Jacek Jonak is the founder of the firm. In 1989-1997 he participated in creating the institutional and regulatory framework for the Polish capital market and worked in The Polish Securities and Exchange Commission, in the last two years as a deputy chairman for market supervision. In 1997-2007 he was a partner in the global law firm, Allen&Overy.

He advised Polish and international businesses and financial institutions, participating in the biggest and the most difficult transactions, including public offerings of PKN Orlen, PKO BP and TVN and many other equity and bond offerings. He advised Polish Ministry of Finance in connection with the majority of Eurobond issues to-date as well as on issuing structured notes and was involved in a number of municipal finance projects, including establishing domestic medium term notes program and first issue thereunder. He participated in the debt restructuring of Netia SA, in establishing and subsequently selling the Norwich Union pension fund and in many other transactions in the merger and acquisition area. He advised the biggest domestic and global banks on regulatory matters, especially in relation to the bankruptcy law and the so-called netting, as well as on creating standard documentation for derivative and structured debt instruments. He conducted licensing cases and appeared in proceedings before financial supervisory authorities. He is a member of the Warsaw Stock Exchange’s Committee for the Development of the Bond Market and was recommended in the rankings published by Rzeczpospolita, Forbes, Legal 500 and Chambers Global.

He graduated from the French Ecole nationale d'administration (promotion Condorcet). In 1997-2007 (until the establishment of a permanent embassy) he was a honorary consul of the Grand Duchy of Luxemburg in Poland.