Cassandra Willemstein

Cassandra Willemstein currently serves as a Project Executive at MacDonald-Miller Facility Solutions since August 2025. Prior to this role, Cassandra worked as an Account Executive at Ameresco from August 2024 to August 2025 and served as the Regional Sales Director at AQUIS - Air Handler Refurbishment & Optimization from July 2022 to August 2024. Cassandra began a career at Johnson Controls in July 2015, holding positions ranging from Account Executive to Customer Service Agent Assistant until June 2022. Cassandra earned a Bachelor's degree in Economics from the University of North Carolina at Chapel Hill between 2009 and 2012.