Lech Cieślik is an Oracle APEX expert with over 10 years of commercial experience. He works within international teams, gaining experience in healthcare, pharma, telecommunications, financial and retail sectors. Lech is a regular speaker at international conferences (APEX World, UKOUG, APEX Alpe Adria, OUGN), authors articles about Oracle APEX on the Pretius blog, and is a hackathon mentor.