Career
He was co-creating for some time with Marek Sell an anti-virus program mks vir. In 1999 he coded Gadu-Gadu instant messenger which first version was released on 15 August 2000. Beginning on 26 March 2007 Gadu-Gadu Société Anonyme is listed on the Warsaw Stock Exchange.
From 16 May 2007, as a result of resignation from membership in the supervisory board, Foltyn does not act in the company, staying a notable shareholder.
He used to publish in leftist Trybuna Robotnicza magazine. Earlier he used to participate in the program board of Polish Labour Party and among leaders of Warsaw department of Polish Socialist Party.
On 14 June 2007 Foltyn took the lead of the new Social Democratic Party. The party’s registration was not completed.
In Polish parliament election 2007 he was seeking a mandate starting from the Polish People"s Party Warsaw list as the number one.
He was not elected.