BE(SoftEng) here. Professional 10 years. ~3 years at current employer who is the dominant IT vendor in my country. There are definitely lifers within this organisation, the pay and benefits and conditions are good.

I plan to broaden my horizons with philosphy and business studies and hopefully mitigate institutional boredom by growing my own side-projects until such time as this overtakes my salary.

Can't really see a masters being particularly useful.