Michal L.

Kozminski University is a higher education institution offering undergraduate and postgraduate programs.

• Delivered postgraduate lectures focused on Tableau and Alteryx.
• Conducted practical workshops covering business intelligence reporting and ETL workflows.
• Prepared course materials and demonstrations using Tableau and Alteryx.

QUAD engaged the developer to deliver Tableau-based reporting and analytics solutions.

• Designed and developed reports using Tableau Desktop.
• Prepared and structured data to support reporting and business analysis.
• Integrated data from Microsoft SQL Server, Excel, and Smartsheet.
• Developed and maintained technical documentation covering reporting processes, data sources, and query logic.
• Gathered reporting requirements in collaboration with business stakeholders.
• Performed data quality testing and validation before delivering reports.

Billennium is an IT services and consulting company providing software development, data, cloud, and managed technology services for business clients.

• Provided technical support and guidance to the BI team.
• Conducted technical interviews for engineering candidates.
• Participated in pre-sales activities by supporting solution design and technical discussions.
• Coordinated technical activities across BI delivery initiatives.
• Designed and developed business intelligence reports using Tableau and other BI tools based on database and flat-file data sources.
• Created, improved, and monitored ETL workflows using Talend, Alteryx, and Tableau Prep.
• Developed automation scripts using Python, Visual Basic, and Google Apps Script to refresh reports and prepare reporting datasets.
• Managed Tableau Cloud and Tableau Server environments, including projects, user permissions, security groups, and Row-Level Security.
• Gathered business requirements in collaboration with business stakeholders and translated them into reporting solutions.
• Performed data quality testing and validation before report delivery.
• Contributed to projects across PMO, Pricing, Lifecycle, and Psychological Safety business areas.

E-Studio Software develops software applications for business clients.

• Developed and maintained PHP applications.
• Created technical documentation for implemented functionality.
• Tested developed software before delivery.
• Supported the maintenance of existing applications.