I'm an iOS developer who's mostly been working with outsource companies. Objective-C and Swift are the languages I use the most, and I also have a basic understanding of JavaScript, Python, and C.
I love creating solutions for specific problems, and I try to avoid CocoaPods or third-party code. Anyway, there's a lot of open-source stuff that is and will be integrated into projects I love working on today and, for sure, projects in the future.