Taxes in Lausanne

Hello! My family and I are preparing to move to Lausanne in July for a job. We are trying to find information about paying taxes in Lausanne, including what percentage of our income will go to local/federal taxes. Can anyone point us to resources (online or books)? Does anyone have recommendations for a local tax professional who could advise us? To be honest, right now, we are just looking for ballpark figures.

Thank you!!