septival started taking drama classes at the age of 8 with Maulde Coutau, then Michel Barras, who have led him from Aristophanes to Commedia dell'Arte, Molière, Marivaux and Claire Bretécher.

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From 1998 to 2000 he performed with a troupe called Théâtre des Rêveurs in Boris Vian (Le Chasseur français), Ionesco (Macbett) and Max Frisch (The Arsonists). On these projects he worked with Charles Baron and René Donzé, among others. 

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In 2001, he impersonated Moulineaux in A Fitting Confusion by Georges Feydeau with a one-time group. 

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After a ten-year break he resumed acting in 2011, taking part in a revue (Revue et non corrigée) at Geneva's Petit Music'Hohl, where he juggled with multiple characters, accents and choreographies at a frantic pace.

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He finally got back to his preferred theatrical genre, namely vaudeville, by joining the Théâtre de l'Espérance in 2018, where he has been seen in turn as the equivalent of Henry Lodge in a French version of Move Over Mrs. Markham by Ray Cooney and John Chapman, as the clumsy Julien in Patrick Haudecoeur's Thé à la menthe ou t'es citron and as the hys-terical Kevin Vautier in La Presse est unanime, by Laurent Ruquier.

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After several postponements, 2021 marked septival's first performance in English. He was Seymour Krelborn in Little Shop of Horrors, produced by the Geneva Amateur Operatic Society.

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In early 2022, he reintegrated Theatre de l'Espérance to impersonate Claude in Le Prénom, a grating French comedy about a friendly Moroccan dinner which turns into a setting of scores because of a moderately funny joke. Later the same year, he was also Dr. Peloursat in Treize A Table, another French comedy.

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Inspired by all his experiences, he is the author of several vaudeville plays.