Experience in web application development using the Spring Framework, applying modern Java technologies, and integrating with various databases.

LystOk https://lystok.com.ua/ On the project, I utilized WebSocket for implementing asynchronous data exchange between client and server, as well as employed Spring Data JPA in combination with

Specification to simplify interactions with databases and ensure efficient data handling.

On the second CRM project, I utilized WebSocket for efficient bidirectional communication and JDBC for PostgreSQL database interaction. I integrated Elasticsearch for fast, scalable search and Flink for real-time data analysis, improving system performance and gaining valuable development experience.

Since 2020, I have been working as a freelancer, specializing in the development of a web application for sales funnel automation using a Telegram chatbot. During this time, I successfully built a chatbot specifically designed for lead generation and customer lifecycle management.

The development of this application was carried out using the Spring framework, with the utilization of technologies such as PostgreSQL for the database, Thymeleaf for templating, and Spring Security for ensuring application security.