Hi Peter, is it possible to get a L1 visa if I don't have a degree but been at the company for more than 5 years in a European office?
Yes. There are two options: via a blanket L-1A visa application as a manager (the blanket L is available to relatively large global companies) with a US Consulate or via an L-1B petition as a professional/specialized worker with USCIS.
Thank you!