Android Software Engineer | Since 2018
https://linktr.ee/hevinxx
https://hevinxx.github.io
[email protected]

I studied Korean Language & Literature and Mathematics and dreamed of becoming a musician before becoming a developer. Although these are different fields, they all share a common characteristic - they are all languages of sorts. I believe code is not written for computers to read, but for humans to read. I also think that an engineer's job is not to create programs, but to create code. That's why I work with 'readability' as a priority. Through readable code, I have been recognized at the companies I've worked for not only as someone who communicates well with developers, but also as someone who communicates most clearly with non-developers.

• Android
• Kotlin
• Jetpack Compose, RX, Coroutine, Hilt, Retrofit2, Glide
• MVVM
• Github, Bitbucket, Jira, Zeplin, Figma, Slack, Gather

• Flutter
• Java, Scala, JavaScript, TypeScript, Python, Dart
• Koin, Coil, Jetpack Navigation
• MVP
• PostgreSQL, Firebase Realtime Database, Room, Realm
• Socket.IO, React Native, AWS, Docker, Node.js, Express, Sequelize, Chai, Spark

• Migrated an Android view-based app to Jetpack Compose over the course of a year
• Specifically took charge of refactoring various features intertwined with RecyclerView
• Required not just 'interpreting' existing logic to fit Jetpack Compose, but 'translating' imperatively implemented features to declarative ones suitable for functional programming

• Applied animations to customer-registered images to provide flashy effects
• Initially developed based on Android View, implementing it in a ViewHolder including ImageView, but later redeveloped based on Jetpack Compose when migrating the app
• For Android View-based development, implemented by manipulating ImageMatrix
• For Jetpack Compose-based development, implemented custom ContentScale
• Required understanding of image caching

• Directly implemented pedometer feature using Android components such as Service and Broadcast Receiver
• Used Realm DB to store walking records on device and sync with server

• Developed a feature that collects user's diet and exercise data to create and share three types of images externally
• Used Jetpack Compose to create the images
• MVVM structure was very helpful in implementing various data operations without errors in different situations

• Unlocked Milligram app's pro features through subscription payments
• Ensured user's payment status is properly synced across all screens in the app to show or hide features
• Implemented error handling, retry logic, etc.

• Developed a chatbot to assess users' fitness level, target intensity, exercise experience, etc.
• Knowledge of data structures such as linked lists and queues was very helpful in implementing the chatbot
• Developed the chatbot based on Socket.IO
• Provided various diet and exercise information, including workout videos, daily through a subscription service
• Calculated achievement based on workout video playback information

Babitalk: A plastic surgery/procedure information app with over 7 million downloads and 1 million monthly users Also serving as an 'AI Facilitator', researching and presenting productivity improvements through AI utilization

Milligram: Winner of the Google Play's 2022 Best Self-Improvement App. No.1 in diet diary category in both App Store and Google Play in Korea, with over 1 million cumulative downloads

Two-time winner of the Brand of the Year Award, a women's total diet solution

• October 2018: Joined as a backend developer
• November 2018 ~ August 2019: Served as the sole data engineer, developed the data dashboard
• May 2019 ~ January 2022: Developed the Dano app as an Android app developer

• Jetpack Compose library
• Detects when a Composable is exposed to a user by a certain percentage or more
• Documented development process concerns, problems, solutions, and limitations in a blog post

• A reading record app developed alone as a side project
• Implemented the app using Flutter and utilized Firebase Realtime Database for data

• A dating app released on Play Store and App Store, but currently discontinued
• Developed the app using Flutter
• Developed the backend using Node.js and TypeScript
• Developed chat features using Socket.IO

A newsletter sharing "things you might wonder how I knew" - about 200 newsletters sent, over 1,600 subscribers, over 600,000 cumulative views.

Dreamed of becoming a musician before becoming a developer, engaged in composition activities.

• 이런 노래
• 끝
• 용건만 간단히
• SoundCloud

Engaging in art activities using ChatGPT and DALL-E

• Bachelor of Arts in Korean Language & Literature, Korea University | 2012 ~ 2019
• Bachelor of Science in Mathematics, Korea University | 2012 ~ 2019
• Spanish Department, Hanyoung Foreign Language High School | 2008 ~ 2011