, M&A, and direct investments into sharing economy, O2O, and Fintech companies.

    Software Engineer

    • Maintained and enhanced a legacy accounting system on Yii2 (PHP) — new features and codebase optimisation under production load.
    • Developed online payment gateway integration with WeChat Pay for Chinese mobile customers.
  5. Smart Object Network LimitedMar 2017 – Aug 2017 · 5 months

    IoT and ubiquitous computing — smart objects and devices for physical computing.

    Teaching Assistant (Intern)

    • Taught students Scratch programming to control mBot.
    • Created STEM teaching materials.