This is the obvious answer, do it part-time. Its very do-able while working full-time, perhaps more difficult with a family, can take 2-3 yrs though. I'm glad I did a MSc, learned some deeper comp sci and its evidence of achievement to employers, especially doing part-time. Full-time though possibly not worth the career opportunity costs and lost income , unless, as others have said , you long-term wish to move into academia