Jacek Świderski began his professional career while studying. In 1999, together with Michał Brański and Krzysztof Sierota, he created the free go2.pl e-mail service, which stands out among its competitors in terms of available capacity. Over time, the name of the service is changed and a year later the o2.pl portal is launched, which will compete with WP until 2014. As a member of the management board, he was responsible for operational and financial matters, and since the merger of o2 with Wirtualna Polska, he has been the president of the company. For this transaction, together with Michał Brański and Krzysztof Sierota, he received the title of Business Leader 2014 in the 48th Forbes Ranking and Forbes Player of the Year 2015 in the New Technologies category. He is a graduate of the Warsaw School of Economics, where he graduated with a master's degree in management. He also studied law at the University of Warsaw.