Category: Jobs

These are your responsibilities

· Support, maintenance, and further development of a complex Oracle-based application and system environment.

· Direct technical customer support and solution-oriented advice.

· Contribute to software and system architecture as well as application development.

· Incident and problem analysis, including solution development, implementation, testing, and rollout.

· Estimating effort, planning work packages, and coordinating with the project team.

· Preparing technical documentation.

Your Professional Qualifications

· Very strong knowledge of Oracle Database, Oracle SQL, and PL/SQL

· Experience in Oracle administration

· Hands-on experience with Oracle Forms and Oracle WebLogic Server (will be gradually modernized in the coming years)

· Strong knowledge of Linux, ideally Red Hat Enterprise Linux and/or Oracle Linux

· Advanced knowledge of Java; experience with Spring (Boot), Hibernate, and Vaadin is a plus

· Proficiency in using Toad for Oracle, Jira, and Confluence

· Very good German and good English; Italian is a plus

What else is important to us

· An independent, organized, and reliable work style

· Analytical thinking and a pragmatic, solution-oriented approach

· Professional, clear, and respectful communication

· Interest in system development and technological modernization

· Team spirit and a passion for international collaboration

Important Note

Due to the sensitive nature of our projects, a Level 2 security clearance is required for this position. Providing your nationality can help us verify the basic eligibility requirements early on and streamline the application process.

We offer

· Competitive salary and potential additional bonus payments

· Free professional development and flexible learning hours

· Long-term prospects and opportunities for growth

· Relocation support when moving for the position

· Discounts at gyms and other sports facilities

· Playing soccer together every two weeks—on a voluntary basis, of course

Sounds interesting?

Then apply easily—no cover letter required. Please send us your resume, your earliest possible start date, your salary expectations, and any relevant certificates.

What happens next?

Initial remote consultation → Follow-up in-person consultation → Contract offer

Please, no applications from staffing or recruitment agencies.

Contact: Doris Böhner · jobs@datawh.de · +49 (0)89 660393-0

About us

Data-Warehouse GmbH is an owner-managed IT systems provider with over 35 years of experience in secure and intelligent IT solutions “Made in Germany.”

We combine technological excellence with many years of project experience in cybersecurity, information management, software development, and process optimization—including in demanding high-security environments.

We support people who are willing to take on responsibility, expand their knowledge, and work with us to develop innovative IT solutions—in an environment where trust, personal responsibility, and a sincere handshake matter.

Your Tasks:

• SAP Basis System Administration:
  General SAP Basis Administration, Password Management, SAP Support Packages installations, client copy, system refresh, etc.
• Database Administration
• Administration LINUX / UNIX
• Working with ticket system for incidents, problems, change management and configuration management
• Basic tasks with Netbackup and VMware (not full administration and setup)

Requirements/Knowledge/Experience:

• Some experience with SAP database services would be a benefit: Oracle database administration and/or HANA administration
• Experience with ticket systems would be a benefit
• Any knowledge/competence in Red Hat Administration, Netbackup, VMware would be a benefit
• General skills such as writing documentations
• Good English skills (written and spoken), basic knowledge of German would be desirable
• Security check (Ü2) already available or willing to have it done
• High team spirit, reliability, punctuality
• Willingness to learn to acquire new skills
• Willingness to work in a rotation system and to work outside working hours (usually one Saturday per month)

Contact HR: Doris Böhner, d.boehner@dwh.gmbh

Tasks:

• Deploy, configure, and maintain Rancher-based container platform in an air-gapped environment. 
• Manage Kubernetes clusters, nodes, and workloads within the Rancher ecosystem. 
• Administer Unix-based operating systems, including performance tuning and troubleshooting. 
• Implement security hardening practices for containerized environments and Unix servers. 
• Automate system and container operations using scripting languages such as Ansible. 
• Ensure high availability, fault tolerance, and disaster recovery for containerized workloads. 
• Design and implement monitoring, logging, and alerting solutions for both Rancher and Unix infrastructure. 
• Collaborate with DevOps and development teams to support CI/CD pipelines and deployment workflows. 
• Maintain compliance with security policies, including patch management and vulnerability remediation. 
• Document architecture, procedures, and operational guidelines for system administration. 

