Java Developer (m/f)

Java Developer

Location: Luxembourg

Are you ready to take your career to the next level? Do you thrive in environments that challenge and inspire you? Would you like to grow within a team that values both excellence and enjoyment at work?

Taleo Consulting is an international management consulting group with offices in France, Luxembourg, Belgium, The Netherlands, Switzerland, Spain, Singapore, Portugal, and Italy.

We've grown into a team of 450+ talented professionals across 10 offices worldwide, partnering with leading organizations in Financial, Life Sciences, Retail, and Energy - Sectors, to drive transformation and deliver lasting impact.

At Taleo, you'll find more than just a job. You'll join a community of ambitious consultants who share a passion for growth, innovation, and teamwork. Together, we create an environment where you can develop your skills, take on new challenges, and truly make a difference.

What Will You Do?

At Taleo Consulting, we believe that our growth starts with our people. When our consultants thrive, so do our clients. Motivated, curious, and passionate professionals make a real impact, not only on their own careers but also on the success of the organizations they support.

We're looking for individuals who embody our values and help us foster strong, trust-based relationships with both our clients and our teams across the globe. Our success is built on the talent, collaboration, and commitment of our people and we're now looking for a Java Developer to join our journey :

• Design, develop, and maintain a new internal application dedicated to payment flow management within a payment ecosystem.
• Implement and enhance functionalities covering:
• Payment controls and validation.
• Compliance and regulatory checks.
• Exception management and processing.
• Payment flow monitoring and operational controls.
• Contribute to the implementation of SEPA 2026 requirements (SR2026) and ensure the application remains aligned with evolving payment standards.
• Contribute to the migration towards and compliance with ISO 20022 standards, including XML-based payment messages and validation.
• Design and develop robust, scalable, and maintainable Java applications using modern Spring technologies.
• Develop and integrate REST APIs and asynchronous/messaging-based interfaces with enterprise payment systems.
• Work on database persistence and data processing using Oracle, Spring Data JPA, and Hibernate.
• Implement secure application components using Spring Security, OAuth2, and JWT.
• Develop automated unit and integration tests and ensure high levels of code quality and test coverage.
• Contribute to production stability, application monitoring, troubleshooting, and operational excellence.
• Participate in code reviews, technical design discussions, and continuous improvement of development practices.
• Ensure compliance with technical, security, regulatory, and market standards throughout the development lifecycle.
• Contribute to containerized and cloud-ready deployments using Docker and Kubernetes.

How do we imagine our future Java Developer ?

• 6+ years of professional experience in Java development, ideally within banking, financial services, or payment environments.
• Strong expertise in Java 11/17/21 and modern Java development practices.
• Strong hands-on experience with:
• Spring Framework 6.x
• Spring Boot 3.x
• Maven
• Spring Data JPA / Hibernate
• Oracle databases
• Solid knowledge of REST API development and integration, including Spring Boot Web and/or Spring WebFlux.
• Experience with OpenAPI / Swagger and API documentation.
• Good understanding of application security, particularly:
• Spring Security 6.x
• OAuth2
• JWT / Nimbus JOSE + JWT
• Experience with messaging and enterprise integration technologies, particularly:

• IBM MQ
• JMS
• Spring Integration
• Strong knowledge of XML technologies, including JAXB, DOM4J, Jaxen, SAAJ and XSD-based XML validation.
• Experience with automated testing using JUnit 5 and Spring Boot Test.
• Familiarity with code quality and observability tools such as SonarQube, JaCoCo, Logback, SLF4J, and Spring Boot Actuator.
• Experience with Docker and Kubernetes.
• Knowledge of payment systems, SEPA, ISO 20022, or banking transaction processing is highly desirable.
• Experience working in environments with strong regulatory, security, reliability, and production stability requirements.
• Ability to work on complex technical transformation projects in a structured and collaborative environment.
• Strong analytical and problem-solving skills, with a focus on reliability, scalability, maintainability, and operational excellence.
• Good communication skills and ability to collaborate effectively with technical and business stakeholders.

We attract top talent and empower them with the right environment to excel and drive collective success.

Why should you join us?

By joining Taleo, you'll become part of a talented, international, and dynamic team. You'll benefit from real career growth opportunities, continuous learning, and the chance to build long-lasting relationships across borders and industries.

If you recognize yourself in this description and are ready to grow with a company that values ambition, collaboration, and excellence, let's connect.

Share your CV and take the next step in your journey with Taleo