Scholars have differing opinions on working in a bank that offers both Islamic and conventional banking services. Some argue that it is permissible to work in such a bank as long as the individual's job role is limited to the Islamic banking department. Others advise against it due to the potential intermingling of funds or indirect support to interest-based transactions. It is advisable to consult with a knowledgeable Islamic scholar to determine the most appropriate course of action in your specific circumstances.