Aufhebung des Jesuitenordens
Back in Poland he was appointed to teach science at Polotsk (1765–68) but he made himself a name rather as architect of public and ecclesiastical buildings, including the construction of new premises for the Jesuit College of Polotsk where Stanislaus Czerniewicz was the rector. After the First Partition of Poland-Lithuania and the second Suppression of the Society of Jesus (1773) he became the right hand man of Vicar General Czerniewicz, negotiating alongside him the survival of the Jesuits with Empress Catherine II of Russia, all the while making sure that the standard of scientific education in Polotsk remained high. To Lenkiewicz, 'quality education' was an absolute necessity if the Society was to survive in the Russian Empire.