Provided the full specter of solution for API on Spring Boot with PostgreSQL on Kotlin for Health Care.Created the solution using TimeScaleDB that helps increase data processing on the amount of time and space complexity.Recreated and helped to find a solution for the problem of removing loops that contain complex ices in business logic using Kafka,Keycloak and Fhir

Kotlin Multiplatform Mobile application for healthcare department of https://www.samsung.com/The application was built with the latest Android guidelines used to have Jetpack Compose components also Firebase components to manage DB and use Rest API for communicating with other parts of the infrastructure.For the best product was used also Amazon S3 and GCP with ML and voice assistant inside.Developed application on Java/Kotlin - JavaFX/TornadoFX for https://www.verizon.com/All cores and features were supported in Java and KotlinFull stack development for desktop and web applications with testing and etc.Client-side communication and fast improvement of product

Developed several applications with Spring stack. My responsibilities were the MVC approach to build business logic and Rest-API for communicating with the front-end.In development, I used to use different approaches for building apps like TDD and others. Also had different ways about projects like: from zero to hero and develop new features for a ready platform like this: https://www.bikeshare.ieLast but not least is the write Unit and other testing and write a little bit of documentation statement.

Managing algorithms and sorting clients and car spare parts. Developing an Android application for local using in company on Java and Kotlin. Backend database using Java and C# for sale used cars: https://ariagroup.com.ua. Developing a DB developed by managed forms 1C and WEB services.

Managed forms on C# and connection with the MSSQL database.

Development of a database for a furniture warehouse.Development of three types of applications: computer version, web version, and Android application using technology: SQL, C# , Java, Firebase, ASPNet.