Python Developer
Aleja Pokoju 18, Kraków
Ready4S
About the Project
We are looking for a Data Engineer to join the team responsible for the core data layer of our central system. At the foundation of our work lies a PostgreSQL database, which powers the organization’s main application. Our goal is to ensure that data is consistent, reliable, and efficiently processed — delivering both high performance and high-quality information. This role gives you the opportunity to work directly with the data that forms the heart of the organization and to contribute to shaping a critical part of the system’s architecture.
Responsibilities
Design, write, and optimize SQL queries for efficient data retrieval and storage
Develop Python-based data processing components and user-facing outputs
Ensure data consistency, accessibility, and performance across the system
Write and maintain automated tests in Python
Collaborate with other engineers to continuously improve system quality and reliability
Requirements
Strong knowledge of SQL and practical experience working with relational databases and PostgreSQL knowledge
Proficiency in Python for data processing and automation
Methodical and analytical approach — ability to fully understand problems before drawing conclusions
Motivation to grow and continuously learn
Ability to work effectively as part of a team, bringing positive energy and collaboration
Nice to Have
Experience with performance tuning and large-scale datasets
Familiarity with database design and data modeling principles
Knowledge of testing frameworks in Python
Why Join This Project?
Opportunity to work on the foundational data layer of a key organizational system
Direct impact on the quality and performance of data used across the company
No legacy maintenance — focus on clean, efficient, and scalable solutions
Collaborative and growth-oriented environment