Leadership

Principals

"Mark Thomas is an energetic company where people go to make great projects happen. If you need a project done right the first time, you need Mark Thomas."

Rob Himes, PE

President

A Mark Thomas veteran since 1986, Rob is known for his innovative geometric solutions for complex problems. Rob oversees our firmwide operations as well as manages large, complex transportation and municipal projects throughout the state.

LinkedIn

Rob Himes, PE

President

A Mark Thomas veteran since 1986, Rob is known for his innovative geometric solutions for complex problems. Rob oversees our firmwide operations as well as manages large, complex transportation and municipal projects throughout the state.

LinkedIn

Richard Tanaka, PE

Senior Principal

As a firm principal since 1979, Richard has led and managed some of our most complex and multifaceted projects. His record of excellence in managing and meeting fast-track schedules for projects has brought great financial value to our clients.

LinkedIn

Richard Tanaka, PE

Senior Principal

As a firm principal since 1979, Richard has led and managed some of our most complex and multifaceted projects. His record of excellence in managing and meeting fast-track schedules for projects has brought great financial value to our clients.

LinkedIn

Sasha Dansky, PE, QSD

Principal, Vice President

Sasha’s experience centers on highway and municipal transportation planning and design. His technical background and understanding of the project development process allows him to serve clients at all stages of a project, from conceptual design to preparation of construction documents.

LinkedIn

Sasha Dansky, PE, QSD

Principal, Vice President

Sasha’s experience centers on highway and municipal transportation planning and design. His technical background and understanding of the project development process allows him to serve clients at all stages of a project, from conceptual design to preparation of construction documents.

LinkedIn

Matt Brogan, PE

Principal, Vice President

Matt brings a wide variety of expertise in infrastructure, transportation, and transit projects. He is known for his focus on client service and project delivery, and has demonstrated a strong ability to lead large, multi-disciplined project teams.

LinkedIn

Matt Brogan, PE

Principal, Vice President

Matt brings a wide variety of expertise in infrastructure, transportation, and transit projects. He is known for his focus on client service and project delivery, and has demonstrated a strong ability to lead large, multi-disciplined project teams.

LinkedIn

Shawn O'Keefe, PE, QSD

Principal

Shawn has expertise in the planning and design of active transportation, highway and roadway infrastructure, highway-railroad crossings, and transit facility projects. His experience includes leading master plan preparation through final design.

LinkedIn

Shawn O'Keefe, PE, QSD

Principal

Shawn has expertise in the planning and design of active transportation, highway and roadway infrastructure, highway-railroad crossings, and transit facility projects. His experience includes leading master plan preparation through final design.

LinkedIn

Management Team

Larry Johnson, PLS
Survey Director

Larry’s experience includes Caltrans right of way engineering; control, design, boundary, and topographic surveys; parcel maps; records of surveys; construction staking plans; as built surveys; right of way base maps; appraisal maps; ALTA surveys; and lot line adjustments.

LinkedIn

Zach Siviglia, PE, QSD
Transportation Division Manager

Zach manages the planning and design of freeway, bridges, highway interchanges, local roadway, bicycle facility, civil related transit, streetscape, and downtown infrastructure improvements. He manages all aspects of the project development from preliminary engineering to construction documents.

LinkedIn

Ed Noriega, PE
Transportation Division Manager

Ed manages projects including bridges, local roadway and streetscape improvements, highway interchanges and railroad grade separations. He has experience in all aspects of project development from inception (PSR), to approval (PA/ED), through to design (PS&E).

LinkedIn

Julie Passalacqua, PE
Structures Division Manager

Julie manages all aspects of structures project development, from preparing advance planning studies, retrofit strategy reports, and type selection reports during preliminary engineering to the preparation of PS&E production documents to shop drawing reviews and field investigations during construction. She specializes in HBP funded projects.

LinkedIn

Erik Smith, RLA
Landscape Architecture & Urban Design Division Manager

Erik’s experience has involved a full spectrum of professional services from feasibility studies, master planning, streetscape design and community outreach to construction management. He also leads our team in the development of state and federal grant applications.

LinkedIn

Matt Stringer, PLS, CFedS
Senior Survey Manager

Matt has completed infrastructure land surveying projects throughout California. He assists client with their real estate acquisition, assessing their real property rights, obtaining accurate surveys, and construction projects.

LinkedIn

Eric Fredrickson, PE
Senior Structure Manager

Eric has provided bridge and structural design or review of more than 100 structures across California, including serving as the structures oversight liaison for locally-funded projects in Caltrans Districts 1, 2, and 3 for 15 years.

LinkedIn