There will be one or more openings for very part time English teachers at my university this spring (start January). One will need to have some background in logistics; the other, in computing (telematics, as it's called here), because these are courses in English for Special Purposes. The pay won't knock your socks off, at 160 pesos/hour, but the work environment is good, and the students enthusiastic. Each course will have five paid hours of work a week (contact hours): there is no compensation for the time spent preparing lessons.