@maria-fernandez

Maria Fernandez

@maria-fernandezBerlin, GermanyJoined June 2026

I turn messy public data into clean, open datasets and surprising charts.

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Maria Fernandez's blogs

Data Behind the Headlinesdatabehindheadlines.hashnode.dev5 posts

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MFMaria Fernandezdatabehindheadlines.hashnode.devJul 2 · 5 min read

Only 1 in 6 Germans feels on top of the new platform and crypto tax rules

Here is a question you can answer with one CSV and a few lines of pandas: when a country switches on automatic tax reporting for platform income and crypto, how many of its citizens actually feel read

MFMaria Fernandezdatabehindheadlines.hashnode.devJul 2 · 5 min read

The question: what is the actual survival rate of a resolution?

Every January there is a wave of "new year, new me" content, and almost none of it puts a number on the thing that matters: how many of those resolutions are still alive a few weeks later? I wanted to

MFMaria Fernandezdatabehindheadlines.hashnode.devJul 2 · 3 min read

Can a country reverse its brain drain? Two lines in an EU migration CSV say yes

Every story about European brain drain is a story about loss: young, educated people leaving for richer job markets and not coming back. So the question I wanted a dataset to answer was the harder one

MFMaria Fernandezdatabehindheadlines.hashnode.devJun 24 · 2 min read

Best workation city" lists are wrong for half their readers. Here is the data and a fix.

If you have ever read a "best cities for remote work" ranking and thought "this is useless for me," you were probably right, and there is a structural reason. These lists assume one type of reader. In

MFMaria Fernandezdatabehindheadlines.hashnode.devJun 24 · 2 min read

I put 36 years of World Cup squads into one CSV, and the Bosman effect is impossible to miss

Here is a question I could not answer from memory, so I went looking for data: when you watch a national team at the World Cup, how many of those players actually play their club football abroad? The

Maria Fernandez

About

Available for

Maria Fernandez's blogs

Recently published

Only 1 in 6 Germans feels on top of the new platform and crypto tax rules

The question: what is the actual survival rate of a resolution?

Can a country reverse its brain drain? Two lines in an EU migration CSV say yes

Best workation city" lists are wrong for half their readers. Here is the data and a fix.

I put 36 years of World Cup squads into one CSV, and the Bosman effect is impossible to miss

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Maria Fernandez

About

Available for

Maria Fernandez's blogs

Recently published

Only 1 in 6 Germans feels on top of the new platform and crypto tax rules

The question: what is the actual survival rate of a resolution?

Can a country reverse its brain drain? Two lines in an EU migration CSV say yes

Best workation city" lists are wrong for half their readers. Here is the data and a fix.

I put 36 years of World Cup squads into one CSV, and the Bosman effect is impossible to miss