Віталій

Vitalii Koltok
Back-End Developer
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Warsaw, Poland | [відкрити контакти](див. вище в блоці «контактна інформація»)

PROFILE
I am a passionate backend developer with solid Java and Spring Boot experience. I build and maintain APIs, work with
PostgreSQL, and integrate third-party services. Always digging into performance tweaks and debugging tricky issues — love
teaming up to deliver reliable, scalable systems.

EDUCATION

Bachelor of Computer Science | Polish-Japanese Academy of Information Technology in Warsaw Jan 2023 - Present

KEY SKILLS
Soft skills:
Fast problem solving, Collaboration, Creativity, Critical Thinking, Emotional Intelligence, Flexibility, | Analytical Thinking,
Willing To study and develop, Clear and Effective Communication, Complience with deadlines
Technical skills:
Java 17, Spring Boot, Spring Web, Hibernate, JUnit5, Postman, SQL, PostgreSQL, Javascript, HTML5, CSS, React.js, Maven ,GIT &
Version Control, XML, JSON, MVC, Apache Tomcat, JDBC, HTTP, TCP, DNS
EXPERIENCE

Finance Tracking Application Pet Project

Designed and implemented responsive, user-friendly interfaces using React.js.
Designed and created reliable PostgreSQL database for fast data access.
Implemented user authentication and authorization using Spring Security.
Implemented efficient data handling to minimize latency and improve user experience.
Documented key features and processes for users.

Tech Stack: Java 17, Spring Boot, Hibernate, Javascript, HTML, CSS, React.js, Chart.js, PostgreSQL, Postman, Git

Web Library Application Pet Project

Developed a comprehensive backend using Spring Boot and Hibernate for efficient data management.
Designed RESTful APIs to support CRUD operations, allowing seamless interaction between frontend and backend.
Conducted thorough testing with Postman to ensure functionality and reliability of API endpoints.
Integrated Postgres database for reliable storage and retrieval of book, user, and borrowing records.

Tech Stack: Java 17, Spring Boot, Hibernate, Thymeleaf, PostgreSQL, Postman, Git

LANGUAGES

UKRAINIAN NATIVE

ENGLISH C1

POLISH C1