Database Architect

You will join a strategic modernization program focused on migrating a large-scale database infrastructure from Sybase ASE to PostgreSQL.

Our client develops and maintains the Clinical Workstation (KWS), the electronic patient record platform used daily by more than 130,000 healthcare professionals across Belgium. You’ll work on a multi-terabyte database environment that forms a critical part of Belgium’s digital healthcare infrastructure.

Your Responsibilities

• Design the target PostgreSQL architecture with a focus on performance, scalability, and reliability.
• Translate and redesign complex Sybase T-SQL patterns into PostgreSQL.
• Optimize database performance through indexing, query tuning, partitioning, and other best practices.
• Develop data validation and quality controls to ensure data integrity throughout the migration.
• Support the migration and transition strategy.
• Act as the PostgreSQL Subject Matter Expert (SME) for the project team.
• Build automation for database administration, monitoring, and operational management.
• Provide support for the existing Sybase environment during the migration phase.

• Extensive experience as a Senior Database Architect or Senior DBA.
• Strong expertise in PostgreSQL architecture, administration, tuning, and optimization.
• Proven experience with large-scale database migration projects and legacy environments.
• Experience converting SQL dialects from Sybase to PostgreSQL.
• Strong performance tuning and query optimization skills.
• Good knowledge of Linux/Unix and scripting (Shell, automation, tuning).
• Experience with database administration and automation.
• Experience with PostgreSQL extensions (e.g. pg_logical, pg_vector) is a plus.
• Java environment experience is considered an asset.
• Experience with Sybase ASE is beneficial but not mandatory-a willingness to learn is equally valued.

Soft Skills

• Excellent analytical and problem-solving abilities.
• Pragmatic, hands-on mindset.
• Strong communication skills.
• Independent worker with a collaborative team spirit.