This assumes that the software is proprietary - which is something I didn't write in my comment. gEvent, etc, aren't proprietary - they're open-source. There'

This assumes that the software is proprietary - which is something I didn't write in my comment. gEvent, etc, aren't proprietary - they're open-source. There's no reason an engineer who's been around the block at least once wouldn't be familiar with the various OS libraries in various languages (these days, that's probably ruby, python, nodeJS, and maybe java if you're working in big data). There's no way that someone who knows what they're doing would be able to learn Django or Rails implementations quickly but would take "x months" to learn a ruby + zeroMQ + mustache implementation. Months? Someone's sandbagging ;)