Ireneusz Fafara is take over at the head of Poland’s Orlen oil refiner and fuel retailer with immediate effect, replacing Daniel Obajtek, who was pushed out at the start of the year. The company, in which the Polish state has a large stake, made the announcement late on Wednesday. Obajtek was seen as owing his appointment to Jarosław Kaczyński, the head of the national conservative PiS party which ruled Poland until the autumn of last year. Fafara headed Orlen’s Lithuanian subsidiary between 2010 and 2018. More recently he has served as head of the 4Cell Therapies medical company. Orlen has in…