Software Engineer

Bono
Ku

Aerial portrait of Ku Bon Kwan

Hi, I'm a Physics graduate turned Software Engineer — I build reliable and scalable web systems with a focus on performance, and the kind of UI details most people don't notice until they're missing.

Experiences

Booking and loyalty, for location-based virtual reality.

  • Architected a unified payment platform supporting 4 providers (Square, Stripe, Adyen, Checkout.com) across 99 global Sandbox VR locations, enabling per-location provider selection, transaction fee optimisation, and future payment integrations with minimal engineering effort
  • Led migration from CSR → SSR using TanStack Start and Cloudflare Workers, improving Core Web Vitals (LCP/TTFB), SEO, and search discoverability, resulting in ~10% growth in organic traffic and new user acquisition
  • Founded Sandbox VR's design system, creating a shared React component library with 30+ accessible components, documentation, design tokens, Storybook, and an automated private npm publishing pipeline, adopted across 90% of company web applications
  • Launched a mobile-first check-in experience replacing dedicated kiosk hardware - eliminating hardware setup costs, reducing peak-hour queue congestion, and enabling guests to complete pre-arrival onboarding.
  • Expanded a Contentful-based web content platform with reusable page sections, layouts, and configuration controls, enabling Marketing to independently launch and manage website experiences without engineering involvement.
Visit site Sandbox VR (opens in a new tab)

Projects

  • React Slides EditorPersonal :: Oct 2023
  • Virtual Job Case SimulationProject Lead Frontend Developer :: Jun 2023 - Jan 2024
  • NFC Business Card WebsiteCompany :: Mar 2023 - May 2023
  • Talent Quest 2K23Company :: Jan 2023 - Feb 2023
  • Riot Games Client Login Screen ClonePersonal :: Aug 2022 - Sep 2022

Extra-curricular

  1. 001

    Cathay Hackathon 2022

    Frontend Developer & Designer

    • Designed and developed an AI integrated inflight service solution app using Figma, Flutter and Firebase for prototype showcasing
    • Qualified for the final rounds as top 20 teams amongst 100+ participating teams with a pitching video of our solution
    Cathay Hackathon 2022 artwork
  2. 002

    PLANCKS 2022 Hong Kong Round

    Participant

    • Solved 5/6 masters-level challenging physics questions in the Hong Kong preliminary rounds – in collaboration with 2 members from Hong Kong University of Science and Technology (HKUST)
    • Acquired critical thinking power beyond textbooks by enforcing research paper comprehension, and experienced professional discussions with academically excellent peers
    PLANCKS 2022 Hong Kong Round artwork

Skills

  • Languages

    • TypeScript
    • JavaScript
    • Python
  • Frontend

    • React
    • Next.js
    • TanStack Start
    • TanStack Query
    • Zustand
  • Backend

    • Node.js
    • Cloudflare Workers
  • Infrastructure

    • AWS
    • GCP
    • GitHub Actions
  • Architecture

    • SSR
    • Design Systems
  • Databases

    • PostgreSQL
    • MySQL
    • MongoDB
  • Payments

    • Stripe
    • Adyen
    • Square
    • Checkout.com
  • Design & Tooling

    • Figma
    • Storybook
    • Accessibility (WCAG)