We do not have a sort_by parameter as part of APi request itself. Instead, please paginate the API requests, save the results and sort it at your end. If you are looking at only fetching recent job posts and if your use case permits it, I think a better fit is our job feed where we run the searches on our server and generate a consolidated single CSV/JSON file at fixed frequency (24h, 7 days etc.) that is pushed out to a API endpoint. If you are interested in it, please email us at info@specrom.com