Biopharmaceutical company Affymax has appointed Karin Walker as vice president of finance and chief accounting officer. In this newly-created position, Walker will be responsible for the strategic and operational leadership of the finance function and accounting activities.

Walker has over two decades of financial management experience, including in the biotechnology and pharmaceutical industries. Prior to joining Affymax, she served as vice president of finance and corporate controller at biotechnology company Amyris, overseeing all accounting functions.

Before joining Amyris in 2009, Walker served as vice president of finance and corporate controller at biopharmaceutical company CV Therapeutics. She also held senior financial leadership roles at companies including online media company Knight Ridder Digital, mobile file sharing company Accellion, and internet software provider Niku Corporation.