My name is Sung Hyun. I’m a Full‑Stack and Android Software Engineer from South Korea, now based in Canada. I specialize in building scalable, user‑centric applications across mobile, web, and back‑end systems.
Highlights:
- Toptal‑Verified Top 3% Engineering Expert
- Certified Associate Android Developer by Google Developers
- Certified Google Play Store Listing by Google Play
Whether you have a new project idea, a collaboration in mind, or a freelance opportunity, I’m always open to connecting!
- Dining-QR Ordering App (frontend): A simplified MVP version of my dining QR ordering system, showcasing core menu browsing and ordering flows. This version excludes QR scanning and the full production feature set.
- Dining-QR Ordering Service (backend): An MVP backend service for my dining QR ordering system, built with Spring Boot and focused on essential ordering APIs. It omits the full production‑level features for clarity and simplicity.
- Android Tableau SDK: An Android SDK that provides a variety of analytic chart components, allowing developers to easily integrate interactive graphs into their Android applications.
- Android Slider Views SDK: An Android SDK offering vertical and horizontal carousel and slideshow views, designed for simple integration into Android projects.
- Android Bluetooth Chat SDK: An Android library that enables Bluetooth‑based communication between server and client devices, providing essential tools for building chat or data‑exchange features.
Frontend
Android
Backend
Cloud & DevOps
