Java Developer – Legacy Modernization

About the role

We are seeking a Java Developer to join our legacy modernization team. You will work on a mission‑critical, high‑availability Java/Java EE codebase, refactoring and modernizing it incrementally while preserving existing behavior.

Key responsibilities

• Read, understand, and safely refactor legacy Java/Java EE code using characterization tests.
• Develop new features and modernize modules following a strict test‑driven development (red‑green‑refactor) approach.
• Design and implement high‑volume, low‑latency components for mission‑critical systems.
• Participate in all development lifecycle phases, from requirements analysis to release.
• Introduce automated tests where missing and support continuous improvement through modern Java/Spring practices.

Required profile

• BS/MS degree in Computer Science, Engineering or a related field.
• At least 3 years of hands‑on experience developing production Java applications.
• Strong object‑oriented analysis and design skills, applying SOLID principles.
• Proven ability to work with limited test coverage and to write characterization tests.

Required skills

• Java, Java EE, JSF, JSP, iBatis, MyBatis, Hibernate.
• Spring Framework, Spring MVC.
• PrimeFaces, RichFaces, IceFaces (legacy JSF component libraries).
• React, REST, HTML, CSS, responsive design.
• JavaScript, Ajax.
• Oracle, SQL, MongoDB.
• Test‑driven development (TDD) and refactoring techniques.