Founded in 2005, Matthews Design Group (MDG) has become the largest civil engineering firm based in St. Johns County, and offers full service civil and land development engineering throughout Florida.

We have earned a solid reputation for providing high quality, innovative engineering solutions provided in a timely and cost-effective manner.

This reputation of dedication, technical experience, and a proven record of success, has afforded MDG the opportunity to work under numerous continuing services contracts as an extension of our clients’ staff. 

We know that our staff is what sets us apart and the development of long-term business relationships is important to us. Our employees are dedicated to our clients, our co-workers, and our community.

With continuous training in current technology and encouragement to be innovative, our employees are our most treasured assets. We appreciate our clients and our employees for their contributions to our continued success.

Together we are actively working to better our community.

FDOT Work Group Prequalifications

  • 3.1 – Minor Highway Design
  • 3.2 – Major Highway Design
  • 7.1 – Signing, Pavement Marking and Channelization
  • 10.1 – Roadway Construction Engineering Inspection
  • 13.6 – Land Planning/Engineering
  • 15 – Landscape Architect


  • CLARB Certified Landscape Architect

Our History

Matthews Design Group icon in blue

After growing and learning from their respective career paths, Rob and Keri had the desire and ambition to create something unique. They wanted to combine their favorite aspects from prior work experience while adding their own innovation and fresh ideas. Rob and Keri’s vision was, and still is, to make the clients’ projects successful by being the best at what we do, hiring the best talent, and creating the best work environment. 

MDG was founded in 2005 with two employees and has since grown to a team of almost 50. In 2022, MDG joined the DCCM family of companies, allowing MDG to utilize DCCM’s vast resources and experience. Working from our headquarters in St. Augustine, and satellite office in Jacksonville, MDG proudly serves clients throughout Florida.

Together, Rob and Keri believe investing in our employees and our culture is key to attracting and maintaining the best talent and setting MDG apart from other firms. They have created a positive and collaborative work environment that translates into positive relationships and creative solutions for clients.

Rob and Keri Matthews stand outside smiling.

our dedication and service extend to what we do for our community