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I am looking for a full-time job to enhance my skills while gaining experience and knowledge. With great passion for Information Technologies and professional development, I am searching for a place to satisfy these needs. I have experience in Java development with proficiency in Spring Boot, REST APIs, and database management.…

Mikalai Bytsko

Developer, Programmer, Back-End Developer

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I am looking for a full-time job to enhance my skills while gaining experience and knowledge. With great passion for Information Technologies and professional development, I am searching for a place to satisfy these needs. I have experience in Java development with proficiency in Spring Boot, REST APIs, and database management.…

Available to hire

I am looking for a full-time job to enhance my skills while gaining experience and knowledge. With great passion for Information Technologies and professional development, I am searching for a place to satisfy these needs. I have experience in Java development with proficiency in Spring Boot, REST APIs, and database management.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Russian

Fluent

English

Advanced

Polish

Advanced

Work Experience

Java Developer at Tietoevry

May 1, 2025 - August 22, 2025

Worked on several systems managing Swedish citizens' personal data, including legacy modernization with Java Servlets, developing an admin panel using Spring MVC and Thymeleaf, a notification service with RabbitMQ, and Spring Batch for scheduled jobs. Responsibilities included building web UIs, RESTful APIs, maintaining legacy components, messaging flows, database schema management, testing, and participating in Agile processes.

Java Developer at Decerto

May 1, 2023 - August 22, 2025

Developed new features for a large-scale insurance platform. Built RESTful endpoints with Spring Boot and Spring Data, integrated backend with AngularJS frontend, managed PostgreSQL and H2 databases, migration with Liquibase, wrote tests with Spock and Groovy, worked with Dockerized applications, and participated in Agile ceremonies.

Java Backend Developer at Decsoft

May 1, 2022 - August 22, 2025

Developed and maintained government and private sector applications in Poland. Built and maintained REST APIs using Spring Boot, supported applications based on Servlets and JSP, integrated SOAP services, deployed and configured Payara Server, utilized Hibernate ORM with PostgreSQL, and optimized SQL queries. Fixed bugs and delivered new features.