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!

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

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