The first surprise that many Spaniards get when they arrive in Switzerland is to discover that their university degree does not work automatically here. Not because it doesn't work, but because the Swiss system has its own rules, and it depends a lot on what you want to use it for.
If your profession is regulated, that is, if you need official authorization to practice it in Switzerland, the process is more demanding. Doctors, nurses, pharmacists, architects, lawyers, psychologists: for this type of profession you have to go through SEFRI (the State Secretariat for Training, Research and Innovation), which is the body that recognizes foreign qualifications. Depending on the profession and canton, the process may include file recognition, aptitude testing, or supervised internships.
If your profession is not regulated, in theory it is enough for the employer to accept your degree. In practice, many also ask for formal recognition to accredit the level of training and negotiate the salary from a clearer position. SEFRI may issue a level statement in these cases.
A detail that is often overlooked: in order for Switzerland to recognize your degree, you usually need it to be apostilled and, in many cases, translated into German, French or Italian depending on the region where you are going to work. Without that, the process doesn't move forward. If you plan to settle here in the medium term, this should be resolved before you need to.