09/02/2026 updated
100 % available
Senior Java Backend Developer | Java / EE, Hibernate, Spring, Oracle | 12 years experience
Wroclaw, Poland
Only remote
MSc in Software EngineeringJava (Programming Language)HibernateSpring FrameworkPL-SQLSQL DatabasesBackendSpring Batch
Senior Java Backend Developer with 12+ years of commercial experience in enterprise Java systems.
Strong experience with Java, Java EE (JEE), EJB, JBoss 4, Hibernate, Spring, Spring Batch, Oracle, SQL, PL/SQL, BPMN workflows, SOAP/WSDL, XML, Quartz, Tomcat, Liferay, Jenkins, Gradle, Ant, Git and SVN.
Recent experience also includes Java 17, PostgreSQL, XSLT and Apache HTTP Client.
Experienced in backend development, long-running workflows, large-scale batch and migration processes, database design and optimization, production troubleshooting, code reviews and technical delivery.
Main industry experience: telecom BSS/CRM systems, including a long-term project for British Telecom OnePhone.
Oracle Certified Professional: Java SE 21 Developer.
Available for B2B/freelance work, 100% remote from Poland. German B2/C1 and professional English.
Experience
Professional experience10+ years
Freelancer since2025
Languages
GermanFluentEnglishFluentPolishNative speakerRussianBasic knowledge
Certificates
OCP: Java SE 21 Developer
Oracle2026