108. He got a promotion at work via bribery. Is his salary haraam?
There is no doubt that paying a bribe in order to get a job is haram both for the one who pays the bribe and the one who accepts it, and for the one who mediates between them. No exception is made except in cases where the bribe is paid to remove injustice or to attain rights which can only be attained through bribery. In that case it is permissible for the one who gives it but it is haram for the one who takes it.
So long as the promotion is based on a test for employees, bribery is haram in this case, because you were no better than anyone else and you have no particular right which you had to pay a bribe to attain.
There is a warning concerning bribery which should scare any wise person away from engaging in it. It was narrated that Abu Hurayrah (may Allaah be pleased with him) said: The Messenger of Allaah (peace and blessings of Allaah be upon him) cursed the one who offers a bribe and the one who takes it.
(Abu Dawoud, 3580; al-Tirmidhi, 13360 and Ibn Majaah, 2313).
If you however repent to Allah, seek forgiveness and give some money in charity, then you may remain in that post with hopes that Allah will accept your repentance, and so long as you are also qualified to work in it, because appointing someone who is not qualified is a betrayal of trust, the harmful effects of which affect the society.
And Allah knows best.
19 Jumada Ula, 1442 AH.