Okay, let’s calculate this. So Irina has a mix of skills that are in demand, but not extremely rare. iOS development, Swift, and Objective-C are all popular skills. However, she also has experience with multithreading and unit testing, which are useful but not necessarily in high demand. Animation and Coremotion are specialized skills, but not extremely rare. Location is Bothell, Washington, which is a relatively affordable area. Considering her skills and location, I’d estimate her rate to be around $125 per hour, which is slightly below the national average for iOS developers in the US.