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Make some of your code public on Github. Do a web or mobile app or two - even proof of concept type stuff but it has to be 'complete' in the sense that it should do the job it's supposed to. Use these to demonstrate your programming ability during interviews, and let employers know you're ready to learn new tools.

Pick one set of tools to be your current 'major', say Swift perhaps and spend time getting better at Swift than the rest of the stuff you know. Apply for Swift jobs and be confident!

One more thing. Always be prepared to switch your major to a new one (language, platform). If you ask me, Elixir/Phoenix has lots of potential and 2017 might be seeing a lot of job openings for it.