Senior Data Solutions Engineer (SQL & Python)

Quick Facts

• Role: Senior Data Solutions Engineer (SQL & Python)

• Domain: Banking (credit and financial data)

• Work style: Hybrid (3 days/week from office in Warsaw or Gdańsk)

• Contract: B2B, 165 PLN/hour

Description

Design and maintain data models for credit and financial processes in a banking environment. Translate business requirements into scalable technical solutions, define data mappings across systems, and ensure data quality, consistency, traceability, and auditability. Support process optimization and automation using AI-assisted tools.

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 enable 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 optimization and automation using AI-assisted tools

• Participate in solution implementation, testing, and continuous improvement activities

Requirements

• Extensive experience in data modeling 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 modeling

• Experience ensuring data quality, consistency, and governance standards

• Strong analytical and problem-solving skills

• Experience working directly with business stakeholders and translating business requirements into technical solutions

• Fluent English (written and spoken)

Benefits

• Hybrid work model (3 days/week from the Warsaw or Gdańsk office)

• B2B rate: 165 PLN/hour

• Opportunity to work on end-to-end banking data solutions with AI-assisted optimization