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Alexander

Java-розробник

Age:
29 years
City of residence:
Zaporizhzhia
Ready to work:
Remote

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ALEXANDER YAKUBA
Java Backend Developer
📧 [open contact info](look above in the "contact info" section) • 📱 [open contact info](look above in the "contact info" section) • 🔗 github.com/Yakuba001

SUMMARY

Java Developer with a foundation in Spring Boot, REST API, and Docker. Focused on backend
development, solid understanding of Java Core / Concurrency, and writing automated tests (JUnit 5, Spring
Boot Test).

TECHNICAL SKILLS

Languages & Platform Java 22, Concurrency (Virtual Threads, ExecutorService, CAS, LockSupport),
JMM, Stream API, Collections
Frameworks Spring Boot 3, Spring Data JPA, Spring MVC, Spring AOP, Lombok, Apache POI
Databases PostgreSQL, JPA / Hibernate, H2
Testing JUnit 5, Mockito, Spring Boot Test
Tools & DevOps Docker, Git, Maven, GitHub Actions (CI), REST API
Languages Ukrainian (Native), English (B1 — Intermediate: Technical reading &
conversational)

PROJECTS

org-tg-bot | Java 22, Spring Boot 3, Spring Data JPA, Docker, PostgreSQL, Gemini API
🔗 github.com/Yakuba001/org-tg-bot

Organizer service built with layered architecture (Controller / Service / Repository / DTO).
• Implemented a reminder module ( @Scheduled ), media file handling, and integration with the Gemini API.
• Designed a State Machine for user state management and report export to Excel (Apache POI).
• Covered core business logic with Unit and Integration tests (JUnit 5, Spring Boot Test).
• Containerized the application with Docker and configured a CI pipeline (GitHub Actions).

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