Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
Recording transactions with interests and usury is not permissible, because it is a kind of help with falsehood.
Allah forbade that by Saying: {…but do not help one another in sin and transgression….}[5:2].
If your work in this institution entails recording what has a relation with usury and interest, then it is not permissible for you to carry on your work, because this kind of work is considered as a help in sin and enmity, unless your work is limited to recording non-usury and non-interest accounts for the institution.