Requirements/Knowledge/Experience:

• Proven experience in Rancher container orchestration and Kubernetes administration. 
• Strong expertise in Unix/Linux system administration (RHEL8, RHEL9, or similar). 
• Knowledge of air-gapped deployments and best practices for secure environments. 
• Proficiency in infrastructure automation using Ansible, Terraform, or similar tools. 
• Hands-on experience with monitoring tools such as Prometheus, Grafana, or Loki. 
• Strong troubleshooting and performance tuning skills for both containers and Unix systems. 
• Familiarity with container security tools and practices. 
• Experience working with containerized databases and persistent storage solutions.
• Experience with version control and CI/CD pipelines (Git, Jenkins, ArgoCD, etc.). 
• Certifications such as CKA (Certified Kubernetes Administrator), RHCE (Red Hat Certified Engineer), or similar is an advantage.
• Understanding of SIEM tools and security event monitoring focused on containers is an advantage. 
• Working with ticket system for incidents, problems, change management and configuration management.

• Strong background in IT (working in IT).
• IT related Bachelor or Master's degree is a plus.
• Any knowledge of ITIL would be useful.
• Knowledge of DNS and load balancers.
• Good Unix/Linux knowledge.
• Knowledge of BMC Helix would be nice to have.
• VMWare knowledge would be nice to have.
• The candidate should also be able to speak and write in English.
• Security check (Ü2) available or willing to go through the process to acquire it.

• Willingness to learn and acquire new skills (including acquiring relevant certifications).

Willingness to work in a rotation system (to cover the service hours) and to work outside working hours (usually one Saturday per month)

Your Soft Skills:

High team spirit

Reliability, punctuality

Our offer:

We offer a safe, trustful and long-term working environment with very good working conditions in an exciting working environment

Company fitness and other company events

Clear and open internal communications and fast decisions

Cultural and international mixture of leading experts in their areas

Highly innovative environment with a personal development plan

We look forward to welcoming you to our team and shaping the future.

Contact person: Doris Böhner, d.boehner@dwh.gmbH, Phone 089 660393-17

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

Your Tech Stack & Experience

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.

What We Offer

• 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

Hiring Process

Initial remote interview > On-site interview in Munich | Job offer

We do not accept applications from staffing or recruitment agencies.

Technical skills:

• Good knowledge of Java
• Good knowledge of JavaScript
• experience in software development, preferably web applications
• Good knowledge of PL/SQL
• Familiarity with Oracle technologies (e.g., Oracle JET, Oracle DB) is a plus.
• Understanding of WebLogic is appreciated

Functional skills:

• Ability to understand and analyze requirements
• Good written and spoken English

Soft skills:

• Proactive and motivated attitude
• Strong willingness to learn and grow
• Team spirit and good communication skills
• Problem-solving attitude and sense of responsibility

Tasks:

• Database Administration (Postgres):

Installation and upgrades, Monitoring, Troubleshooting, General database administration (space management, user management, log file checking), Patching, Backup and recovery, Performance tuning, Service request management, Documentation.

• LINUX / UNIX Tasks, Usage of LINUX / UNIX to perform the other tasks in this role.
• Patching and management of Java based applications to provided instructions.
• Management and troubleshooting of the Java based applications using provided instructions.
• Scheduling of application tasks using a provided scheduler tool.
• Working with ticket system for incidents, problems, change management and configuration management

Requirements/Knowledge/Experience:

• Strong background working in IT environments
• Any knowledge of ITIL would be useful.
• Proven experience as a PostgreSQL Database Administrator.
• Excellent Unix/Linux knowledge.
• Strong knowledge of database design, performance tuning, and optimization.
• Experience with backup, recovery, and disaster recovery planning.
• Excellent problem-solving and analytical skills.
• General skills such as writing of documentation.
• IT related Bachelor or Master's degree is a plus
• The candidate should also be able to speak and write in English.
• Security check (Ü2) available or willing to go through the process to acquire it.
• Willingness to learn and acquire new skills (including acquiring relevant certifications)
•  

Willingness to work in a rotation system (to cover the service hours) and to work outside working hours (usually one Saturday per month)

Contact HR: Doris Böhner, d.boehner@dwh.gmbh