UI Design for Helpdesk and ticket system

We are looking for a UI designer to improve the user experience of our helpdesk and ticket system. The main goal of the design is to increase efficiency and make it easier for users to navigate through the system. We have no specific brand or design guidelines to follow, but we do want the design to emphasize ease of use and clear organization of information. The ideal candidate should have experience in designing user-friendly interfaces and a strong understanding of information architecture. Visual appeal is also important, but not at the expense of usability.