Just genuinely inquisitive. I looked through the listings of freelancers' required credentials and skill sets. The dropdowns appear to be more tech-related. For experts in oil and gas streams like myself, I'm just speaking out loud to make sure I'm in the correct spot to locate a hire.
While Upwork is primarily used for services that can be delivered online, there are a number of consulting, project management and engineering subcategories and skills being offered that you could look into and consider for your profile. You can also check out profiles of other freelancers with a background similar to yours to help you decide on your approach.