Charlotte Zeepvat's book From Cradle to Crown discusses a bit some of the salaries and stipends received by various nurses, governess, etc...I don't know if they're considered servants they way footmen are but they were paid employees.
Jane Lyon, nurse to the future Nicholas I, in 1803 received a gratuity when she left of 2,000 silver roubles and an annual pension of 600. Much loved, she lived out her widowhood in a suite of rooms at the Anichkov Palace. Decades later, Eugenia Christie was head nuse to the future Alexander II and his sisters. She received a gratuity of 2,000 roubles and a 900 roubles pension.