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JH

Freelance Frontend Engineer in Munich

From landing pages to internal tools, I build the web your business runs on.

10+years building for the web

About

I’m Johnny, a frontend engineer with more than ten years of turning ideas into websites and web apps that people actually like using.

I started out in Taipei, building software for banks — where a misplaced decimal point is never a fun bug. Since then I’ve shipped portals for an electric-vehicle maker and an education provider, a financial-planning app, and more internal dashboards than I can count: the unglamorous tools that quietly keep a business running.

In 2025 I moved to Munich, where I now work freelance with startups, agencies and local businesses. My German is a solid B1 and improves every time I order at the bakery.

What you get is one person who cares about the details, from the first sketch to the last line of CSS, and who explains things without jargon.

Tools I work with

  • React
  • Next.js
  • Vue
  • Angular
  • React Native
  • TypeScript
  • Tailwind CSS
  • SCSS/Sass
  • CSS-in-JS
  • Redux
  • Zustand
  • React Query
  • REST APIs
  • Framer Motion
  • Web performance optimisation
  • Responsive design
  • Multilingual sites
  • Git
  • CI/CD
  • Figma
  • Storybook

Services

Three ways I can help, whether you need something new or want what you already have to work better.

  1. Websites & landing pages

    Fast, polished sites that explain what you do and turn visitors into enquiries. Built to load quickly on phones and easy for you to update.

    • Company and portfolio sites
    • Campaign landing pages
    • Multilingual sites

  2. Web apps & internal tools

    Dashboards, admin panels and portals that replace spreadsheets and copy-paste. Clear interfaces on top of the systems and APIs you already use.

    • Dashboards and admin panels
    • Customer and member portals
    • Front ends for existing APIs

  3. Website & system maintenance

    Updates, fixes and improvements for the site or app you already have, so it stays fast, secure and working while you focus on your business.

    • Bug fixes and updates
    • Speed and accessibility improvements
    • Framework and dependency upgrades

Experience

Highlights since 2016.

  1. 2022 — Now

    Freelance Frontend Engineer · Quasidea & selected clients

    • Internal dashboards and web apps for international clients, working with Quasidea, a US development agency, and directly with selected clients.
    • React
    • React Native
    • Angular

  2. 2019 — 2022

    Senior Frontend Engineer · TPI Software, Taipei

    • Built a tech-info portal for a US electric-vehicle maker and a student portal for an education provider, both from the first phase to launch.
    • Built a financial-planning app for a Taiwanese bank.
    • Maintained the credit-card and card-services websites of a major Singaporean bank.

  3. 2016 — 2018

    Senior Frontend Engineer · Bank SinoPac IT, Taipei

    • Built the intranet permission-management system and the mobile-app admin system from scratch.
    • Trained the team in Angular.

  4. 2017

    Contract · Taiwanese enterprise

    • Order-management and customer-service systems.

Selected clients

  • Quasidea
  • DBS Bank
  • Fubon
  • Lucid Motors
  • Bank SinoPac

Contact

Let’s work together.

Tell me what you’re planning — a new site, a tool your team needs, or something that just needs fixing. I’ll get back to you with honest thoughts on how to approach it.

Email me

I speak

  • English (fluent)
  • German (B1)
  • Mandarin (native)

Based in Munich, working with clients worldwide.