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Hi, I’m Sungmin Choi (Tommy). I’m a hands-on Android/Frontend engineer who loves building production apps from architecture to deployment, with a focus on performance and maintainability. I value feedback from real users and iteratively improve features to enhance the user experience. My recent work spans Android apps with Jetpack Compose, MVVM, and Kotlin Coroutines, to full-stack web frontends and cloud deployments. I’ve implemented automated testing, streamlined Google Play release pipelines, and contributed optimizations to open-source projects.…Hi, I’m Sungmin Choi (Tommy). I’m a hands-on Android/Frontend engineer who loves building production apps from architecture to deployment, with a focus on performance and maintainability. I value feedback from real users and iteratively improve features to enhance the user experience. My recent work spans Android apps with Jetpack Compose, MVVM, and Kotlin Coroutines, to full-stack web frontends and cloud deployments. I’ve implemented automated testing, streamlined Google Play release pipelines, and contributed optimizations to open-source projects.

Sungmin Choi (Tommy)

App Developer, Web Developer, Back-End Developer, +2

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Hi, I’m Sungmin Choi (Tommy). I’m a hands-on Android/Frontend engineer who loves building production apps from architecture to deployment, with a focus on performance and maintainability. I value feedback from real users and iteratively improve features to enhance the user experience. My recent work spans Android apps with Jetpack Compose, MVVM, and Kotlin Coroutines, to full-stack web frontends and cloud deployments. I’ve implemented automated testing, streamlined Google Play release pipelines, and contributed optimizations to open-source projects.…Hi, I’m Sungmin Choi (Tommy). I’m a hands-on Android/Frontend engineer who loves building production apps from architecture to deployment, with a focus on performance and maintainability. I value feedback from real users and iteratively improve features to enhance the user experience. My recent work spans Android apps with Jetpack Compose, MVVM, and Kotlin Coroutines, to full-stack web frontends and cloud deployments. I’ve implemented automated testing, streamlined Google Play release pipelines, and contributed optimizations to open-source projects.

Available to hire

Hi, I’m Sungmin Choi (Tommy). I’m a hands-on Android/Frontend engineer who loves building production apps from architecture to deployment, with a focus on performance and maintainability. I value feedback from real users and iteratively improve features to enhance the user experience.

My recent work spans Android apps with Jetpack Compose, MVVM, and Kotlin Coroutines, to full-stack web frontends and cloud deployments. I’ve implemented automated testing, streamlined Google Play release pipelines, and contributed optimizations to open-source projects.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Sole Developer at MLV app Android

October 1, 2024 - Present

Designed and implemented an end-to-end Android production app using Jetpack Compose and MVVM, managing shared state across screens and long-running operations with Kotlin coroutines; implemented OpenGL-based RAW video rendering optimization using NDK/JNI; added unit tests with JUnit and automated the Google Play release pipeline; contributed thumbnail optimization to an upstream open-source project.

Sole Developer & Operator at StackStocks.net

July 1, 2020 - January 31, 2021

Built a full-stack stock indicator service (React/Express) with AWS EC2 and Route 53, created a user-facing landing and onboarding flow, and maintained end-to-end deployment.

Frontend Developer at Gonggi App

January 1, 2021 - June 1, 2021

Developed a map-based location app in React Native, integrating Firebase authentication and real-time data sync for restaurant discovery.

Community Manager & CX at MacOne Co., Ltd.

May 1, 2022 - July 1, 2023

Managed Kakao OpenChat and Discord communities for an early NFT project; monitored server stability, escalated issues to engineering, and engaged in investor-facing channels to sustain pre-launch activity.

Program Planner at Dobong District Office

January 1, 2020 - July 1, 2020

Planned an indie artist support initiative and pivoted delivery from offline to online during COVID-19; designed supporting web infrastructure.