Bartek swam competitively in Poland, representing his country at international level, specialising in sprint freestyle and middle-distance freestyle events. Bartek was a gold, silver and bronze medallist in butterfly and freestyle events in his National Championships and also won numerous International Competitions. He has coached children and adults for over 12 years, from beginners to international swimmers and triathletes. Bartek studied Sports Science at the Academy of Physical Education in Krakow. He currently competes as a triathlete and open water swimmer (and has been first out of the water in the 30 to 34 Age Group in London and Eton Triathlons).