Welcome to my new blog!
Hi, I’m Tamas.
I’ve spent the last 8+ years working in data analytics — building dashboards, writing SQL, defining KPIs, and sitting in countless meetings where the number one request was: “How can I export this to Excel?”
What I Actually Do
I’m a Data Analyst, a Data Visualization Expert, and a Business Intelligence Consultant. Sometimes a Business Analyst. Sometimes a junior Data Engineer. In this field, you wear a lot of hats.
In practice, that means writing complex SQL across PostgreSQL, Oracle, and BigQuery; building decision-focused dashboards in Tableau, Power BI, and QlikSense; translating vague business questions into measurable KPIs; and helping stakeholders understand what’s actually possible — and what isn’t — with modern BI tools.
Why This Blog Exists
Most dashboards fail for the same reasons: too many metrics, too many data sources, weak data modeling, and no clear understanding of the business requirement they’re supposed to answer. Data visualization isn’t about fancy charts. It’s a structured, visual way of presenting complex information so that the right person makes the right decision at the right time.
This blog is where I document how I approach that problem — from dashboard design and data storytelling to SQL optimization and KPI frameworks.
What You’ll Find Here
Real Projects. Public datasets with honest breakdowns and clear reasoning — not polished post-mortems, but the actual thinking process.
Design Thinking. Why this chart? Why this layout? Why this filter? Every design decision should answer a specific business question, and I’ll show you mine.
Backend Perspective. Every good dashboard starts in the database. Data modeling and query performance matter more than color palettes, and I’ll cover both.
My Goal
To share what I’ve learned as a data analyst — and yes, occasionally show you how to export the report to Excel.
This blog is a public record of that journey. If that sounds useful, you’re in the right place.
Want to follow along?
New posts on dashboards, SQL, and data strategy — straight from the field.
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