Worked as part of the Android team responsible for developing a dating application called Romeo. The application has more than 5 million downloads on PlayStore.Worked on migrating application architecture from MVP to MVVM.Worked on migration from XML to Jetpack compose.Implemented new signup process.Implemented new way for users to view and interact with other users' pictures.Worked on improving chat functionality of the application.Migrated app database to Room database.Implemented Work Manager to migrate thousands of users' messages that were stored locally in the old database.

Worked as part of the payments team. Primary focus was creating digital wallets in partnership with Uphold.Main task was to create a code which enables users to convert, send, deposit and withdraw funds to their bank accounts or transfer them between other users of the Globalid/Uphold network.Implemented SEPA transfers, IBAN and Swift validations as well as Visa/Mastercard validations. Used RxJava in combination with the latest Jetpack Android libraries, as well as Apto SDK for ordering physical and digital credit/debit Mastercard cards.Integrated Plaid for connecting USA bank accounts.MVP architecture

Worked on developing a medical application for patients who participate in various clinical trials. The app lets patients track their medical appointments as well as measure blood pressure and glucose level in blood using iHealth smart devices.Integrated iHealth SDK.Integrate charts for blood pressure and glucose measurements history.Add support for notifications and payment information.MVVM architecture.Used Kotlin coroutines and other Jetpack Android libraries (Room database, LiveData, ViewModels)

Created an MVP for a social network called Legacy. Idea behind this application was that users can safely share family photos of their children between other family members.The application UI was similar to Instagram with comments and likes features.For this application I used Kotlin coroutines, Room database, Live data, Dagger.The UI was written using XML.MVVM architecture

Worked on maintaining an Android application using Temptime miniaturized technology to monitor temperature exposure of vaccine vials.Used Camera2 API to detect changes in color of the temperature sensor that is injected on the QR barcode on the vial.Integrated external SDK that recognizes values of the scanned QR code that is on the vaccine vials.

Flume sensor is a smart device which is connected to the home water meter and can provide leak detection in real-time and notify users directly through the mobile app.I was in charge of rewriting old legacy code into the whole new Android app with the new design and using the latest technologies. Created graphs and charts for the water usage so that users can easily browse the data.Add an SDK and logic for connecting to the Flume device using bluetooth.Used MVVM architecture as well as Android jetpack components.