The successful practice of architecture is centered upon a holistic approach to design and collaboration, led by knowledge leaders who will stimulate and manage the planning process. Our firm’s principals and associates provide a wide range of industry expertise, with practice backgrounds from around the world.

William A.L. Gaudreau, AIA

CEO | President

Since joining the firm in 1981, Bill has led the firm's science and high technology design practice serving colleges and universities in research and teaching facilities, bioscience and pharmaceutical companies, state and federal laboratories across the country. In 2001, he became the firm president. His experience includes a wide range of research environments, including bio-containment, CGMP clean rooms, animal research facilities and university related research parks. His clients have included Wake Forest Medical Center, Human Genome Sciences, the National Institutes of Health, Consumer Product Safety Commission and the DEA. He holds a NCARB certificate and is a past President of AIA Baltimore.

David G. Gaudreau, AIA

COO | Senior Vice President | Principal

David is the Senior Vice President and Chief Operating Officer of Gaudreau, Inc. He has more than 30 years of experience in the planning and design of facilities for public and private clients. David provides creative design solutions and applies pragmatic management principles to all of his projects. The scope of his experience encompasses complex project types including mixed-use and residential buildings, commercial offices, public and private primary and higher education schools and universities, and sports and recreational complexes. He provides the ongoing leadership necessary to support the technological advancement of our practice. David is also a dynamic community activist, serving as a member, committee chair, or leader for a variety of local and national organizations. Some of his recent clients include Goucher College, Anne Arundel County Public Schools, Building African American Minds (BAAM) and Notre Dame University of Maryland.

James Bartlett, AIA, LEED AP BD+C

Director of Design | Associate Principal

As the Director of Design, Jim joined the firm from Canada in 1997 and has led design teams for significant and complex projects across the country for all of our industries. As a LEED accredited professional, he endeavors to integrate his knowledge into an integrated and holistic approach to energy efficient and sustainable building design. His recent projects have included the awarded Wake Forest BioTech Place in Winston-Salem, North Carolina and the State of Maryland Medical Examiner’s Center in Baltimore, Maryland.

Stephen A. Leonhardt, AIA

Associate Principal

Steve oversees project teams for science and technology facilities and office buildings, and has practiced around the world, including projects for hospitality and resorts. He joined the firm in 2007 and is an Associate Principal and Senior Project Director. Steve is a leader in the community and has served in the Boys Scouts of America for over 20 years. His recent clients have included large and complex projects in the University of Maryland BioPark and Piedmont Triangle Research Park in Winston-Salem, North Carolina.

Richard Williams, AIA, LEED BD+C CDT

Associate Principal

Rich is a registered architect with nearly 40 years of experience. Mr. Williams has extensive experience directing projects from pre-schematic planning through post-construction services.  His vast experience in the design of state-of-the-art science and high-tech laboratory facilities is a great asset to the Gaudreau team. Most recently Rich has worked on projects for Longfellow Real Estate Partners, USDA and the Nationals Institutes of Health.

Margaret (Peggy) Aparicio, CPA

Chief Financial Officer

Peggy has more than 30 years of diverse experience managing accounting and human resources. Her expertise includes corporate accounting, financial reporting and analysis, budgeting and audit requirements. Peggy is responsible for our overall financial planning, and financial operations.

Lisa Julian-Miller, CPSM

Senior Associate / Director of Marketing

Lisa is a senior associate and serves as the director of marketing and business development. She has more than 30 years of experience in marketing architecture and engineering services and works across all the firm’s market sectors to ensure the award of exciting, cutting edge projects. She is an active member and past president of the Society of Marketing Professionals and earned her Certified Professional Services Marketer (CPSM) in 1994.

Marc G. Daemen, AIA

Senior Associate

Marc joined Gaudreau, Inc. in November of 1998 from Canada, and brings experience in a broad range of project types including commercial, institutional, recreational and award-winning residential design. As Senior Associate, Marc has been extensively involved with institutional clients, including the University of Maryland Medical Center, Johns Hopkins School of Medicine and Alexandria Real Estate Equities.

