Matt Dirksen, AIA

Matt is a licensed architect in Maryland and has a BS-Architecture from the University of Maryland, as well as a master’s degree from San Francisco Institute of Architecture, a school that specializes in green architecture and ecological design. Matt spent his first 10 years out of high school gaining experience in commercial construction, architecture, and engineering. For the next few years, Matt worked in an architecture firm specializing in commercial, multi-family, and high-end residential work. Since 2003, Matt has worked exclusively in residential design-build. He brings a rich blend of excitement, simplicity and pragmatism to every project he oversees. Matt and his family live in Greenbelt. He’s served on Greenbelt’s Advisory Committee for Environmental Sustainability since 2008. He is an Eagle Scout and volunteers for Scouts BSA Troop 214 in Riverdale for his son and two daughters.

Roger Carvalho

Roger has been in the construction industry in the Washington Metropolitan Region for over 25 years. He was raised in Rio de Janeiro, Brazil, and moved to the DC area for college, where he received his bachelor’s in Business Management. Roger takes pride in transforming ideas into brilliant reality, exceeding clients’ expectations, and caring for his client’s needs and concerns along their renovation journey. As a leader, Roger is an energetic coach with exceptional construction management skills; who manages controls such as cost, planning, scheduling, risk, and resource allocation.

Outside of work Roger likes to spend his free time playing soccer, deep-sea or salmon fishing, going to the beach, farming in his orchard, or spending time with his wife, three sons, and dog.


Michael Gotthelf

Michael provides cost estimates for our sales and design team—several times during the process from initial consultation, through schematic design and into formal construction documents. He’s a 15-year seasoned veteran at Landis. He’s a graduate of Kenyon College with a degree in English. Michael is an avid cyclist and often bikes to work.

Jess Balmes

Jess joined Landis in March 2021 to help with our transition to CoConstruct project scheduling software. She is from Colorado and grew up in the business with both her father and grandfather working as general contractors. She was running a framing crew right out of high school and decided to make a career in construction after college, including running a construction company that built ultra-custom homes. She enjoys educating friends about how to take care of their homes, as well as woodworking, traveling, tennis, and walking her dogs Oakley and Breck.