Our Team

Robert Henkey


As president of Metal Tech, Rob is responsible for a growing company that exceeds $10,000,000 in annual sales while still maintaining a professional friendly relationship with his customers. Rob leads his team to ensure all aspects of the construction process including sales, research and development, growth, and cost analysis are done with utmost quality. Rob is a qualified construction management professional and holds a Bachelor of Business Administration degree from Grand Valley State University. Rob has more than 20 years of experience as a construction entrepreneur and has managed all aspects of the construction process. Rob works side by side with building owners, property managers, developers, and schools to assist them in making decisions about allocating resources by providing assurance that construction information is accurate.

Liz Wiseman

VP of Operations

Liz has nearly 20 years of experience in commercial and industrial construction. She began her career as an intern for a large General Contractor and upon receiving her BBA in Operations Management from Grand Valley State University in 2003, she began at Metal Tech as a Project Coordinator. Liz has worked in every aspect of the office including accounting, estimating, and project management. Liz currently oversees the daily operations at Metal Tech focusing on quality, safety, efficiency, and effectiveness.

Glen Drenten

VP of Construction

Glen has more than 20 years of experience in the construction industry. His expertise includes Pre-Engineered steel, new construction, and remodels. Glen began his career as a laborer with a local General Contractor and worked diligently to become Vice President of Construction. Glen joined Metal Tech in 2018 with a focus on estimating, sales, and project management.

From start to finish of any project, Glen puts quality and safety first. He believes strongly in making partnerships with his customers so that in the end excellence is delivered.

Zach Lewis

Senior Project Manager

After graduating with a bachelor’s degree in architecture from Lawrence Tech University, Zach started his professional career in construction materials and architectural testing. Zach joined Metal Tech in 2017 andhas now been in the construction industry for 10 years. His responsibilities include estimating and project management for a diverse range of commercial construction projects. Zach’s ability to develop strong personal relationships with his vendors as well as his attention to detail has resulted in many successful projects at Metal Tech.

Ileah Doctor

Account Manager

Ileah joined the Metal Tech team in March of 2022 and currently serves as an Account Manager within the facilities management division of the company. She attended the University of Nevada and has a background in property management and customer service.

Alex Santiago

Project Manager

Alex has more than 25 years of metal construction experience.  He began as a laborer while at Calvin College, working on metal roofs.  After graduating and pursuing other career opportunities he went back to his love of construction.  Alex uses his expertise to estimate, project manage, and close out projects under budget and ahead of schedule.  He believes in the notion of over communicating, while developing relationships with general contractors and trade partners.