Is it permissible to take a job as a recruitment officer for administrative support staff, which includes administrative, financial, and accounting tasks, as well as collecting registration, subscription, and insurance fees, and dealing with banks?

There is no objection to applying for this job, as its duties are generally permissible, and there is no explicit prohibition that would prevent its undertaking. What is stipulated in the employment contract is what matters. If the employee encounters something prohibited, they must avoid it to the best of their ability.