After graduation from the Medical School, Alexandros worked as a rural doctor in the Medical Center of Anagenisi, Serres, where he gained his first experiences as an autonomous practitioner in the province (obligatory rural service in Greece).
After the completion of rural service, he began working as Senior House Officer in the first part of his training in Surgery, at the Second Hospital of IKA "Panagia", in Thessaloniki, learning the fundamentals of surgery.
In 2001, he joined the Greek Army as a medical officer. During his service he gained valuable experience in primary and acute care of orthopedic patients working in one of the most rural Greek areas, at the Orthopaedic Department of 496 General Military Hospital Didymoteicho.
In 2002 he moved to Britain where he worked as an orthopaedic trainee (Senior House Officer) in Queen's Hospital, Burton-on-Trent and Prince Charles Hospital, Wales, where he set the foundations of his orthopaedic training and became familiar with the British Health System (NHS).
In 2003 he returned to Greece and completed his training in hospitals B 'IKA "Panagia", “Agios Pavlos”, “Genimatas” and “Ipokrateio”. Although living in Greece, he maintained his contact with Great Britain, and worked in multiple temporary assignments at the “Royal Orthopaedic Hospital, in Birmingham, UK.
In 2008 he successfully passed the specialization exams in Orthopaedic Surgery and Traumatology (CCST equivalent) and then went to Britain for fellowship. There, he worked for a year at Wellington Hospital, London, as a Clinical Hip Fellow, with Richard Villar. His fellowship was focused on the hip, with particular emphasis on hip arthroscopy and non-arthritic hip.
Alexandros Tzaveas works currently as Consultant Orthopaedic Surgeon privately, his practice is based in Thessaloniki but he also runs his clinics and theatres at the Interbalkan Medical Center in Thessaloniki and Mediterraneo Hospital in Glyfada, Athens.