- Research a ML-based gift-cards image generator according to user's common data and a text prompt.  - Sourcing app - markup screen according to design documents, backend integration, search history encryption,  Firebase integration. - Gifts/cards ordering app.

- Massive refactoring to get rid of unnecessary and twisted reactivity in a strict terms which significantly reduced amount of bugs and increased code simplicity and maintainability.  - Re-implemented a mathematically complex UI control implementation with flawless animation. - Sunoco app. Made PayPal integration, home screen redesign, loyalties (InAuth/ReactiveCocoa). - Chevron app. Made redesign of station locator, pump selector wheel custom control. - Dave & Busters gaming prototype development (Unreal Engine 4).

- Figured out a complex data flows of selling/refunding/mobile device activation processes and fixed cooperation with portable receipt printer via Bluetooth. - Mobile Point of Sale app - groceries browser with 3rd parties service integrations(AT&T, HYLA) and receipts mobile printer via Bluetooth.

- Responsible for iOS app and peripheral device asynchronous cooperation via Bluetooth LE. - Made up and implemented a map-into-memory approach for huge data files reading. - Golf playing assistant app - external devices cooperation library via Bluetooth LE: • game tracker - device gets GPS location and club type via NFC touch and notifies iOS app that the player about to swing with particular club in particular location • smart watch - a watch containing all the golf courses with locations of holes/bunkers/etc. and current scores which keeps in sync with iOS app - Develop a reader for few-Gigabytes files with golf courses.

- Researched and developed a prototype of business app on a cross-platform gaming framework. Made a small server service. • remote file storage client • restaurants orders management system - cross platform client (cocos2d-x/C++) • restaurants orders management system - dispatch server (POCO/C++)