Answer
(Fatwa: 1600D/203K=1430)
You are allowed to provide the services if you do not tell lie and deceive and the commission amount is already agreed upon. According to one opinion, it is allowable to provide the service for an alcohol beverage company too and the income will be lawful, but according to another opinion, it is better to avoid. However, in any case the income will not be termed haram, but it will not be perfectly pure too.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband