Born in 1962, in Istanbul, Tanju Özelgin graduated from the Faculty of Fine Arts Industrial Design Department of the Marmara University in 1984. In 1987, Tanju Özelgin founded Scala Design, and 1987 he designed and implemented projects for fair stands, yachts, showrooms, homes, offices, publicity campaigns, furniture and industrial products.
Between 1993-1995, he worked with IN Mobilya (IN Furniture), of which he was a founding partner and cofounded Parlak Kırmızı (Bright Red) in 1996 with Ertan Binme, where they concentrated on interior design projects and applications, designs and development of industrial products, preparation of digital and video graphics. Since 2005, he continues his work at TO Design Studio, which focuses on interior design and industrial product design. Özelgin also continues to work as faculty member and project counselor since 1998.
He is a jury member, exhibition participant and workshop manager in many competitions.