Born in Athens in 1913, Aris Konstantinidis studied architecture at the Technische Hochschule in Munich, where he completed his degree in 1936.

After returning to Greece, he began his professional career in public service, working in the Town Planning Department for Greater Athens between 1938 and 1942, followed by the Ministry of Public Works until 1950.

Throughout his career, Konstantinidis played a leading role in shaping post-war Greek architecture. He directed the design departments of the Workers' Housing Organisation from 1955 to 1957 and later served as Head of Design for the Greek National Tourism Organisation (EOT) between 1958 and 1967. He returned to the organisation in the mid-1970s as a special architectural advisor.

Alongside his architectural practice, Konstantinidis was active in academia. He taught as a visiting professor at the Swiss Federal Institute of Technology (ETH Zurich) and received numerous distinctions, including an honorary doctorate from the Aristotle University of Thessaloniki. In 1985, he was elected an associate member of the Bavarian Academy of Fine Arts in Munich, and in 1990 he was awarded the prestigious Herder Prize by the Austrian Academy in recognition of his contribution to architecture and culture.

His work has been widely exhibited and published both in Greece and internationally.

Beyond architecture, Konstantinidis was a prolific writer, publishing books and essays on architecture and the Greek landscape, while photography remained one of his lifelong artistic pursuits.

Among his most celebrated projects are the Holiday House at Sykia, Corinthia (1951); social housing developments in Athens, Piraeus, Heraklion and Thessaloniki (1955–57); the guesthouses and dressing rooms at the Ancient Theatre of Epidaurus (1958–60); the Triton Hotel in Andros (1958); several landmark Xenia hotels and motels, including those in Mykonos, Kalambaka, Paliouri, Olympia and Poros; the Archaeological Museums of Ioannina and Komotini; residential buildings in Athens and Filothei; and his own house and studio on Aegina.

Aris Konstantinidis passed away in Athens in 1993. Today, the architectural drawings for his Xenia hotel programme, one of the most influential public building initiatives in modern Greece are preserved in the Archives of Modern Greek Architecture at the Benaki Museum, safeguarding an important part of his architectural legacy.