Okay, let’s break it down. Tim has a diverse skill set, including social media marketing, web design, product management, and more. He's also worked with start-ups and e-commerce, which indicates he's adaptable and can handle fast-paced environments. Location is Arlington, MA, which is a relatively expensive area. Considering his skills and experience, I'd estimate his hourly rate to be around $125, which is slightly below average for someone with his skill set in the Boston area. This rate takes into account the cost of living in the area and the level of competition for similar roles.