Position Summary: We are seeking a Java-experienced professional to design and develop efficient back-end services, optimize graphical interfaces, and ensure security within a modernization project. Key Highlights: 1. Integration into a key project for the modernization of the trading platform. 2. Collaboration with a multidisciplinary team and agile methodologies (SCRUM, SAFe). 3. Active contribution to the evolution of an essential platform. We seek a Java-experienced professional (versions 8 to 21) to join a key project for the modernization of our trading platform. Your responsibilities will include designing and developing efficient and reliable back-end services, as well as optimizing the graphical interface to ensure an optimal user experience. You will be responsible for ensuring the security and regulatory compliance of implemented solutions, aligning them with internal guidelines and external standards. You will translate complex business requirements into scalable designs, applying best practices in Java and agile methodologies such as SCRUM and SAFe within a multidisciplinary team environment. This full-time temporary position will enable you to actively contribute to the evolution of an essential platform while collaborating with a motivated and qualified team. A background in engineering and the ability to tackle complex programming challenges are highly valued. 4–6 years of Java development experience. Proficiency in Java 8 or later, up to version 21. University degree in Technical Engineering or a related field. English proficiency at B2–C1 level, both spoken and written, for effective communication in an international environment. Demonstrated ability to design and develop scalable, high-performance back-end services. Experience in enhancing graphical user interfaces (GUIs). Knowledge of security principles and regulatory compliance. Familiarity with agile methodologies such as SCRUM or SAFe. Ability to translate business requirements into effective technical solutions.