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Introduction
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.
We are looking for multiple experienced PostgreSQL Developers / Database Migration Specialists (f/m/d) to support a major migration project from SAP HANA to PostgreSQL.
Tasks
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
Profile
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 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 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
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 Important notice!
Due to the sensitive nature of the project, candidates must have citizenship of an EU or NATO member state and must hold a German extended security clearance Ü2.
Further, due to the sensitive nature of the projects and the compliance requirements of the stakeholders, working from home is not an option.
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
Additional Information
Some days per month at customers‘ site in the south of Bavaria
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 |
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.
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