# Leo Cheung

> Frontend Engineer with 8+ years building and maintaining SaaS products at startups, based in Toronto, Canada. Focused on data visualization — from chart components to the systems that keep a growing product accessible and maintainable.

## Career

- **ProcedureFlow** — Frontend Engineer (2026 – Present, Saint John, Canada, remote). B2B SaaS platform; builds frontend features in React, integrating with ASP.NET Web APIs for decision-based workflows.
- **ProjectBoard** — Senior Frontend Developer (2021 – 2026, Toronto, Canada, remote). Co-led a team building a Nuxt SSR SaaS platform for STEM/education clients; integrated an AI chatbot using LangChain.js and Gemini AI.
- **CloutDesk** (formerly CloutJam) — Frontend Engineer (2020 – 2021, Toronto, Canada, remote). Rebuilt an influencer marketing platform into an interactive React/Redux web app; interim team lead for 9 months.
- **Cycura Inc.** — Junior Fullstack Developer (2018 – 2019, Toronto, Canada). Built the first MVP of a cybersecurity platform in React, Redux, and Material UI.
- **Sun Life Financial** — Junior Web Developer (2017 – 2018, Toronto, Canada). Web accessibility compliance work (screen readers, tab order) on Adobe AEM corporate websites.
- **Sun Life Financial** — Middleware Analyst (2014 – 2017, North York, Canada). Built and maintained enterprise ESB middleware infrastructure.

## Tech stack

### Frontend
Vue.js, Nuxt.js, React, Next.js, Pinia, Vuex, Backbone.js, JavaScript, TypeScript, HTML5, CSS3, Tailwind CSS, Bulma CSS, Bootstrap, i18n

### Backend
Node.js, Python, Java, Flask, ASP.NET, Go, MySQL, MongoDB, ClickHouse, Firebase, Supabase, Algolia, OpenAI

### Infrastructure
Docker, AWS, Google Cloud, GitHub, Cypress, Puppeteer

### Design & Tools
Figma, Slack, Monday.com

## Featured projects

- [ProcedureFlow](https://procedureflow.com): a decision-based workflow platform helping teams turn complex processes into clear, guided procedures. Built with React.js, Bootstrap, Backbone.js, ASP.NET, ClickHouse, AWS, Docker.
- [International Forum on Research Excellence](https://events.projectboard.world/ifore2025): a virtual event platform hosted by Sigma Xi, featuring presentations from top student researchers, keynote speakers, and panel discussions. Built with Vue.js, Nuxt.js, Pinia, Tailwind CSS, Firebase, Go, MySQL, Docker, Algolia, Cypress, i18n.
- [Regeneron ISEF](https://isef.net/): the world's largest global science competition for high school students, connecting top researchers from 60+ countries. Built with Vue.js, Vuex, Bulma CSS, Firebase, Go, MySQL, Docker, Algolia, Cypress, i18n.

## Links

- [Resume/CV](https://drive.google.com/file/d/1DbHnDJbCJ1rX1i6pK5MZxZwTgRKGIqYA/view)
- [GitHub](https://github.com/lappang-cheung)
- [LinkedIn](https://www.linkedin.com/in/l-cheung)
- [Full site (leocheung.ca)](https://www.leocheung.ca): also served at [cheungleo.com](https://www.cheungleo.com)
- [Human-readable summary](https://www.leocheung.ca/summary): also at [cheungleo.com/summary](https://www.cheungleo.com/summary)

## Contact

- [Email](mailto:lappangcheung@gmail.com): lappangcheung@gmail.com
- [Contact form](https://www.leocheung.ca/contact): also at [cheungleo.com/contact](https://www.cheungleo.com/contact)