Not Just Products.


We provide complete solutions designed to help you reach your goals and increase efficiency. And we’ve been doing it for 25 years.

Not Just Solutions.

Problem Solvers.

Our service and support options are flexible, customizable and proven. We help customers quickly and easily realize their ideas.

Not Just How It Works.

How you work best.

With unrivaled expertise in architecture, engineering, mapping and construction, we offer award-winning training. Customized, onsite, online— the options are nearly endless.

Not Just Trusted.


Our federal and local agency experience with building information modeling, full building lifecycle management and other mission critical objectives is unmatched.

Helping you succeed with on-demand Training.

The CADD Community.

Let us help you develop the skills you need to succeed, with on-demand courses and exclusive resources. The CADD Community is a single source of knowledge to enhance your professional development.

Meet Our Team

Marissa Gagne 
Practice Manager – Civil Infrastructure
Marissa leads the Civil Infrastructure section of CADD’s consulting team. She specializes in Civil 3D, Land Desktop, Map 3D, Raster Design, and other GIS solutions. She has over 25+ years of Autodesk product experience, is an Autodesk Certified Professional in both Civil 3D & AutoCAD, and is an Autodesk Certified Instructor. In her free time, she enjoys watching movies, baking, puzzles, playing tennis, taking Tae Kwon Do classes, and spending time with her family and new puppy. She's also a huge fan of Washington Capitals hockey! As for little-known facts, Marissa collects original Sherlock Holmes literature and unique decks of cards.