Jacek Tkaczyk possesses expertise in analytics, market research, consumer behaviour, marketing research, customer insight and 8 more skills. Colleagues describe him as "I first meet Jacek when he came to teach us about one of Nielsen's inner system. Before Jacek arrived, we understood we deal with an outstanding professional, we build the syllabus prier to his arrival, and when he arrived, he brought all the studding material. His excellent command over the subject and the ability to address the need of each department's individual made him an outstanding professional. He helped us cut our working time and introduced us to new improved… Show more"