10/27/2026 updated
100 % available
Senior Java Developer
Greece
Only remote
Magister degree, National Technical University Kharkiv Polytechnic InstituteJava (Programming Language)HibernateJUnitPostgreSQLLiquibaseApache MavenRabbitMQMockitoSpring MVCObject-Oriented Programming (OOP)Oracle 10g/11gSpring BootSpockSpring DataAWS Aurora
Performance-driven Senior Backend Engineer and B2B Contractor with 8+ years of expertise leading technical
designs and scaling enterprise-grade Java applications. Deeply rooted in OOP/SOLID principles, combining strong architecture skills (Spring WebFlux, Temporal.io, AWS Aurora) with a highly adaptive, fast-learning mindset that enables rapid onboarding into complex domains. Proven ability to thrive within high-velocity Agile (Scrum) frameworks, actively driving Sprints, Daily Standups, and Retrospective Meetings to foster continuous team improvement. Collaborates directly across distributed, multicultural teams to align business needs with technical execution. Available for remote B2B contracts within EU/CET timezones.
Experience
Professional experience0 - 5 years
Freelancer since2024
Languages
EnglishFluentGreekFluentRussianNative speakerUkrainianNative speaker
Project history
Projekt fuer Telenor Sweden: Analyse von Geschaeftsanforderungen, Erstellung technischer Loesungen und Designs, Implementierung und Weiterentwicklung bestehender Funktionalitaeten, Troubleshooting, Debugging, Integration von Softwarekomponenten, Code-Review, Performance-Verbesserung, JDK-Upgrade sowie Oracle-zu-PostgreSQL-Migration. Tech Stack: Java Core, Java 8, Spring Boot, Spring Data JPA, Spring WebFlux, Caffeine Cache, Liquibase, Microservices, AWS, Kubernetes, Hibernate, Oracle Database, IntelliJ IDEA, Jenkins, Github, PostgreSQL, Maven, Temporal.io, Unleash, Jira, Confluence, RabbitMQ, REST API, Kibana Elasticsearch.
Projekt fuer Vertafore: Analyse und Schaetzung von User Stories, Vorbereitung und Implementierung technischer Loesungen, Erstellung von Dashboards und Datasets in Amazon QuickSight, Bug Fixing, Entwicklung neuer Funktionalitaeten und Praesentation implementierter Features. Tech Stack: Java, Oracle, IntelliJ IDEA Community Edition, Oracle SQL Developer, Gitlab, Amazon QuickSight.
Projekt fuer A1 Telekom: Analyse und Schaetzung von User Stories, Vorbereitung und Implementierung technischer Loesungen, Bug Fixing, Wartung von PROD und prePROD, Schreiben von JUnit-Tests, Praesentation implementierter Features. Tech Stack: Java, Oracle, Spring, Spring Boot, REST, SOAP, Microservices, Eclipse IDE, Oracle SQLDeveloper, JIRA, Git, Log4j, IntelliJ IDEA.