Mark Dininno, RA

Senior Associate

Mark is a registered architect with 35 years of experience. Since joining Gaudreau, Inc. in 1990, Mark has been an invaluable asset to the firm’s science and high technology studio. He has been involved with many of the firm’s complex laboratory projects including projects for Lonza Biologics, Inc., the US Army Corps of Engineers and Human Genome Sciences, Inc.

Tyler Grimshaw, RA

Senior Associate

Tyler is a registered architect with over ten years of experience. Mr. Grimshaw began his professional architectural career here at Gaudreau and has gained experience in site evaluations, feasibility studies, concept design, construction documentation and construction administration. He has recently worked on projects for Wake Forest Baptist Medical Center, Personal Genome Diagnostics, Anne Arundel County Public Schools and The Johns Hopkins University

Grant Jenkin, RA

Senior Associate

Grant is a Senior Associate and Project Manager with work experience in New Zealand, Australia, Malaysia as well as the US. Since joining Gaudreau in 2000, his project experience has included office, mixed-use, academic, research and institutional facilities. His project responsibilities have ranged from design development through construction documentation and construction contract administration. His clients have included the McCormick Spice Company and the Drug Enforcement Agency.

Esra Martin, AIA, LEED AP

Senior Associate

Esra joined Gaudreau, Inc. in 2015 has over 16 years of design and project management experience. Her background encompasses preparation of concept, schematic, and design development plans as well as construction documents for a variety of project types. Project types include: mixed-use, retail, residential, resorts and hotels, office buildings as well as education facilities.

Christopher Taylor, RA

Senior Associate

Chris has 20 years of experience in both the public and private sector. His primary experience includes hands-on team leadership in the development of design and construction documents. He has also assisted with code searches, product selections and presentation materials. He has experience in a broad range of project types and most recently worked on the award winning Wake Forest Biotech Place, Wake Forest School of Medicine and the 525@Vine buildings located in the Wake Forest Innovation Center.

Aaron Thoren, AIA, LEED AP

Senior Associate

Aaron has an extensive portfolio with a wide range of project types incorporating the most appropriate systems and materials resulting in minimal value engineering. He is also LEED Accredited Professional with a great deal of experience in sustainable design. Aaron is fully involved with projects from the beginning design phases to the final stages, delivering the Owner’s desired vision with a keen desire to solve the inevitable obstacles that are encountered on most projects.

Stacy Brian, RA, LEED AP BD+C


Stacy has over 20 years of professional experience working on a broad range of project types. Her experience includes site evaluations, feasibility studies, concept design and construction documentation. She has recently worked on projects for the US Army Corps of Engineers, the National Institutes of Health and the Association of Maryland Pilots.



Euiguem is a project architect and interior designer with Gaudreau with more than 15 years of experience. Her background is in site evaluations, feasibility studies, concept design, interior architecture, project management, and construction documentation and administration. She has worked on a variety of projects including K-12 schools, Higher Education, Laboratory Facilities, Tenant fit-out, and commercial office projects. Along with her being a registered architect, she holds a National Council for Interior Design Qualification certification (NCIDQ) and she is a LEED Accredited professional.

Janet Patterson


Janet is a versatile architect and project manager working on a variety of project types including new construction and renovation. She is experienced in all facets of the programming, design, and construction process. Janet has great attention to detail and produces high quality construction documents while always maintaining a focus on the client’s vision and objectives. She primarily works on commercial, sports and recreation, and science and technology projects.

Erin Reinhart, AIA, LEED AP BD+C


Erin has nearly 20 years of architectural experience in a broad range of project types and is the LEED specialist at Gaudreau. Most recently, Erin served as the Project Manager for two of the National Institutes of Health’s largest office re-leasing projects in over 20 years. She developed the Program of Requirements which consolidated 15 different NIH agencies (2,700 NIH employees) in five separate office buildings into a 500,000 sf, two facility complex.