As a member of our Infrastructure & Database Services Team, you will be responsible for the administration, optimization, high availability, and lifecycle management of enterprise databases across Oracle, PostgreSQL, MS SQL Server, and cloud-managed services (AWS RDS/Aurora). You will work closely with cross-functional teams to ensure performance, reliability, and continuous improvement of our mission‑critical platforms. Responsibilities Administer and maintain Oracle 19C databases, including RAC, Data Guard, patching, upgrades, and performance tuning. Manage PostgreSQL 14-17 environments (standalone, master/slave, multi-master, VPN mesh) both on‑prem and in the cloud (AWS RDS/Aurora). Support MS SQL Server 2008 R2-2019 instances and AlwaysOn high‑availability configurations. Perform cross-platform activities: patching, upgrades, backup/restore, monitoring, and lifecycle management. Collaborate on infrastructure migrations and system architecture evolutions according to standards. Execute scripts, support release policies, and manage database versioning using Liquibase. Develop automation using Bash, Shell, Ansible; maintain CMDB accuracy. Design and maintain monitoring and alerting systems using the ELK stack. Perform performance tuning and provide technical support to application teams. Maintain documentation: knowledge articles, runbooks, and operational guidelines. Apply ITIL best practices and managed processes in ServiceNow (incidents, requests, changes, RFCs). Ensure compliance with IT governance, audit, and security standards. Participate in design reviews, workshops, and knowledge transfer sessions. Profile Bachelor's or Master's degree in Computer Science, IT, or a related field. Minimum 5 years of experience in enterprise database management. Strong analytical and troubleshooting abilities. Ability to manage complex environments and interact with multiple stakeholders. Excellent communication and interpersonal skills. Fluency in English is required; French is a strong asset. Experience working in regulated and multi‑environment IT landscapes. Technical skills: Databases: Oracle (RAC, Data Guard), PostgreSQL, MS SQL Server. Scripting & Automation: SQL, PL/SQL, Bash/Shell, Ansible. Monitoring: ELK stack, performance and alerting tools integration. High Availability / DR: RAC, Data Guard, AlwaysOn. Cloud Platforms: AWS RDS PostgreSQL, AWS Aurora. Service Management: ITIL processes, ServiceNow (INC, RFC, Change). Release & Versioning: Liquibase, GIT (OPS GIT), Subversion. OS Environments: Linux (RHEL), Windows Server. Why cronos group? We'll propose you: An attractive salary package. A good work-life balance environment. The assurance of working with cutting‑edge technologies in an entrepreneurial spirit. Opportunities to grow your skills through tailor‑made training programs. A great workplace within a friendly and collaborative team. If you wish to join a dynamic, human‑sized structure while working with the latest technologies, don't wait any longer—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.