Tatiana Sessler-Toami was born in Timisoara and graduated from the Academy of Music and Theatre of the West University in Timisoara with a degree in acting in German. As a scholarship holder she studied one semester at the Academy of Music and Theatre "Felix Mendelssohn-Bartholdy" in Leipzig. She has been a permanent member of the German State Theatre Timisoara ensemble since 1988.

Among others, she played roles in "Stella" by Johann Wolfgang von Goethe (director: Frieder Lorenz), as Elektra in "Elektra" by Sophocles (director: Cristian Hadji-Culea), the role of Luise in "Kaballe und Liebe" by Friedrich Schiller, as Nina in "The Seagull" by A.P. Chekhov (director: Clemens Bechtel) and in "Mother Courage" by Bertolt Brecht (director: Victor Ioan Frunză) as well as the role of Petra von Kant in "The Bitter Tears of Petra von Kant" by Rainer Werner Fassbinder (director: Martin Baucks), Lola Blau in "Tonight Lola Blau" (director: Alexandra Gandi), the role of the Queen in "Cymbelin" by William Shakespeare (director: Alexander Hausvater), she appeared as Martha in "Who's Afraid of Virginia Woolf" by Edward Albee (director: Michael Bleiziffer) and in the play "Noises off" by Michael Frayn (director: Wolf E. Rahlfs). In addition, there are numerous appearances in fairy tale productions and entertainment programs of the theatre. 

In 2011 she was given the Award of the Timisoara County Council "Pro Cultura Timisiensis" for special merits in promoting Timisian culture. In 2012 she received the honorary diploma "40 years of German language broadcast AKZENTE", for the long and good cooperation with the editorial staff of the broadcast in German language of the Romanian Public Television.