CareerPlan

Java Backend Engineer 100% (f/m/d)

Madrid, ESFull-time2026-10-26 → 2026-11-10

Core

Develop, enhance, and maintain a business-critical enterprise platform built on Java/Jakarta EE technologies.

Role type

Senior IC Java Backend Engineer

Builds

Enterprise platform applications and REST APIs

Domain

Financial services / Enterprise Java

Required skills

Java 21, Jakarta EE, JPA/Hibernate, Maven, REST APIs, Oracle SQL, JUnit, Mockito, Agile

Preferred skills

JBoss EAP, WildFly, OpenAPI Generator, SOAP/JAX-WS, Apache CXF, JMS, Splunk, OpenTelemetry, Docker

Technologies

Java, Jakarta EE, JPA, Hibernate, Maven, Oracle, JUnit, Mockito, JBoss EAP, WildFly, OpenAPI, SOAP, JMS, Splunk, OpenTelemetry, Docker

Responsibilities

Develop and maintain backend applications using Java 21 and Jakarta EE; Design and implement REST APIs; Integrate with internal and external systems; Develop database-related functionality using Oracle; Write clean, maintainable, and testable code; Create and maintain automated tests; Troubleshoot and resolve application defects and performance issues; Support deployment and release activities.

Seniority

Senior, hands-on IC