I'd probably need to know where in Mexico City you plan to work, because as already said commuting is a real pain.

As mentioned Polanco is a good area, very near the central part of the city (just a bit west).

Other good areas are Santa Fe and Interlomas in the western part. Both of those areas are highly populated with expats and have a lot of amenities in terms of modern shopping centers and attractions.

Lomas de Chapultepec is also a good area slightly west of Polanco.

Again, it really depends on where you want to live and also how much you would want to spend. If you let me know, I can probably help more.

My cousin used to live in Interlomas and absolutely loved that area, but again it depends on cost/commute time. Generally, very good apartments can run from $800 to well over $3000 USD per month.