Денис

Denis [открыть контакты](см. выше в блоке «контактная информация») (Telegram)

Denisov
[открыть контакты](см. выше в блоке «контактная информация»)
GitHub
Java developer LinkedIn
Kiev, Ukraine

About Me Hard Skills
Java developer with experience working Java Swagger
with legacy code. I understand how to
adapt to the existing architecture,
optimize the code and make changes
SQL Redis
without breaking the system. I am looking Docker
for a team where I can develop, solve
PostgreSQL
interesting problems and improve my
Spring Git
skills.
SpringBoot GitHub
Soft Skills Spring Security Gitlub
Punctuality Hibernate ( JPA, JDBC ) Maven
Teamwork Rest API JUnit
Responsibility Mockito Flyway
Learnability

Analytical skills Projects
Chat “Chat Your Way” - BackEnd developer
Link back
Work Experience I am involved in developing a chat for communication at the active
01.2025 - now development stage. I am responsible for the backend together with the
Java developer in team. The main part of the work is related to supporting and finalizing
Startup chat - "Chat-Your-Way" legacy code: fixing bugs, refactoring, implementing new features.
2023-2024
Technologies: Java, Spring Boot, Spring Security, Swagger, Docker, REST
Freelancer (FrontEnd Developer)
API, JUnit, Mockito, Redis.
2013-2022
Private entrepreneur What I can do:
9 years Сommercial services ✔ Understand legacy code, analyze and optimize it.
✔ Develop REST API and integrate with other services.
✔ Work with Spring Boot, Spring Security, configure authorization and
Education authentication.
08.2022 - 04.2023/ ✔ Write unit tests (JUnit, Mockito) and cover the code with tests.
02.2024 - 09.2024 ✔ Use Docker for containerization.
DAN.IT Education ✔ Work with cache (Redis) to optimize service operation.
FrontEnd/BackEnd Developer
Final-project “Linkedin” (interpretation of a well-known
social network). - BackEnd developer
Kyiv National Economic
Link back
University
Technologies used: Java, SpringBoot, SpringBootSecutity,
Specialist Diploma /
Оrganization management Swagger, Docker< Rest API, JUnit, Mockito.
Backend part written by a group of 4 developers. I developed
registration, authorization and implementation of the functionality of
Languages adding friends and likes.
English Mini project "Client-Bank" step project . - BackEnd developer
А2 (Pre-Intermediate) Link back
Ukrainian and Russian
Technologies used: Java, SpringBoot, SpringBootSecutity.
Native
Simulation of "client-bank" behavior, with simple interaction functions.