There are so many jobs listed for developers familiar with the Paypal API on GetAFreelancer that the site has a category dedicated to it. And that's not all--there are over 300 API-related listings on the site, which connects freelancers with people who need programmers and designers.
The United States Department of Veterans Affairs has been helping veterans find employment for years. They provide job listing and educational services that are designed to make the transition a lot easier. With the Addition of the VetSuccess API, the VA is making job posting a lot easier for prospective employers.