Developing fintech applications, in particular: - discussion of new functionality and evaluation of deadlines;- creating new features;- refactoring;- redesign;- creating plugins for Android and IOS;- writing unit-tests and integration tests;- publishing to Google Play and AppStore.

Supported an existing application, in particular:- creating new features;- bug fixing;- refactoring the Java part in Kotlin;- application testing.

Developed several applications from scratch, such as - video calling application based on one WebRTC technology,- tracker application based on Google Maps API/Yandex Maps API,- biometric signature application based on Camera API, AI. Also supported several existing applications and added new functionality. In particular, participated in such stages of development as:- technology selection and timing assessment;- development of application architecture(using SOLID, Clean Architecture);- development of application business logic (Kotlin);- preparation and publication applications to the Google Play (Google play console).

Refactored application, in particular:- dividing a monolithic application into features;- development of architecture of dynamic feature modules;- сreating a dynamic feature modules;- application testing (Unit-test, UI-test).

Developed an application from scratch for renting goods. In particular, I did the following:- UI/UX design (based on Material Design principles), prototyping (Adobe XD);- development of application architecture(using SOLID, Clean Architecture). Presentation layer architecture - MVVM;- development of application business logic (Java);- application testing (Unit-test, UI-test);- preparation and publication applications to the Google Play (Google play console).