Till Tantau is the designer of these languages, and he is also the main developer of the only known interpreter for PGF and TikZ, which is written in TeX.
Obłój acts as consultant and supervisory board member (partly as chairman) in Polsh companies or local subsidiaries of corporations like Asea Brown Boveri, LG Group, Reckitt Benckiser, Alior Bank SA, Prochem SA, Agora SA, Ambra SA, Eurobank S.A., Impel SA, NFI Foksal SA, PGF SA, PKN Orlen SA, Polmos Lublin SA or PZU SA.