Oakland

As a performance-driven and client-focused professional, Joseph is dedicated to employing the principles of building science to improve building enclosures.

He is well-versed in many of the services RDH provides on New Buildings and Existing Buildings projects. He possesses a broad knowledge of industry best practices as prescribed by ASHRAE and ASTM as well as national, state, and local building codes on the performance standards relating to energy efficiency and moisture control.

Joseph holds a bachelor’s degree in physics and completed his master’s in architectural engineering with a structural major.

Sasha is a Façade Structural Specialist with 30 years of experience working on a wide range of structural systems and building facades. He has provided his expertise on a number of high-profile projects in the San Francisco Bay Area, including the Oakland Cathedral and Sutter Hospital.

Sasha is often called upon to review the structural design of complex glazing systems and to provide structural evaluations and assessments of buildings. He also conducts forensic investigations of structural failures and designs solutions for building repairs.

Sasha uses an in-depth understanding of how seismic activity affects the structural integrity of buildings to provide earthquake risk analysis and seismic retrofits to existing buildings. He is a recognized Safety Assessment Program (SAP) Evaluator for the State of California Office of Emergency Services and is designated to perform rapid assessments of building safety in the wake of an emergency.

As well as being a LEED Accredited Professional (LEED AP), Sasha is a qualified Structural Engineer (SE) in 20 states throughout the U.S., including California, Washington, Oregon, and Nevada.

Colin is a Professional Engineer in the United States and Canada and provides operational and project leadership in the San Francisco Bay Area office.

Colin has a broad knowledge of building construction and applies building science principles to analyze and design durable, energy-efficient building enclosures. He shares his experience by regularly speaking about topics related to building enclosures at events across the United States and contributes to industry organizations with the aim of making buildings better.

Colin began his career with RDH in Vancouver before transferring to the San Francisco Bay Area and now plays a key role as part of the leadership team for our California operations.

As a Senior Project Manager, Megan has 9 years of work experience on existing, historic and new buildings projects.

She has prepared design documents for existing and historic building rehabilitations. She is experienced in design and construction of new construction wood-framed multifamily developments and high-rise panelized and unitized curtain wall projects. She has performed numerous glazing and façade manufacturing inspections domestically and overseas.

She contributes her knowledge in the industry through presentations and serves as the Past President of the Northern California Chapter of the International Institute of Building Envelope Consultants (IIBEC).

Megan joined RDH Vancouver in 2012 as a co-op student during her undergraduate studies at the University of Waterloo. She transferred to the RDH San Francisco Bay Area office in 2016.

Harriet leads the firm’s marketing and communication initiatives. Her team is central to unlocking growth opportunities that align with RDH’s expertise and values. The marketing team works collaboratively with practitioners, blending strategy with creativity to tell compelling stories about our work, people, and capabilities.

Her core strengths lie in her ability to simplify complex problems, develop thoughtful approaches, and translate needs into impactful, creative solutions.

Felix advances complex façade and glass design at RDH out of our Oakland office. He is a highly creative engineer and experienced team leader with over 15 years of experience in façade consulting and structural engineering.

Trained as both a structural engineer and an architect, Felix has a passion for solving complex challenges, engaging with innovative technologies, and conducting research and development. He is comfortable working on all stages of a project, from conceptual design to detailed design and engineering through to realization. He has also worked on the development and testing of new products for the building industry and is an experienced lecturer.

Felix enjoys designing structures and façades influenced by individual materials or products. He has worked with many cladding types and specializes in structural façades, structural glass, complex geometry structures, and uncommon building materials such as ETFE and fiber-reinforced polymers.

Prior to joining RDH in 2021, Felix led the façade group at Arup and worked on a broad variety of projects in the San Francisco Bay area and London. He served as team leader on many award-winning projects with renowned architects and contributed to more than 250 international projects.

Tammy has ten years of professional experience as a project manager and engineer including investigation, design and construction administration of existing building envelopes and historic structures. Her experience in new construction includes modular construction and mass timber construction along with other traditional building types.

In previous employment, Tammy provided litigation support services for projects within the San Francisco Bay area through investigative fieldwork. She joined the Oakland RDH office in January 2015, and her experience in the field, coupled with her background in Civil Engineering Project Management and Materials Science, is a great asset to RDH.