Job Summary: We are seeking a Java Backend Consultant for a public sector project, participating in the development and maintenance of applications in complex environments. Key Highlights: 1. Participation in application development and maintenance 2. Public sector project 3. Complex environments Java Backend Consultant We are seeking a Java Backend Consultant to join a public sector project, participating in the development and maintenance of applications in complex environments. Requirements More than 8 years of IT experience. At least 4 years of experience with Java and Spring. Experience with Oracle. **Frontend knowledge:** HTML, CSS, JavaScript (jQuery, AJAX or Bootstrap). University degree. Required experience (minimum 3 years in): Web services (SOAP and/or REST). Persistence (JPA / Hibernate). Reporting (Oracle Reports, JasperReports or similar). Testing (JUnit, Selenium, SonarQube...). Deployments (WebLogic, Tomcat or similar). Version control (SVN / Git) and CI/CD (Maven, Jenkins...). Agile methodologies and management tools (Redmine or similar). Knowledge of security, data protection, accessibility, and electronic signature. Conditions **Work mode:** Hybrid (1 day on-site). **Location:** Madrid (Plaza Castilla area). Public sector project. Java, JPA, SOAP, REST