Jongen is regarded as a "party philosopher" of the right-wing AfD, having been called "chief ideologue" or "thought leader".

After three months in India, he writes a master's thesis in 1996 entitled The essence of spiritual knowledge from the Advaita Vedanta Shri Shakaracharyas, which was published by Eugen Diederichs in 1998.

[5] In 1999, he started a PhD at the State University for Design (HfG) of Karlsruhe under Peter Sloterdijk, supported by the Leopold Ziegler [de] foundation.

Stuttgarter Zeitung noted that Jongen has failed to adequately distance himself from the far-right Flügel faction of the party, led by Björn Höcke.

This biography article about a member of the German Alternative for Germany (AfD) is a stub.