Денис

Denis Denisov
Java Developer

■ Kyiv, Ukraine ■ [відкрити контакти](див. вище в блоці «контактна інформація») ✉■ [відкрити контакти](див. вище в блоці «контактна інформація»)
■ GitHub: github.com/Develop2Den ■ LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)

SUMMARY
Java Developer with hands-on experience in backend development, working with legacy systems, and
optimizing codebases. Proficient in building REST APIs, managing databases, and integrating
technologies like Docker and Redis. Strong understanding of Spring ecosystem, testing methodologies,
and software architecture principles. Motivated to contribute to a collaborative team, solve complex
problems, and deliver efficient backend solutions.

TECHNICAL SKILLS
■ Languages: Java
■ Databases: PostgreSQL
■ Frameworks: Spring Boot, Spring Security, Hibernate (JPA, JDBC)

■ Tools & Technologies: Docker, Redis, Swagger, Maven, Git, Flyway

■ Testing: JUnit, Mockito Version Control: GitHub, GitLab

■ Architecture: REST API, Microservices

SOFT SKILLS
Punctuality • Teamwork • Responsibility • Learnability • Analytical Thinking
PROJECTS
■■ Chat “Chat Your Way” (01.2025 – 08.2025)
Role: Back-End Developer
• Developed and maintained backend for a real-time chat app.
• Refactored and optimized legacy code, fixed bugs, and added new features.
• Implemented authentication, caching (Redis), and RESTful services.
Stack: Java, Spring Boot, Spring Security, Redis, Docker, Swagger, JUnit, Mockito
■ GitHub: github.com/Chat-Your-Way/ChatYourWay-App

■ Final Project “LinkedIn” (2024)
Role: Back-End Developer (Team of 4)
• Implemented registration, authentication, and 'add friends / likes' features.
• Integrated Swagger documentation and Dockerized the app.
Stack: Java, Spring Boot, Spring Security, Docker, REST API, JUnit, Mockito
■ GitHub: github.com/Develop2Den/Final_Project_Link
■ Mini-project “Client-Bank” (2024)
• Simulated client-bank behavior with transactions, authentication, and persistence.
Stack: Java, Spring Boot, PostgreSQL, Git
■ GitHub: github.com/Develop2Den/clientBank
WORK EXPERIENCE
Freelancer (Front-End Developer) (2023–2024)
• Delivered responsive web interfaces for small businesses and clients.
Java developer (Back-End Developer)
• From January 2025 to September 2025, worked as a Java developer at the startup chat "Chat-Your-Way".
EDUCATION
DAN.IT Education Kyiv National Economic University
Full Stack Developer (Front-End / Back-End) Specialist Diploma — Organization Management
LANGUAGES
• English: Pre-Intermediate (A2)
• Ukrainian / Russian: Native