CareerPlan

Java Developer (m/w/d)

Hamburg, HAMBURGFull-time2026-09-16 → 2026-10-03

Core

Modernizing enterprise-critical Java applications and migrating legacy Swing interfaces to a modern React frontend architecture.

Role type

Senior Java Developer (Backend & Frontend)

Builds

Modernized Java applications and React-based user interfaces for enterprise clients

Domain

Enterprise Software Development / Legacy Modernization

Deliverable

production ML models | product features

Required skills

Java (Java 21), JavaEE, React, Oracle Database/JDBC, Maven, Gradle, Git/GitHub, JUnit, Agile methodologies (Scrum/Kanban)

Preferred skills

Experience with legacy code and software modernization

Responsibilities

Develop and optimize Java backend and frontend components, perform code analysis and refactoring, create and maintain automated tests, implement UI/UX specifications, ensure quality standards and coding guidelines

Seniority

Senior, hands-on IC