After graduated from the medical school, Andreas Filis pursued neurosurgical training in the university hospital of Goettingen. In 2005 he continued his training in the university hospital of Erlangen where he also became board certified for neurosurgery and completed there his doctoral thesis (Dr.med). He has also completed 3 clinical fellowships in the USA subspecializing in neurosurgical oncology, spine surgery and skull base surgery. Andreas has worked 2,5 years as attending neurosurgeon in the imland Klinik in Rendsburg in Germany. He is also associate with the neurosurgical department in the university hospital of Dresden where he carries out academic work.