Sebastian Stecko (born 1980) is currently an Associated Professor at the Institute of Organic Chemistry of the Polish Academy of Sciences in Warsaw (Poland) where he and his group specializes in synthetic organic chemistry. 

          He graduate at the Silesian University of Technology (Gliwice, Poland) in 2004, where he obtained a M. Sc. degree in a chemical technology and did the research with Prof. Jerzy Suwiński. He obtained his Ph.D. degree in organic chemistry from the Institute of Organic Chemistry of the Polish Academy of Sciences (IOC PAS) in Warsaw in 2008. There he was working with Prof. Marek Chmielewski on studies on stereochemistry of 1,3-dipolar cycloaddition reactions of non-racemic cyclic nitrones and synthesis of bioactive compounds such as iminosugars and β-lactams. During the Ph.D. studies he had two short-term visits at the research groups abroad. In spring 2007, he visitetd for 3 months the Center de Recherches sur les Macromolecules Vegetales, CNRS (prof. Serge Perez group) and the Departament de Chimie Moleculaire, Joseph Fourier University, Grenoble (France) (prof. Anne Milet group) where he was trained in a computational chemistry. In autumn 2007, he visited group of Prof. Jean-Paul Quintard at the Laboratoire de Synthèse Organique, UMR 6513 du CNRS, Faculté des Sciences et des Techniques, Nantes University (France) where he was working on an application of organotin compounds in synthesis of aza-heterocycles. 

          After obtaining a Ph.D. degree he was a researcher at the Institute of Organic Chemistry working on an application of Kinugasa reaction in synthesis of pharmacologically active β-lactams. Then he spent one year (2010) at the Berlin Technical University as a postdoctoral scholar (Alexander von Humboldt Fellowship), working under guidance of Prof. Siegfried Blechert on an enatioselective metathesis reactions. In 2011 he began his independent career at the IOC PAS, with research interests that include stereocontrolled organic synthesis, total synthesis, synthesis of biologically active compounds, an application of pericyclic reactions such as dipolar cycloaddtions and sigmatropic rearrangements in target oriented synthesis, computational chemistry and circular dichroism spectroscopy.

          In 2016 he obtained a D. Sc. degree (habilitation) on the synthesis of unnatural amino acids via the allyl cyanate-to-isocyanate rearrangement.  In 2019, he recieved an associated professor position at the IOC PAS.