Dmitriy

Dmitriy Bulym
JAVA SOFTWARE DEVELOPER
Sumy Region, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)

Summary
Java Developer with hands-on experience building Spring Boot microservices and REST APIs at
WinWin.Travel. Proficient in Java, Spring ecosystem, PostgreSQL, and Hibernate. Passionate about
scalable backend architecture and eager to contribute to ambitious products with real impact.

Skills
Programming languages: Java, JavaScript, TypeScript
Frameworks and technologies: Spring (Spring Boot, Spring MVC, Spring Data JPA), Angular,
NextJS, Hibernate
Databases: PostgreSQL, Oracle, MySQL, MongoDB
Tools and Utilities: Git, Maven, Gradle
Testing: JUnit, Postman
Other: REST API, JSON, Swagger, Linux/CLI, Agile / Scrum

Experience

WinWin.travel | Java Developer Intern | Remote​ Jun 2023 – Jan 2024
●​ Developed and maintained Spring Boot microservices powering hotel data aggregation from the
HotelBeds integration, handling search queries for destinations like Amsterdam, London, and
Barcelona
●​ Built RESTful endpoints for the hotel search engine, supporting filters for pet-friendly stays, family
rooms, accessibility needs, and solo traveler preferences using Spring MVC and PostgreSQL
●​ Integrated PostgreSQL persistence for hotel data points collected from 8,000+ hotels; wrote
JPA/Hibernate queries and Liquibase migrations
●​ Collaborated closely with the frontend team (React/TypeScript) to align API contracts for the
Tinder-like swipe interface and side-by-side comparison feature

Projects

Scientific Content Management System – Spring, Angular
●​ Designed and implemented a modular, secure server-side architecture using Spring Framework,
ensuring high performance, component interoperability, and scalability
●​ Tested backend API correctness and server interaction using Postman, ensuring high functional
coverage and security compliance
●​ Developed a dynamic, responsive client-side application using Angular, fully meeting defined
functional requirements
●​ Performed end-to-end frontend testing to verify interface correctness and seamless client-server
communication

Education
Master’s degree in Software Engineering
National Transport University (NTU) | Kyiv | 2022 – 2024
Bachelor’s degree in Computer Science
National Transport University (NTU) | Kyiv | 2018 – 2022

Languages
Ukrainian — Native English — Pre-Intermediate (A2)