BCSDLab/KOIN_ANDROID
Oct 2024 – Mar 2025
6 Months active
Languages Used
GradleKotlinXMLJavaShellYAML
Technical Skills
Android DevelopmentCode OrganizationCode RefactoringDependency ManagementDesign SystemGradle
DohyeokKim
PROFILE
Dohyeokkim
Over six months, Hyeokdo Kim engineered core features and infrastructure for BCSDLab/KOIN_ANDROID, focusing on timetable management, design system unification, and analytics. He migrated APIs to new versions, standardized data models, and refactored domain logic for reliability and maintainability. Using Kotlin, Jetpack Compose, and Retrofit, Kim integrated robust error handling, enhanced user identity propagation, and improved analytics pipelines. His work included building reusable UI components, implementing CI/CD automation with GitHub Actions, and optimizing state management with MVVM and StateFlow. The resulting codebase demonstrated thoughtful architecture, reduced technical debt, and enabled scalable feature delivery across Android modules.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
121Total
Bugs
13
Commits
121
Features
39
Lines of code
7,288
Activity Months6
Your Network
12 people
Work History
March 2025
18 Commits • 4 Features
Mar 1, 2025In March 2025, BCSDLab/KOIN_ANDROID delivered a set of high-impact features and API migrations that improved analytics quality, standardized data models across Semester and Timetable APIs, and strengthened CI and lint automation, enabling faster, more reliable product decisions.
18 Commits • 4 Features
Mar 1, 2025In March 2025, BCSDLab/KOIN_ANDROID delivered a set of high-impact features and API migrations that improved analytics quality, standardized data models across Semester and Timetable APIs, and strengthened CI and lint automation, enabling faster, more reliable product decisions.
March 2025
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for BCSDLab/KOIN_ANDROID focused on strengthening user identity handling and analytics capabilities. Implemented end-to-end user identification by introducing a standardized GetLoggerUserIdUseCase for formatting user IDs, propagating IDs across EventLogger, and enriching analytics events with signup/profile edit data (gender, department, timestamps). Also established reliable data-domain mapping by adding an id field to UserResponse and propagating it into User.Student with updated mapping in UserMapper. These changes improve analytics accuracy, debugging traceability, and lay groundwork for personalized experiences across the platform.
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for BCSDLab/KOIN_ANDROID focused on strengthening user identity handling and analytics capabilities. Implemented end-to-end user identification by introducing a standardized GetLoggerUserIdUseCase for formatting user IDs, propagating IDs across EventLogger, and enriching analytics events with signup/profile edit data (gender, department, timestamps). Also established reliable data-domain mapping by adding an id field to UserResponse and propagating it into User.Student with updated mapping in UserMapper. These changes improve analytics accuracy, debugging traceability, and lay groundwork for personalized experiences across the platform.
January 2025
1 Commits
Jan 1, 2025January 2025 monthly summary for BCSDLab/KOIN_ANDROID focusing on reliability and user experience improvements in the timetable module. Implemented robustness to prevent loading timetable data when no semester is selected and updated error messaging to a generic connectivity toast, improving user feedback and stability. These changes reduce invalid data scenarios, minimize user confusion, and lay groundwork for broader error handling in the timetable feature.
1 Commits
Jan 1, 2025January 2025 monthly summary for BCSDLab/KOIN_ANDROID focusing on reliability and user experience improvements in the timetable module. Implemented robustness to prevent loading timetable data when no semester is selected and updated error messaging to a generic connectivity toast, improving user feedback and stability. These changes reduce invalid data scenarios, minimize user confusion, and lay groundwork for broader error handling in the timetable feature.
January 2025
December 2024
27 Commits • 10 Features
Dec 1, 2024December 2024: Delivered comprehensive timetable loading enhancements, stability fixes, and architecture cleanups for BCSDLab/KOIN_ANDROID. Key features include Timetable Frame API integration across all semesters with new usecases and rollback support, plus extensive refactor of timetable models and initialization flow for reliable data loading. Significant UI/state improvements moved year selection dialogs and related callbacks to screenState, and introduced a dedicated user frame state. Data freshness improvements and DTO correctness fixes underpin more reliable user data at login. Overall, these changes reduced maintenance burden, improved data reliability, and prepared the codebase for scalable feature growth.
December 2024
27 Commits • 10 Features
Dec 1, 2024December 2024: Delivered comprehensive timetable loading enhancements, stability fixes, and architecture cleanups for BCSDLab/KOIN_ANDROID. Key features include Timetable Frame API integration across all semesters with new usecases and rollback support, plus extensive refactor of timetable models and initialization flow for reliable data loading. Significant UI/state improvements moved year selection dialogs and related callbacks to screenState, and introduced a dedicated user frame state. Data freshness improvements and DTO correctness fixes underpin more reliable user data at login. Overall, these changes reduced maintenance burden, improved data reliability, and prepared the codebase for scalable feature growth.
