Senior Data & Reporting Engineer (Hybrid, Kraków)

ALTEN; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Medicover medical care

Medicover dental care

Medicover Benefits platform

Medicover Sport card

Referral Program

Layette for a newborn employee’s child

Group life insurance

Pension scheme

Job summary

ALTEN Polska seeks a seasoned data professional to drive end-to-end data projects in Kraków, delivering robust data models, KPI-driven insights, and scalable reporting solutions. You will work with SQL, Python, and Google Cloud Platform to integrate diverse data sources while ensuring data quality and governance.

This role blends analytics with engineering and requires strong stakeholder collaboration. Hybrid work in Kraków, ongoing learning opportunities, and a clear career path within a

Qualifications

• 5+ years of experience in a data-focused role such as Data Analyst, Data Engineer, SQL Developer, Data Architect, or Data Modeller.
• Expert-level SQL skills with strong knowledge of relational database design, optimization, query tuning, indexing, and data modelling.
• Hands-on experience with data analysis, data transformation, and data integration processes.
• Strong understanding of ETL processes, data warehousing concepts, and data management best practices.
• Experience building business reports, dashboards, and analytical solutions for operational or strategic decision-making.
• Proficiency in Python for data processing, automation, and analytics is highly desirable.
• Experience working with cloud-based data platforms, particularly Google Cloud Platform (GCP), including BigQuery and reporting tools.
• Ability to work with complex datasets and translate business requirements into scalable technical solutions.
• Strong analytical and problem-solving skills with a proactive, solution-oriented mindset.
• Experience managing priorities, risks, and stakeholder expectations in a dynamic environment.
• Excellent communication and stakeholder management skills.
• Fluent English, both written and spoken.
• Self-driven, collaborative, and focused on delivering high-quality results with a continuous improvement mindset.

Responsibilities

• Deliver end-to-end data projects, including data discovery, cleansing, transformation, validation, aggregation, and KPI development.
• Design and maintain scalable data models based on multiple data sources, ensuring alignment with business requirements and data standards.
• Perform data matching, linking, and reconciliation across complex datasets.
• Develop and optimize reporting solutions, dashboards, and analytical outputs using SQL, Python, and cloud-based data platforms.
• Ensure secure and reliable data movement between source and target systems.
• Collaborate with business stakeholders to gather requirements, understand process logic, and translate business needs into technical solutions.
• Analyze large datasets to identify insights, trends, and opportunities for process improvement.
• Proactively identify risks, dependencies, and blockers, and drive mitigation actions.
• Create and maintain clear documentation, including process maps, solution designs, and technical specifications.
• Lead assigned initiatives, facilitate stakeholder discussions, and monitor project delivery progress.
• Support continuous improvement initiatives focused on data quality, efficiency, and reporting capabilities.

Skills

SQL

Python

Data analysis

Data modelling

ETL

Tools

Google Cloud Platform

BigQuery

Job description

ALTEN Polska seeks a seasoned data professional to drive end-to-end data projects in Kraków, delivering robust data models, KPI-driven insights, and scalable reporting solutions. You will work with SQL, Python, and Google Cloud Platform to integrate diverse data sources while ensuring data quality and governance.

This role blends analytics with engineering and requires strong stakeholder collaboration. Hybrid work in Kraków, ongoing learning opportunities, and a clear career path within a