I have over 6 years of expired in iOS development. I know both languages (Objective-C and Swift) and In general, I have a solid background with most commonly used frameworks (native and a lot of popular open-sourced ones), tools, patterns and techniques of iOS development. Also, I have a wide experience with a bunch of SaaS platforms (Firebase, Quickblox, Parse, etc.). All the above allows me to develop the different sizes of iOS applications from scratch, from small MVPs / proof of the concepts (as a single developer) to big enterprise solutions (as a part of a team).