The City Attorney shall be the legal adviser of the City officers; shall conduct all actions and proceedings not in charge of special counsel to which the City may be a party or in which it may be interested and shall perform such other legal services as may be required by the Mayor. The City Attorney shall keep a docket and record of all cases and of their proceedings; shall keep copies of all official written communications, and shall deliver such communications to his or her successor in office. The City Attorney shall have power to appoint and remove professional staff legal assistants who shall also be attorneys admitted and qualified to practice in the Supreme Court of the State of Washington.