**Avant de postuler à un emploi, sélectionnez votre langue de préférence parmi les options disponibles en haut à droite de cette page.** Découvrez votre prochaine opportunité au sein d'une organisation qui compte parmi les 500 plus importantes entreprises mondiales. Envisagez des opportunités innovantes, découvrez notre culture enrichissante et travaillez avec des équipes talentueuses qui vous poussent à vous développer chaque jour. Nous savons ce qu’il faut faire pour diriger UPS vers l'avenir : des personnes passionnées dotées d’une combinaison unique de compétences. Si vous avez les qualités, de la motivation, de l'autonomie ou le leadership pour diriger des équipes, il existe des postes adaptés à vos aspirations et à vos compétences d'aujourd'hui et de demain. **Fiche de poste :** **Job Summary:** We are seeking a highly skilled and experienced Senior Java Full Stack Developer with a minimum of 5 years of experience to join our dynamic Marketing Technologies AI team. The ideal candidate will be responsible for designing, developing, and maintaining robust, scalable, and high-performance full-stack applications. This role requires strong proficiency in Java back-end development, modern front-end frameworks, and expertise in cloud platforms, DevOps practices, and critical system integrations. **Responsibilities:** + Lead the design, development, and implementation of complex full-stack applications using Java and modern front-end technologies. + Develop and maintain highly scalable and reliable microservices. + Build responsive and intuitive user interfaces using React, Angular, and JavaScript. + Integrate and manage authentication and authorization systems (e.g., OAuth2, JWT, SSO). + Implement and maintain CI/CD pipelines and other DevOps practices to ensure efficient software delivery. + Work extensively with cloud platforms, specifically Google Cloud Platform (GCP) and/or Azure, leveraging services like Firestore, BigQuery, Pub/Sub, and Cloud Storage. + Design and manage relational databases (SQL) and interact with NoSQL databases. + Deploy and manage applications using containerization technologies like Kubernetes. + Collaborate closely with product managers, UX/UI designers, and other engineers to define, design, and ship new features. + Mentor junior developers and contribute to code reviews, ensuring high code quality and adherence to best practices. + Troubleshoot and debug production issues, providing timely resolutions. + Stay up to date with emerging technologies and industry trends, evaluating their potential impact on our systems. **Required Skills and Experience:** + Minimum 5 years of professional experience in full-stack software development with a strong focus on Java (Java 8+, Spring Boot, Spring Framework). + Expert-level proficiency in modern front-end frameworks: **React, Angular, and JavaScript** . + Demonstrated experience with DevOps practices, including CI/CD pipeline setup and management (e.g., Jenkins, GitLab CI, Azure DevOps). + Hands-on experience integrating and managing authentication and authorization systems (e.g., OAuth2, SAML, JWT, Active Directory/LDAP integration). + Proven hands-on experience with cloud platforms: + Google Cloud Platform (GCP) is strongly preferred, with experience in services such as Firestore, BigQuery, Pub/Sub, and Cloud Storage. + Experience with Azure is also highly valued. + Extensive experience with Microservices architecture principles and development. + Strong practical experience with containerization and orchestration: Kubernetes. + Proficiency in relational databases (SQL), including schema design, query optimization, and ORMs (e.g., Hibernate, JPA). + Experience with NoSQL databases is a plus. + Solid understanding of RESTful API design and development. + Experience with version control systems (Git). + Excellent problem-solving, analytical, and debugging skills. + Strong communication and interpersonal skills, with the ability to work effectively in a collaborative team environment. **Preferred Qualifications:** + Bachelor's or Master's degree in Computer Science, Engineering, or a related field. + Familiarity with message brokers (e.g., Kafka, RabbitMQ). + Experience with testing frameworks (e.g., JUnit, Mockito, Jest, React Testing Library). + Understanding of software security best practices. + Certifications: + Cloud Certifications: + Google Cloud Professional Cloud Developer + Google Cloud Professional Cloud Architect + DevOps/Kubernetes Certifications: + Certified Kubernetes Application Developer (CKAD) + Docker Certified Associate (DCA) + Java Certifications: + Oracle Certified Professional, Java SE Programmer (Java 11 or later) + Spring Certified Professional **Type de contrat:** en CDI _Chez UPS, égalité des chances, traitement équitable et environnement de travail inclusif sont des valeurs clefs auxquelles nous sommes attachés._