• Built complex UI based on combination of UITable/Collection views like scene with post and comments where both can contain video, audio, images, tags and text. • Implemented user Role Based Access Control such as moderating topics/comment

Promo video creating tool for autodealers.

Reach functionality of media compositor which allows to make video from several parts by merging,

adding transition effects, adding text, picture etc.

Implemented complex UI based on UICollectionView with auto-sizing cells, expandable sections, multiple selections and animations. Implemented video upload manager with such features as splitting media file into small chunks, pause/resume each upload, progress monitoring, max simultaneously uploads count limiting. Implemented use case to download video from server and import to gallery with background mode support. Redesigned video compositing framework to fix multiple issues, added video transition dissolve effect and implemented background music smooth volume muting logic on the intervals where video has its own voice/audio track. Implemented per-user storage with memory management options such as manual/auto cache cleaning. Improved app performance by moving execution of heavy operations from main queue to GCD queues with multiple priority levels.

Built complex UI based on combination of UITable/Collection views like scene with post and comments where both can contain video, audio, images, tags and text. Implemented user Role Based Access Control such as moderating topics/comments.

Implemented chat with attachments and offline-storage based on Realm. Implemented a lot of reusable UI elements and logic classes. Created over 30 scenes.

Implemented priority queue for BLE communication tasks. Implemented lost cardio-records collecting using background tasks. Improved app stability and performance by solving race conditions and fixing memory leaks caused by strong refence cycles.

Created Mercure SSE HUB framework-client for iOS based on RxSwift. Implemented server-side event driven app routing. Implemented QR-code scanner and Sign-in with QR use case. Build 8-bit style UI using custom fonts and gif animations.

Prepared dataset (filtering, complementing, balancing, augmentation). Trained model with CreateML tool. Implemented custom camera view with luminosity observation and flashlight control. Implemented classification filter using pretrained MobileNetV2. Implemented bug and plant classifier with 2 modes: local using CoreML and remote. Developed and maintained over 7 other apps by fixing bugs, improving stability and adding new features.