“The more specialized you are, the more premium you’re going to command.” This is what Rich Pearson, Upwork’s Senior Vice President of Marketing, said recently regarding the highest paid Freelance skills.

Upwork just released its report on the top 20 skills for freelancers based on billings on the company’s site throughout 2017. The list was dominated by jobs in the Technology Sector — a total of 16, and only four coming from outside the technology sector.