Senior Data Engineer (Oracle / PL/SQL) – Data Warehouse

We are seeking an experienced Database Developer with a proven track record in Data Warehouse development and strong Oracle / PL/SQL skills to join our Finance / Data Platform development team.

In this role, you will design, develop, optimize, and maintain complex database programs and data processing logic within a large‑scale enterprise Data Warehouse environment. You will work on both existing (legacy) components and future‑oriented solutions, ensuring stability, performance, and long‑term maintainability.

What we expect from you:

• Design, develop, and maintain complex PL/SQL programs, packages, procedures, and functions in an enterprise Oracle environment
• Develop and optimize data transformation and loading logic for Data Warehouse and analytical use cases
• Analyze, refactor, and stabilize existing database code with a strong focus on maintainability and performance
• Ensure high performance and scalability, especially for large data volumes and batch‑oriented processing
• Actively support production operations by analyzing and resolving database‑related incidents and performance issues
• Collaborate closely with business analysts, ETL developers, and application teams to translate business requirements into robust database solutions
• Contribute to technical design discussions, code reviews, and architecture decisions
• Support the continuous evolution of the Data Warehouse towards modern, future‑proof architectures

We prefer candidates with:

• Strong hands‑on experience database development later in complex enterprise environments using PL/SQL and SQL, preferably 19c and later
• Proven experience in Data Warehouse development, including data modeling and large‑scale data processing. Experience with modern data architectures (Data Lake, Data Mesh and hybrid approaches) is a plus.
• Solid understanding of SQL performance tuning, execution plans, indexing strategies, and partitioning
• Experience working with data governance, data quality checks, and reconciliation logic
• Familiarity with various data processing patterns (ETL,ELT, streaming, etc.) and interaction with upstream/downstream systems (microservices, APIs)
• Experience in maintenance of long‑living systems while contributing to modernization initiatives
• Ability to understand and improve complex, historically grown database landscapes
• Proficiency in Unix/Linux environments, including the ability to create and modify shell scripts. Proficiency in other programming languages (Python, Java, etc.) is an advantage.
• Knowledge and experience with Oracle Exadata systems, as well as familiarity with cloud-based technologies and architectures, are considered a plus.
• Proficiency in English at a minimum B2 level is required; knowledge of German is an advantage.
• Willingness to learn new technologies, including other database systems and cloud environments
• Proactivity in identifying potential challenges and delivering solutions in complex environments.
• Strong commitment to continuous learning and professional development.
• Ability to work in international and agile environment.
• Eligibility to work in the EU.

We offer:

• Home office to make sure you can have the right balance.
• Flexible working hours within agile setup.
• Generous package of 6 weeks of vacation, 6 sick days and up to 30 days of paid sick leave.
• A competitive salary with a very decent annual bonus system.
• Special financial conditions and mortgage discount.
• Prague offices to meet your team at the Charles Square Center, Karlovo náměstí within the reach of metro B line.
• A sophisticated program of further professional training and personal growth.
• Sponsored public transport card, Multisport card, retirement savings contribution, cafeteria system benefits, children summer camps contribution and free coffee.
• Opportunity to travel to our Frankfurt headquarters.
• A friendly, inclusive and open-minded company culture.
• Amazing multicultural colleagues and so much more!