Okay, let’s calculate this. Peter has a broad range of skills, including Machine Learning and Human Computer Interaction, which are in demand. He’s also proficient in multiple programming languages like C++ and Javascript. However, his experience in full-stack web development and mobile app development (iOS) puts him in the mid-range for software developers in the US. Considering his education from the University of Toronto and his location in Seattle, I’d estimate his hourly rate to be around $120, which is slightly below the national average for software developers in the US. This rate is also consistent with the rate for mid-level software developers with similar skill sets and experience.