November 2024
45 Commits • 16 Features
Nov 1, 2024November 2024 (Month: 2024-11) highlights and outcomes for BCSDLab/KOIN_ANDROID. Delivered a cohesive UI Components Library to improve consistency and accelerate feature work, added Checkbox, OutlinedBoxButton, FilledButton color type, and ChoiceDialog, with commits: d425b3b3bfb750e4279f2a6402184e7ec1b58780; 5c79ace99f87b0dc688fed70bf790a4a04b2cf92; e78390eaeeae9bfd5b600c73bba951ad8f2910f; b2f68054d114bb1b45f422281600cac60686dd46. Implemented robust error handling with ErrorResponse serialization fix using @SerialName, reducing parsing errors in API responses (commit 59106f479d7229828c4651fdc10dafed71dd6db4). Expanded timetable functionality with Timetable Editing Dialogs (modify/delete), undo support, snackbar feedback, and parameterized callbacks, enabling safer user workflows (commits fad939edeeda777c8d814c0224b7a1d4a384bad3; 3244e11d5cdbdcd755441c529315a9399547643f; 345c299e3f0e05f0d31dd1b4eb2536877dff339f). Shipped Semester and Timetable data model and UI, including SemesterModel and related use cases, plus Semester settings UI and dialogs, enabling end-user control over semester-driven timetables (commits 64cde415f014f273acff72a733b64900000e6a56; e4e83c544ba9911896d205c86335190821f63376; 14cac12c66e51df3a496dd35615efaea336e9f3f; 9a1cfad7b531f1de38b456e29239b667f8f3120e; d02ecc06ab5ba4f06909796280839724e93cd2ce; e14c593de358171ebf5673b2a9ba2e8ea7f3158d; 46baeecd0bdafa0ec347a9ac02c1bd2ebb6867ad; 9496f5adaabc377f1dd177161cfbd22602b8f5d2). Enabled non-logged-in timetable access and data handling, broadening product reach (a110921b23c6c6713b3a65234144897c328b3961; 4056cf86f80856ad239fb21a9e4378687849d461). Stabilized and polished UI with fixes including Frame Edit Dialog Opening Fix, Semester Deletion Modal Fix, and maxLine scheduling fix, plus UI polish for deletion snackbar and error toasts (56299ccc5110952c751859fce24d5e7551c9c6a5; 2ef1212fb7052b418d4cde541e1ff9a14db8a0a7; ef185de4553308901409e9a76c969c3c09471f51; 9440050160757721c2d85f939513aab8de889fb5; f1e4335f6456a1f459bca526b310463e7bb905ea). These efforts collectively improved user experience, reduced crash surfaces, and accelerated delivery of reliable planning features.
45 Commits • 16 Features
Nov 1, 2024November 2024 (Month: 2024-11) highlights and outcomes for BCSDLab/KOIN_ANDROID. Delivered a cohesive UI Components Library to improve consistency and accelerate feature work, added Checkbox, OutlinedBoxButton, FilledButton color type, and ChoiceDialog, with commits: d425b3b3bfb750e4279f2a6402184e7ec1b58780; 5c79ace99f87b0dc688fed70bf790a4a04b2cf92; e78390eaeeae9bfd5b600c73bba951ad8f2910f; b2f68054d114bb1b45f422281600cac60686dd46. Implemented robust error handling with ErrorResponse serialization fix using @SerialName, reducing parsing errors in API responses (commit 59106f479d7229828c4651fdc10dafed71dd6db4). Expanded timetable functionality with Timetable Editing Dialogs (modify/delete), undo support, snackbar feedback, and parameterized callbacks, enabling safer user workflows (commits fad939edeeda777c8d814c0224b7a1d4a384bad3; 3244e11d5cdbdcd755441c529315a9399547643f; 345c299e3f0e05f0d31dd1b4eb2536877dff339f). Shipped Semester and Timetable data model and UI, including SemesterModel and related use cases, plus Semester settings UI and dialogs, enabling end-user control over semester-driven timetables (commits 64cde415f014f273acff72a733b64900000e6a56; e4e83c544ba9911896d205c86335190821f63376; 14cac12c66e51df3a496dd35615efaea336e9f3f; 9a1cfad7b531f1de38b456e29239b667f8f3120e; d02ecc06ab5ba4f06909796280839724e93cd2ce; e14c593de358171ebf5673b2a9ba2e8ea7f3158d; 46baeecd0bdafa0ec347a9ac02c1bd2ebb6867ad; 9496f5adaabc377f1dd177161cfbd22602b8f5d2). Enabled non-logged-in timetable access and data handling, broadening product reach (a110921b23c6c6713b3a65234144897c328b3961; 4056cf86f80856ad239fb21a9e4378687849d461). Stabilized and polished UI with fixes including Frame Edit Dialog Opening Fix, Semester Deletion Modal Fix, and maxLine scheduling fix, plus UI polish for deletion snackbar and error toasts (56299ccc5110952c751859fce24d5e7551c9c6a5; 2ef1212fb7052b418d4cde541e1ff9a14db8a0a7; ef185de4553308901409e9a76c969c3c09471f51; 9440050160757721c2d85f939513aab8de889fb5; f1e4335f6456a1f459bca526b310463e7bb905ea). These efforts collectively improved user experience, reduced crash surfaces, and accelerated delivery of reliable planning features.
November 2024
October 2024
26 Commits • 7 Features
Oct 1, 2024In October 2024, BCSDLab/KOIN_ANDROID delivered a cohesive Design System Core, expanded UI components, a dialog package, and timetable UI enhancements, while cleaning up dependencies. These efforts unified the user experience, improved stability, and accelerated feature delivery across modules.
October 2024
26 Commits • 7 Features
Oct 1, 2024In October 2024, BCSDLab/KOIN_ANDROID delivered a cohesive Design System Core, expanded UI components, a dialog package, and timetable UI enhancements, while cleaning up dependencies. These efforts unified the user experience, improved stability, and accelerated feature delivery across modules.
Activity
Loading activity data...
Quality Metrics
Correctness88.4%
Maintainability89.2%
Architecture86.2%
Performance84.0%
AI Usage20.6%
Skills & Technologies
Programming Languages
GradleJavaKotlinShellXMLYAML
Technical Skills
API DevelopmentAPI IntegrationAPI MigrationAPI RefactoringActivity Result APIAnalyticsAndroid DevelopmentBackend DevelopmentCI/CDCode CleanupCode FormattingCode OrganizationCode RefactoringComponent DevelopmentCompose
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline