We are looking for a Senior Database Administrator / Cloud Migration Expert to support a large-scale IT transformation project involving the migration of critical data platforms from an existing cloud environment to a new cloud provider. The mission focuses on the migration of Oracle-based databases to PostgreSQL, within a complex, high-availability and high-security environment handling large volumes of legal and structured data. This position is an on-site contract. As a database and Cloud expert, you will be responsible for Migrating cloud-based Oracle databases (RDS) to PostgreSQL cloud environments Designing and executing database migration strategies, including data transfer, synchronization, and validation Removing Oracle Spatial and adapting database models accordingly Ensuring data integrity, security, performance, and availability throughout and after the migration Defining and maintaining backup, recovery, and disaster recovery procedures Monitoring and optimizing database performance, scalability, and high availability Providing expert-level support for database-related technical issues Collaborating closely with application, infrastructure, and data migration teams Producing and maintaining technical documentation (specifications, procedures, architecture) Contributing to other related IT systems as needed Technical environment: Databases: Oracle, Oracle Spatial, PostgreSQL Cloud platforms & services: AWS (RDS) and equivalent cloud environments Operating systems: Linux Languages & scripting: SQL, Python Containerization & orchestration: Docker, Kubernetes Networking: TCP/IP, load balancers, proxy servers Methodologies: Agile (Scrum, Kanban) Profile Bachelor's degree or equivalent Minimum 7 years of professional IT experience At least 5 years as a Database Administrator, with strong exposure to cloud environments 5+ years of experience with Oracle and PostgreSQL Proven experience in cloud database migration projects Strong background in database design and data modeling Experience working in Agile environments (Scrum or Kanban) Strong expertise in database administration, performance tuning, security, backup & recovery Fluent English required (minimum C1 level) Why cronos group? We'll propose you: An attractive salary package A good work-life balance environment The assurance of working in cutting-edge technologies in an entrepreneurial spirit. The opportunity to develop your skills thanks to tailor-made training courses according to your needs A good job in a friendly place If you wish to integrate a dynamic structure on a human scale while working with the latest technologies, don't wait anymore and join Cronos! Cronos Europa is an IT and digital communications company uniquely dedicated to serving the European institutions, agencies and bodies. From the European Union to EUROCONTROL, we partner with a range of supranational and interinstitutional authorities. Our mission is to arm them with the tools they need to thrive in the digital age. Every aspect of our organisation is designed to complement their capabilities - from our people to our processes and our premises. Our brand combines the expertise of former companies Cronos International and C-Dev, with the creative skills of Inspiiro and the breadth of capabilities of the Cronos Group. Today, Cronos Europa employs over 1,000 people in offices across Belgium, Luxembourg and the Netherlands, serving institutions across diverse framework contracts. Cronos Europa is part of the Cronos Group, one of the largest IT service providers in the Benelux, employing over 8,000 people across 200 competence centres. By leveraging the Group's resources, Cronos Europa can help clients extract value from new and emerging technologies, for everything from Artificial intelligence to Zg Quantum.