PostgreSQL Developer / Database Migration Specialist (f/m/d) - Security

Salary: 65.000 - 90.000 € per year

• You should bring solid experience in database development and migration projects, especially in several of the following areas:
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• Strong SQL and PostgreSQL experience
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• PL/pgSQL, stored procedures, functions, triggers, or comparable database-side programming
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• Database design, data modelling, schema development, and performance tuning
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• Data migration, ETL, transformation logic, and data validation
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• Linux-based environments and Git or comparable version control systems
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• Experience with reporting solutions, preferably based on open-source tools
• A strong plus would be experience with:
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• SAP HANA, SAP HANA SQL, SQLScript, calculation views, or generated SAP HANA views
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• Migration from SAP HANA, Oracle, SQL Server, DB2, or other enterprise databases to PostgreSQL
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• Proxmox or virtualized infrastructure environments
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• 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 only about moving data, but also about preserving logic, performance, reliability, and business-critical functionality.
• You are a good fit if you:
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• Have a strong database engineering mindset
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• Can analyze complex source systems and translate them into robust PostgreSQL solutions
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• Work carefully, independently, and with a strong sense of responsibility
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• Communicate clearly with technical stakeholders
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• Are willing to work on-site due to project security requirements
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• Are eligible to work in a high-security project environment

• Shape the future of secure IT systems. 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 truly matter.
• You will support a major database migration project from SAP HANA to PostgreSQL in a high-security IT environment.
• Your main responsibilities will include:
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• Analyze existing SAP HANA database structures, views, procedures, and SQLScript logic
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• Design and implement PostgreSQL schemas, tables, views, functions, and stored procedures
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• Support the migration of database logic from SAP HANA / SQLScript to PostgreSQL / PL/pgSQL
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• Develop and test migration scripts, data transformation logic, and validation routines
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• Optimize SQL queries, indexes, and PostgreSQL database performance
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• Document technical decisions and migration steps clearly and reliably

• ETL
• Git
• Support
• Linux
• Oracle
• PostgreSQL
• SAP
• SQL
• Security
• 3D

More:

What we offer:
- Competitive salary
- Permanent employment in a stable, growing company
- Work on high-impact security projects
- Individual training and development, including German courses
- Career growth opportunities
- Relocation support
- Sports & fitness benefits, including company football every two weeks
- A professional environment where quality, reliability, and trust matter

Hiring process:
- Initial remote interview > On-site interview in Munich > Offer

How to apply:
- Apply easily - no cover letter required
- Please include: CV, earliest possible start date, salary expectations, relevant certificates and security clearance documentation
- No applications from staffing or recruitment companies accepted
- Contact: Doris Böhner (0)-0

About us:
Data-Warehouse GmbH is an owner-managed German IT company with 35+ years of experience in cybersecurity, information management, software development, and process optimization. We deliver solutions for high-security environments and combine technological excellence with long-term project expertise.
We support people who take on responsibility, expand their knowledge, and want to develop innovative IT solutions together with us - in an environment where trust, personal responsibility, and a genuine handshake count.

last updated 26 week of 2026