It is a bit difficult to find research opportunities. A browse all option would be helpful. Also, allowing filters to be applied to the browse all option would make the search easier.
You can search for all research positions by clicking on the browse button located at the top of the page. Also, you can do an advanced search by clicking on the dropdown arrow next to the search bar and clicking on the Advanced search button that pops underneath. But currently you cannot apply filters to the browse all option.
Please let us know if this is useful and if you have any other questions.