Answer:
(Fatwa: 1995/1608/B=1431)
It is not lawful to write the schemes in which the dealing of interest is made. The holy Prophet Muhammad (صلى الله عليه وسلم) has cursed those who record interest-based accounts. It is a haram job, and the salary of haram job is haram.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
