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

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 | +49 (0)89 660393-0 | [email protected]

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.

Requirements

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

• Strong SQL and PostgreSQL experience
• PL/pgSQL, stored procedures, functions, triggers, or comparable database-side programming
• Database design, data modelling, 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

A strong plus would be experience with:

• 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 only about moving data, but also about preserving logic, performance, reliability, and business-critical functionality.

You are 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

Responsibilities

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:

• 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