Sevi Triantaphyllou obtained her first degree in archaeology (1990) and M.Phil. in prehistoric archaeology (1992) at the Aristotle University of Thessaloniki, Greece. She then completed her M.Sc. in osteology, paleopathology, and funerary archaeology (1993) and Ph.D. (2000) at the University of Sheffield, U.K. She has excavated, cataloged, and studied human skeletal material in Macedonia, the Peloponnese, Crete, and the Cyclades. She has worked as freelance researcher in various projects on the prehistoric Aegean (Neolithic Paliambela, Neolithic Knossos, Middle Helladic in the Argolid, Nemea Valley, EM Odigitria tholos tombs, EM/MM Petras, LM Mochlos, etc).
Triantaphyllou held the 1994-1995 J. L. Angel Fellowship at the Wiener Laboratory, American School of Classical Studies at Athens, an IKY (Greek State Foundation) post-doctoral fellowship to study the skeletal material of a 4th-century B.C. mass burial in Pydna, and a post-doctoral fellowship from the Institute of Prehistoric Aegean to examine the dental micro-wear of prehistoric skeletal populations from northern Greece, the Peloponnese, and Crete. She has also taught as part-time lecturer in undergraduate and postgraduate courses at the department of archaeology and history in Thessaloniki and Crete, and was recently elected as a lecturer in prehistoric archaeology and osteoarchaeology at the Aristotle University of Thessaloniki. Since 2008, she has been actively involved in the excavation, study, and publication of the human remains from Petras Rockshelter and the House Tombs Cemetery.
Her research interests include mortuary practices and the manipulation of the deceased, dietary reconstruction, and the study of prehistoric populations in the Aegean.