PostgreSQL Developer / Database Migration Specialist - Security

You will support a major database migration project from SAP HANA to PostgreSQL in a high-security IT environment.

Your main responsibilities will include:

• Analyze existing SAP HANA database structures, views, procedures, and SQLScript logic
• Design and implement PostgreSQL schemas, tables, views, functions, and stored procedures
• Support the migration of database logic from SAP HANA / SQLScript to PostgreSQL / PL/pgSQL
• Develop and test migration scripts, data transformation logic, and validation routines
• Optimize SQL queries, indexes, and PostgreSQL database performance
• Document technical decisions and migration steps clearly and reliably

You should have solid experience in database development and migration projects, particularly in several of the following areas:

• Extensive experience with SQL and PostgreSQL
• PL/pgSQL, stored procedures, functions, triggers, or similar database-side programming
• Database design, data modeling, schema development, and performance tuning
• Data migration, ETL, transformation logic, and data validation
• Linux-based environments and Git or comparable version control systems
• Experience with reporting solutions, preferably based on open-source tools

Experience with the following would be a strong plus:

• SAP HANA, SAP HANA SQL, SQLScript, calculation views, or generated SAP HANA views
• Migration from SAP HANA, Oracle, SQL Server, DB2, or other enterprise databases to PostgreSQL
• Proxmox or virtualized infrastructure environments
• High-security, regulated, public-sector, aerospace, defense, or mission-critical IT environments

What We Are Looking For

We are looking for experienced database professionals who understand that migration is not just about moving data, but also about preserving logic, performance, reliability, and business-critical functionality.

You're a good fit if you:

• Have a strong database engineering mindset
• Can analyze complex source systems and translate them into robust PostgreSQL solutions
• Work carefully, independently, and with a strong sense of responsibility
• Communicate clearly with technical stakeholders
• Are willing to work on-site due to project security requirements
• Are eligible to work in a high-security project environment

Important notice!

Due to the sensitive nature of the project, candidates must be citizens of an EU or NATO member state and must hold a German extended security clearance (Ü2).

Furthermore, due to the sensitive nature of the projects and the compliance requirements of the stakeholders, working from home is not an option.

• Competitive salary
• Permanent employment at a stable, growing company
• Work on high-impact security projects
• Individual training and development, including German language courses
• Career growth opportunities
• Relocation Support
• Sports and fitness benefits, including a company soccer game every two weeks
• A professional environment where quality, reliability, and trust are important

Join Data-Warehouse GmbH and work on high-security, mission-critical projects at the forefront of modern technology. As part of an experienced international team, you will contribute to systems where security, reliability, data quality, and technical precision are of the utmost importance.