What is the ruling on working at Al-Rajhi Banking Company or Corporation, and is its ruling the same as working at banks?

The questioner should ask the scholars in Saudi Arabia about Al-Rajhi Banking Company. If its dealings are in accordance with the rulings of Sharia, then there is no harm in working for it. However, if it involves Riba (usury/interest), then it is not permissible to work for it, due to the sin that entails. For "the Messenger of Allah (peace and blessings of Allah be upon him) cursed the one who consumes Riba, the one who feeds it, its two witnesses, and its scribe." And because it constitutes cooperation in sin and aggression, which is prohibited in His (Allah's) saying: (And do not cooperate in sin and aggression. And fear Allah; indeed, Allah is severe in penalty).