I knew a guy who got his master's in CompSci and now has a software job with a very popular dod contractor. The problem is, those jobs usually suck, but they make you sound smart because woooo, big name company.
I seriously doubt it's worth it. People like to poo-poo stopping at bachelor's because of "opportunities", but there are shat-loads of opportunities for experienced IT workers. So maybe, in theory, you have 20 opportunities instead of the 30 you could have with with fancy master's degree. Who freaking cares?
If you don't have some deep love of computer theory and you want to FI in the next 5-15 years, forget the master's, IMO. The people hocking master's degrees either 1) have earned one and feel a deep need to defend their decision and deny their sunk costs, 2) are educators or otherwise think highly of formal education, 3) are people obsessed with career advancement, who typically believe in climbing the ranks until age 65, or 4) are lazy HR bums who don't have any better way to distinguish good candidates from bad, and you don't want to work for them anyway. (I'm not being completely serious here, but I am poking fun very intentionally)