Senior Data Modeller (Python)

Quick Facts

• Role: Senior Data Modeller (Python)
• Contract: B2B, full-time (40 h/week)
• Work model: Hybrid — 2 days/week in the office
• Rate: up to 150 PLN/h net + VAT
• Locations: Gdańsk, Gdynia, or Warsaw
• Language: Fluent English

Description

You will design and maintain data models supporting credit and financial data processes. The role focuses on defining data mappings across multiple systems, ensuring data quality, consistency, traceability, and auditability, and collaborating with stakeholders and engineering teams on end-to-end solution design.

Responsibilities

• Design and maintain data models for credit and financial data processes
• Analyse business requirements and translate them into scalable technical solutions
• Define and manage data mappings between multiple systems for accurate 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
• Participate 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 requirements into technical solutions
• Fluent English (written and spoken)

Benefits

• Up to 150 PLN/h net + VAT
• Full-time B2B contract (40 h/week)
• Hybrid work with 2 days per week in the office
• Locations: Gdańsk, Gdynia, or Warsaw