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

Data-Warehouse GmbH; Ottobrunn; Vor Ort; EUR 65.000 - 90.000; Vollzeit

Benefits dieser Stelle

Relocation support

German language courses

Sports & fitness benefits

Permanent employment

Zusammenfassung

Data-Warehouse GmbH sucht mehrere erfahrene PostgreSQL-Entwickler / Datenbank-Migrationsspezialisten (m/w/d) zur Unterstützung eines Großprojekts in Ottobrunn. Die Position ist unbefristet und vor Ort in Ottobrunn/München mit gelegentlicher Vor-Ort-Betreuung bei Kunden.

Zu den Aufgaben gehören Analyse, Design und Migration von SAP HANA zu PostgreSQL, Entwicklung von Schemas, Funktionen und Migration Skripten sowie Optimierung der Performance.

Qualifikationen

• Fundierte SQL- und PostgreSQL-Erfahrung
• PL/pgSQL, Stored Procedures, Funktionen, Triggern
• Datenmodellierung, Schema-Entwicklung, Performance-Tuning
• Datenmigration, ETL, Transformationslogik, Validierung
• Linux-basierte Umgebung und Versionskontrollsysteme (Git)
• Erfahrung mit Open-Source-Reporting-Tools ist wünschenswert

Aufgaben

• Analysieren bestehender SAP HANA-Datenstrukturen, Views und SQLScript-Logik
• Entwerfen und Implementieren von PostgreSQL-Schemas, Tabellen, Views, Funktionen und Stored Procedures
• Unterstützung der Migration von Logik von SAP HANA zu PostgreSQL
• Entwicklung und Prüfung von Migrationsskripten, Transformationslogik und Validierung
• Optimierung von SQL-Abfragen, Indizes und PostgreSQL-Performance
• Dokumentation technischer Entscheidungen und Migrationsschritte

Kenntnisse

SQL

PostgreSQL

PL/pgSQL

Data migration

ETL

Database design

Linux

Git

Reporting

Tools

Git

Jobbeschreibung

Arbeitsort

Ottobrunn

Beginn

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.

• Immediate start
• Permanent full‑time position
• Location: Ottobrunn / Munich, Germany
  some days per month at customers‘ site in the south of Bavaria
• On‑site position
• Salary range: €65,000 – €90,000 gross per year, depending on experience, security clearance status, and technical fit.

Your Role

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 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

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.

What We Offer

• Permanent employment in a stable, growing company
• Work on high‑impact security projects
• Individual training and development, including German courses
• Relocation support
• Sports & fitness benefits, including company football every two weeks
• A professional environment where quality, reliability, and trust matter

Hiring Process

No applications from staffing or recruitment companies accepted.