Category:Marek Stelmasik

**Marek Stelmasik**
	Polish programmer, Wikipedian
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Date of birth	23 April 1965
Country of citizenship	Poland;
Educated at	Warsaw University of Technology;
Occupation	programmer; Wikipedian;
Employer	IBM;
Member of	Wikimedia Poland;
Position held	treasurer (Wikimedia Poland, 2012–2020); board member (Wikimedia Poland, 2010–2012);
Authority file
	Q110659290;
	Reasonator; Scholia; Wikidocumentaries; PetScan; statistics; WikiMap; Locator tool; KML file; Search depicted;

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