Scott Erricson, P.E.

Scott is driven by challenge. He is always striving to be better and do more. As a self-proclaimed “anti-engineer engineer” his creativity in structural solutions is unparalleled, refreshing, and highly valuable.  Scott is down to earth, and a straight shooter that always delivers when he commits. Consequently, he is very good at client relations, and gets high praise from those he has worked with. Scott is excited to help bring up the next generation of creative and disciplined structural engineers.

Chad Vogt, P.E.

Chad is not your average engineer. He blends intellectual creativity with practical constructability to tackle problems from a different point of view. He lives by the dual codes to protect the public, and serve his clients. Chad strives to achieve the client’s goals while keeping public safety at the highest priority. He is creatively different in the perfect way to engineer for the future.

Kate MacDougall, P.E.


Kate’s energy is infectious. She is spontaneous, fun, and great to be around. Her smart, strong, and sentimental personality brings out the best in those she works with. Always willing to help others out, Kate takes pride in her work and strives to reach new levels of quality. She exceeds project timeline expectations, proving to be a valuable asset for the team, and the project as a whole. Her ultimate goal in life is to be happy in the present while excited for the future.

Geoff Sandberg, P.E., S.E.


Geoff’s experience and proficiency grants him a level of mastery that sets him apart from other engineers. His fast paced energetic personality overflows into his work allowing him to complete projects quicker than most. Geoff is driven and reliable. When he sets a goal, it gets done. He understands the importance of each project and sets the pace to help the team achieve success for their clients.

Mac Schroeder, P.E., S.E.

Mac is a dedicated structural engineer who has spent the past decade designing buildings of various forms and functions. He has worked on schools, hospitals, offices, retail, grocery stores, and residential buildings. He is a forward-thinking engineer who will spend the time to evaluate a design for cost, practicality, and ease of construction. He is focused on achieving each client’s vision and working with a team to reach their projects goals.

Theresa Mordaunt, P.E., S.E.

Theresa is an accomplished structural engineer with an in-depth portfolio of projects. This includes high-end residential, schools, multi-story buildings, service structures for municipalities, and more. Her commitment to excellence and her attention to detail is an asset to every client she works with to reach their goals.

Corey Hollmann, P.E.

Corey began his career in Hamden, Connecticut where he worked for a multi-discipline engineering firm in the structural engineering department for several years. He then moved to another structural engineering firm in Branford, Connecticut before coming to e2 engineers in 2020. Corey has worked on a wide variety of residential, commercial, and educational projects and has developed expertise in a wide variety of structural analysis software as well as with drafting software Revit and AutoCAD.

Timothy Manchester

Tim has recently been promoted to Senior Engineer. He is a reserved, open-minded, and intuitive member of our team. Tim is also known for his relatable character and demeanor. With his love for math and his desire to learn, Tim is a perfect fit with the e2 team. He is comfortable setting his boundaries and will always complete his work with the best interest of safety and structural soundness in mind.

Trey Zaharek

Trey began his career as an intern with e2 after his freshman year of college. Since then, he has held the roles of Project Engineer for e2 and Project Manager on high end residential projects with another firm in Boston, MA. Rejoining in 2020, he has blended the two backgrounds to become more budget and schedule conscious with his design work. His favorite part of engineering – seeing his designs fully constructed. Trey is be part of the e2 Concord, MA team.

Matthew O’Brien, P.E.

Matthew O’Brien has joined the e2 team as a Project Engineer at our Concord, MA location. Matthew’s experience includes structural design of buildings as well as forensics engineering. When he’s not at work, you can find him hiking or skiing in the great outdoors. Welcome aboard!