Be careful about that enterprise assumption. I've worked for two startups in my career. The first used mainly Java, and the second used mostly .NET. Heck, lots

Be careful about that enterprise assumption. I've worked for two startups in my career. The first used mainly Java, and the second used mostly .NET. Heck, lots of companies you'd consider to be enterprise are building cool projects with React and Angular 2 front ends hooked up to Java or .NET on the back end. Projects like those might be a decent way for you to leverage your current experience and work your way toward back end development.