This is pretty normal. My kids do the same. They get super happy on seeing their father in the evening and the maid in the morning. Take it positively as your child isn't afraid of strangers so far. Help him develop his social skills. Take him for a stroll in the evening so that he learns to interact with new faces and enjoy with more people around.

sometimes our kids get bored of seeing only face.. so they do this.. im housewife, my daughter does the same thing when her dad comes home. and same thing when maid comes home. everybody has different energy level, so babies get attracted to that. nothing to worry..

Spend more time with your child and he will give more attention to you. It is quiet natural for a child to go to the maid. The maid can do other work while you play with the kid