Aleksandra Karczewska was named senior associate of the investment services department at Colliers International. Karczewska will be responsible for conducting the purchase and sale of commercial real estate, advisory for Colliers’ clients, acquiring new clients and preparing reports and analyses. Karczewska has six years of experience in investment advisory in the commercial real estate market. She has previously worked for Burlington Real Estate, BSC Real Estate Advisors, Sharman Church Chartered Surveyors and Pekao SA.