We are looking for our client, a major company in the banking sector in Luxembourg, a Senior Software Developer Java & AWS Cloud. Backend Development Design, develop, and maintain backend services and APIs using Java 21, Spring Boot with either Spring Boot Data, Hibernate or pure JDBC database connectors. Integrate and optimize solutions with Oracle or Aurora PostgreSQL databases. Ensure robust, secure, and scalable code following established architecture and best practices. Cloud & DevOps Build and deploy applications on AWS, utilizing services such as ECS, Lambda, StepFunction, RDS, S3, SQS, SNS and CloudWatch. Develop and manage Infrastructure as Code using Terraform, ensuring reliable and repeatable cloud environments. Participate in CI/CD pipeline setup and maintenance. Python & Cross-Technology Development Handle Python developments as required for automation, data processing, or integration tasks. Collaborate with data engineers to ensure effective data integration, exchange, and transformation between systems. Collaboration & Support Work closely with cross-functional teams to gather requirements, design solutions, and deliver features. Participate in troubleshooting, monitoring, and user support activities as part of the product team. Mentor junior team members and contribute to a culture of continuous improvement. Continuous Improvement Stay up to date with the latest industry trends, technologies, and best practices in software development, cloud, and DevOps. Proactively suggest improvements to enhance system performance, scalability, and maintainability. Our ideal candidates should have University degree in Computer Science, Engineering, or a related discipline. Proven experience in backend development with Java 21, Spring, Spring Boot Data, Hibernate, and pure JDBC. Strong command of relational databases. Proven experience developing and deploying solutions in AWS environments (ECS, Lambda, StepFunction, RDS, S3, SQS, SNS, CloudWatch, etc.). Proficient in Python for scripting and backend tasks. Experience managing infrastructure using Terraform. Solid understanding of RESTful API design, microservices architecture, and secure coding practices. Experience with version control tools such as GitHub or GitLab. Familiarity with CI/CD tools and practices. Experience with version control tools such as GitHub or GitLab Knowledge of containerization (Docker, Kubernetes) is a plus. AWS certification (e.g. Solutions Architect or Developer) is preferred. Experience with Agile methodologies and tools such as Jira. Knowledge of monitoring and alerting solutions. Fluent in English, Portuguese and/or French is a plus Team player with a proactive approach to challenges and continuous improvement. If you are passionate about the banking sector, have good interpersonal skills, and are looking for a new and rewarding opportunity, send us your resume now. Hays plc est l'un des principaux groupes mondiaux de recrutement de professionnels. Hays est l'expert du recrutement de personnes qualifiées, professionnelles et compétentes dans le monde entier. Hays est le leader du marché au Royaume-Uni et en Asie-Pacifique et également l'un des leaders du marché en Europe continentale et en Amérique latine. Hays intervient pour le compte de milliers d’entreprises des secteurs privé et public, sur des postes en CDI, CDD, Travail Temporaire et Contracting. Hays France & Luxembourg compte aujourd’hui plus de 650 salariés répartis au sein de 22 bureaux (Aix-en-Provence, Amiens, Biarritz, Bordeaux, Clermont-Ferrand, Dijon, Grenoble, La Rochelle, Lille, Lyon, Montpellier, Nancy, Nantes, Nice, Paris, Reims, Rennes, Rouen, Strasbourg, Toulouse, Tours et au Luxembourg) couvrant 25 secteurs d’activité.