He was a board member of the Anglo-Egyptian Bank and co-founder of Eaux du Caire, a water distribution company in Cairo.
[5] In the 1850s, Pastré served on the Board of Directors of a steam-tug company active on the Mahmoudiyah Canal for the first time since the contract between Prussian Baron de Pentz and the Pasha came to an end due to a disagreement.
[6] Pastré also served on the Board of Directors of Compagnie Medjidié, a steam shipping company meant to connect all harbours of the Red Sea.
[7][8][9][10] Other board members included his brother Jean-Baptiste Pastré, George Gordon Macpherson, Samuel Laing, Edward Masterman, Alfred Devaux, and Giovanni Sinadino.
[8][9] In Random variables, Nathaniel de Rothschild explains that shortly after British Prime Minister Benjamin Disraeli decided to no longer support Khedivate of Egypt, Pastré failed to "float a loan" in 1873.