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Mateusz Ropiak

BI Developer & Data Engineer

I build dashboards people actually open, set up the pipelines that feed them, and automate the work around them.

Power BIData EngineeringAIAutomationTraining
My Services

Data and Analytics

Power BI dashboards, data pipelines, AI-powered automations - I help companies make better use of their data.

Dashboards
Reports that answer your questions at a glance
  • Dashboards showing your key business numbers in one place
  • Connections to your databases, Excel files, and other systems
  • Complex calculations that would be a nightmare in Excel
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Training
Teach your team to build their own reports
  • Beginner level: How to get data in, make basic charts, share reports
  • Intermediate level: DAX formulas, Power Query, data modeling
  • Advanced level: Performance tuning, best practices, complex scenarios
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Consulting
Fix slow reports and messy data models
  • Full health check of your Power BI setup
  • Data model cleanup and optimization
  • DAX formula rewriting for better performance
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Data Engineering
Get your data clean, connected, and ready
  • Azure Data Factory pipelines — orchestration, scheduling, and monitoring of your entire data flow
  • Databricks & Spark transformations — processing large datasets efficiently with Delta Lake
  • dbt (data build tool) models — version-controlled, tested, documented SQL transformations
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Automation
Stop doing the same thing over and over
  • Custom n8n workflows — self-hosted, flexible, with AI nodes for LLM integration and custom logic
  • LLM-powered automations — integrate Claude, GPT, or other models for text analysis, generation, and decision-making
  • Intelligent document processing — AI extraction from invoices, contracts, emails, and forms with validation
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