As Electrical Designer at SMRT, Susan brings experience as a drafter at an MEP firm before transitioning into electrical design, joining Petersen Engineering, now an SMRT company, to continue building her expertise in sustainable design practices.
Susan holds a Bachelor of Science in Interior Design.
As Lead Mechanical Engineer at SMRT, Sarah brings over 20 years of experience in mechanical engineering, providing technical oversight and direction for high-performance, sustainable mechanical systems across a diverse range of project types. She leads teams through all phases of project delivery, with a focus on quality, constructability, and integrated design.
Sarah's project experience spans multi-family housing, water and wastewater treatment facilities, commercial buildings, historic mill conversions, and complex occupied rehabilitation projects, including new construction multi-family projects certified under PHIUS Passive House standards.
Sarah holds a BS in mechanical engineering from the University of Vermont. She is a licensed Professional Engineer in New Hampshire, Massachusetts, Virginia, Rhode Island, Connecticut, New York, Pennsylvania, and Maine, a LEED Accredited Professional, and a Certified Passive House Consultant.

As Senior Electrical Project Engineer at SMRT, Bill designs and reviews electrical systems for a variety of projects with a focus on multifamily residential, collaborating closely with architects and project teams to resolve design and construction challenges. He began his career as an electrician before transitioning into engineering, then spent twelve years with MEP firms in New England, developing expertise in large-scale building electrical system design and project management on multifamily residential projects along the east coast.
Bill holds a BS in electrical engineering from the University of Massachusetts Dartmouth.
As Mechanical Design Engineer, Project Coordinator at SMRT, Kate brings experience supporting clean energy generation early in her career, developing technical and project management skills. She takes a collaborative approach to meeting efficiency, sustainability, and client goals across project teams.
Kate is a first-generation college graduate with a BS in mechanical engineering from Florida Atlantic University and is working toward Professional Engineer licensure in New Hampshire.
As Executive Assistant at SMRT, Erin brings nearly 25 years of organizational experience across K-12 and higher education institutions, as well as volunteer organizations.
Erin earned a BS in Child and Family Studies from the University of New Hampshire.
Doug serves as Director of Housing Practice, bringing extensive experience in operations, business and project management, team leadership, and the design, and commissioning of mechanical, electrical, plumbing, and fire protection systems. He began his career in the MEP/FP industry at Petersen Engineering, now an SMRT company, and went on to hold senior leadership roles in engineering and commissioning organizations before returning to Petersen to help lead the firm’s growth and development.
Doug earned a BS in Chemical Engineering from the University of New Hampshire and an MS in Organizational Leadership from Southern New Hampshire University, where he received the Outstanding Student Award. He is a licensed Professional Engineer in Massachusetts and New Hampshire, a LEED Accredited Professional, and a Certified Passive House Consultant.

As Director of Engineering, James brings four decades of experience in engineering integrated building mechanical systems. He founded Petersen Engineering, inc., now an SMRT company, and continues to connect MEP/FP systems with building science, building enclosures, and integrative design processes, aligning technical performance with the priorities of building users, clients, and owners. James has served as Principal-in-Charge on 70 large-scale Passive House projects.
James currently serves as President of Passive House Massachusetts and sits on the HCA Portsmouth Hospital Board of Directors, advocating for high-quality community health care.

As Lead Electrical Designer at SMRT, Mark works directly with clients and oversees electrical engineering work to ensure project goals are met, coordinating with design teams and contractors to resolve construction challenges. He brings over 20 years of experience in electrical engineering across a broad range of markets, including multifamily residential, hospitality, college and university, commercial, retail, and healthcare.
As Plumbing and Fire Protection Design Engineer at SMRT, David brings experience in plumbing engineering spanning higher education, healthcare and multifamily housing markets, beginning his career in Philadelphia. He takes a holistic approach to building design, with a focus on water conservation and smart energy use. He enjoys working with all trade partners and looks for a solution that is a win-win for all parties involved.
David holds a degree in mechanical engineering from Drexel University.
As Senior Mechanical Engineer, Andrew brings twelve years of mechanical engineering and design experience, with an emphasis on multi-family residential alongside commercial, industrial, laboratory, and healthcare projects across the east coast. He joined the team through Petersen Engineering, now an SMRT company, and focuses on energy-efficient, high-performance building design.
Andrew holds a BS in mechanical engineering from the University of Massachusetts Dartmouth. He is a licensed Professional Engineer in Massachusetts and a Certified Passive House Consultant.
As Project Management Leader of the Housing Practice at SMRT, Christine brings more than a decade of experience spanning mechanical systems design, regulatory compliance, and project management in the power generation field before joining Petersen Engineering, now an SMRT company. Her background across engineering and project management allows her to bridge technical discussions across disciplines and levels of expertise.
Christine holds a BS in chemical engineering from Worcester Polytechnic Institute and is a licensed Professional Engineer in New Hampshire.