No officer of the city shall have any financial interest, directly or indirectly, (other than the common public interest) in the profits of any contract[,] job, work, or service to be performed for the city; nor shall he stand as surety or give any bail or sign any bail or appearance bond required by the ordinances of the city. No officer of the city shall personally, or as an agent, provide any bond which is subject to approval by the council. Any officer of the city who violates the provisions of this section shall be guilty of misconduct in office.