Денис

DENYS
KOYNASH
Java Developer

About me EXPERIENCE (PROJECTS)
I am a Junior Java Developer motivated to grow
Messanger
and contribute to real projects. I have hands-on
experience with Java, Spring Boot, SQL, unit Took a leading role in developing a messenger application
testing, and basic multithreading and ER as a university team project. Designed and implemented
diagram knowledge. During a trainee program at the backend using Spring Boot and WebSockets, and
EPAM Systems, I strengthened my technical and contributed to the frontend with React, ensuring seamless
teamwork skills. I’m eager to keep learning, take
real-time communication and application functionality.
on new challenges, and contribute with
dedication and a positive attitude. Reservation system
Developing a personal project — a reservation system —
[відкрити контакти](див. вище в блоці «контактна інформація»)
with a Spring Boot backend.
Web Sites
[відкрити контакти](див. вище в блоці «контактна інформація»)
Created a sites based on React and developed the part
of back-end using Java(Spring).
Ukraine, Kyiv
University Projects & Labs
Completed labs on algorithms and data structures
@koynashden
(sorting, linked lists, trees, graphs – BFS, DFS) and
developed GUI applications with interactive
in LinkedIn frontends and backend logic.

EDUCATION
GitHub
Poltava Lyceum №1
LANGUAGES Informatics class
2020 - 2024
Ukrainian
Taras Shevchenko National University of Kyiv
English (B1+) Computer Science (Applied Programming)
2024 - Present
PERSONAL QUALITIES
Traniee Java developer(Courses)
Cooperation EPAM Systems
2025 - during 4 months
Creativity
Self-discipline SKILLS

Analytical approach Java React/Vue
Critical thinking Spring framework Python/C++
Leadership MySQL Multithreading
Git