The Kenyans also require a work-permit, which is close to impossible to get (unless, of course, you have some kind of contacts).
Kenya Airways will never hire foreigners, KALPA have stopped an attempt to hire expat FO's on the 737 a few years ago, and will continue to do so.
Local domestic companies at Wilson Airport might take somebody occasionally, but there are many other guys looking for jobs too, so your chances are rather slim if you have no insider friends.
Unless you are Kenyan citizen with some kind of influence, forget it. The ever-present corruption and incompetence in government offices will drive you mad, long before you get anywhere near the flight-deck.