Deputy Marshal of the Polish Parliament (Sejm), Member of the Polsih Parliament
owner, Grupa Kapitałowa Multico Sp. z o.o.
President, Lewiatan Court of Arbitration
Chairman of the Council, Polish Chamber of Commerce (Krajowa Izba Gospodarcza) Deputy Prime Minister, Minister of Economy of Poland in the years 1997–2001
Secretary of State, Ministry of Justice, Poland
President, Witold Bayer Research Centre of the Polish Bar Association (Ośrodek Badawczy Adwokatury im. Adw. Witolda Bayera), Member of the Polish Bar Council (Naczelna Rada Adwokacka), Attorney-at-Law, Partner,, Głuchowski Siemiątkowski Zwara Law Firm