Answer:
I don't know anything about your company but I can give an example...
Example 1: “Dear Jiten, On behalf of the XYZ management team, we would like to appreciate you for the amazing work that you did on the ABC project. Your professionalism reflects in the countless hours that you put into the project to ensure it gets completed smoothly.
Example 2: The positive work attitude you have inspires your team, and we are lucky to have you! Thank you for being a part of our team. We at [company name] appreciate your efforts in doing such a great job. In addition, your shinning nature makes us so happy to come to work every day!