Our Commitment

Maple Engineering is a plumbing, mechanical and electrical (PME) engineering design firm located in downtown Raleigh, North Carolina. In operation since 2011, we have a wide range of experience in new developments and renovations throughout the United States. We are committed to serving our clients, community, and each other with passion and integrity.

Core Principles

Our desire to be beneficial partners to architects and contractors on each and every project is visible through our core principles.


Client Empathy

We prioritize timeliness and communication.



We handle all permit and construction issues for you.


Competitive Pricing

We work efficiently to keep costs reasonable.

Our Team

Our team of engineers and designers has a wide range of experience and looks forward to the opportunity to assist you with your next project.

Zack L. Tomlin, PE

Zack is a graduate of NC State University and a North Carolina native.  He has been around the construction industry all his life as the son of a contractor and a childhood watcher of “This Old House.”  After graduating from NC State, Zack worked for multiple PME firms in the RDU area before joining Maple Engineering in 2011. Zack is a licensed engineer in several states and holds an NCEES record.

Dustin M. Metayer, PE

After graduating from the University of New Hampshire, Dustin moved to NC in search of opportunity and warmer weather. Since joining Maple Engineering, Dustin has earned his NC PE license and enjoys designing projects that impact his local surroundings.  Away from the office, he spends much of his time outdoors, and can be found biking around the trails of Raleigh.

Kevin A. Sweeney, PE

Kevin began his work at Maple Engineering as a part-time designer during his final semester at NC State. After graduating with a BS in Mechanical Engineering in 2015, Kevin became a full-time employee of Maple focusing on mechanical design and has since earned his NC PE license. Outside of the office Kevin frequents local music venues, enjoys travelling to places far away, and over-analyzes the performance of the Carolina Hurricanes.

Robert S. Alfaro

Rob joined the Maple team at the end of 2012 and has worked his way up from CAD technician, to PME designer and finally to Project Manager.  Outside of work Rob enjoys spending time with his wife and two daughters. He also enjoys working on, detailing and racing his car, PC gaming, and reading a good book. 

Richard D. Groat, III

Richard moved from the Detroit suburbs to study Engineering Design at NC State University. Following his appreciation of programs such as AutoCad and Revit, he joined Maple in 2013. Now an AutoCad Certified Professional, he focuses his attention on various trades specializing in Plumbing. When he is not managing projects, you can find him at local car shows and the occasional dog park with his husky Luna.

Dana W. Beasley, PE

Originally from Minnesota, Dana moved to North Carolina after completing a degree in Mechanical Design Technology. After 8 years as a draftsman for a PME firm in Wilmington, NC, Dana moved to Raleigh to finish his engineering degree at North Carolina State University. Since joining Maple Engineering, Dana has completed his degree and is working towards his PE license. Dana enjoys trips to the beach and mountains and spending time with friends and family.

Nathan P. Birkedal, PE

Nathan is a licensed engineer and graduate of NC State University, with a degree in Mechanical Engineering. He joined Maple after graduation in 2016, and has specialized in Electrical Design and Project Management. Nathan’s interest and passion for real estate, engineering, and working with others led him to the PME field. Outside of the office Nathan enjoys time with family, playing basketball, golf, and listening to a good podcast.

Drew P. Adams, EI

Drew started working with Maple after graduating from NC State. Drew started his time at Maple with Mechanical Design and has since expanded into Plumbing Design and Project Management. When he’s at home, Drew enjoys playing music and stressing about the latest NC State game with his friends and family.

Lori M. White

Lori joined Maple in 2017, bringing with her experience in office administration and HR. She has lived in Raleigh since 2008 and has enjoyed witnessing the city’s growth and getting to see how Maple has contributed to its advancement. Outside of work, Lori enjoys spending time with friends and family, going for walks at NCMA and the American Tobacco Trails and taking quick weekend trips to the mountains.

Heath B. Slabach

Heath joined Maple Engineering shortly after finishing his studies at NC State, where he received a B.S. in Operations and Supply Chain Management. Since then, he has helped keep the daytoday operations of Maple on track and improve its processes. Heath loves playing basketball, disc golf, and music on his guitar. He and his wife Mary Ella are members of The Summit Church and enjoy exploring the city together.

Let's Work Together.

708 St. Mary's Street - PO BOX 10443 - Raleigh, NC - 27605

(919) 341-4247


Follow Us on Instagram

This field is for validation purposes and should be left unchanged.