David
Pešava

Business Intelligence Developer

Microsoft Certified · PL-300 Power BI Data Analyst

I architect modern data platforms and build dashboards that turn complex datasets into strategic clarity. From warehouse design to executive reporting — data becomes decisions.

150+ Dashboards
30+ Companies
10+ Years

The tools behind the insights

Full-stack BI — from ingestion and transformation to visualization and storytelling.

Power BIVisualization
TableauVisualization
Microsoft FabricPlatform
DatabricksPlatform
SnowflakePlatform
dbtEngineering
KeboolaEngineering
PythonCode
PandasCode
ExcelReporting

End-to-end data intelligence

Every engagement is tailored. Here's what I typically help with.

01

Dashboard Development

Interactive dashboards that transform complex datasets into clear, actionable visuals. From C-suite overviews to operational deep-dives.

Power BI · Tableau · Excel
02

Data Architecture

Modern warehouses, lakehouses, and ETL/ELT pipelines. Clean, governed foundations that scale with your business and never break at 3 AM.

Fabric · Databricks · Snowflake
03

Analytics & Insights

From raw numbers to strategic intelligence. KPI frameworks, ad-hoc analysis, and data storytelling that drives confident decisions.

Python · Pandas · dbt
04

Consulting & Training

Building internal BI capabilities. Tool selection, architecture reviews, workshops, and hands-on mentoring to make teams data-fluent.

Strategy · Workshops · Mentoring

Thought leadership

Articles published in System Online — a leading Czech IT & business magazine.

systemonline.cz

Data Quality Management: How Flawed Data Undermine Corporate Strategy

In a world of digitalization and automation, companies rely on data more than ever. This piece explores how poor data quality silently erodes business decisions — and what a robust quality framework looks like in practice.

Read article
systemonline.cz

Data Governance Has an Irreplaceable Role in Quality, Integrity & Security

Data is the new oil of the 21st century. This article makes the case for why Data Governance is not optional — covering its core pillars, real-world challenges, and best practices for implementation.

Read article

Companies I've delivered to

Let's turn your data into decisions.