Senior Data Modeller (Python)
Confirmed on the employer's own hiring board on Oct 13, 2026. First seen by Alion on Oct 12, 2026.
Senior Data Modeller (Python)
About the Offer
We are currently looking for a Senior Data Modeller (Python) to join the team of our client from the banking industry. For this role, Optiveum is the recruitment and contracting party, which means you will sign the cooperation agreement directly with us.
You will design and maintain the data models behind the client's credit and financial data processes, translating business requirements into scalable solutions and making sure data flows accurately between systems.
Key Details:
Rate: up to 140 PLN/h
Work Model: Hybrid, 3 days per week in the office
Location: Gdańsk/Gdynia or Warsaw
Workload: Full-time (40 h/week)
Responsibilities:
Design and maintain data models supporting credit and financial data processes
Analyse business requirements and translate them into scalable technical solutions
Define and manage data mappings between multiple systems to ensure accurate data integration and transformation
Ensure data quality, consistency, traceability and auditability across the solution landscape
Collaborate with business stakeholders, architects and development teams on end-to-end solution design
Prepare and maintain technical documentation and functional specifications
Support process optimisation and automation using AI-assisted tools
Take part in solution implementation, testing and continuous improvement
Requirements:
Extensive experience in data modelling and solution design
Strong SQL skills and hands-on experience with relational databases
Good programming skills in Python
Experience with data integration, transformation and data mapping across multiple systems
Understanding of APIs, system integrations and process modelling
Experience ensuring data quality, consistency and governance standards
Strong analytical and problem-solving skills
Experience working directly with business stakeholders and translating their requirements into technical solutions
Fluent English, both written and spoken
Nice to Have:
Knowledge of Kafka
Experience with Power BI
Familiarity with Java development
Understanding of data warehouse concepts and architecture
Experience using AI tools for documentation, testing, data analysis or development support
Experience in banking, finance or regulatory reporting environments
Knowledge of credit risk, rating or financial statement data domains