Elizabeth “Izzy” McAlister, EI

Project Manager

A Florida native and University of Florida graduate, Izzy McAlister is an engineer driven by a passion for building infrastructure that strengthens communities and improves daily life. She brings a strong technical foundation in stormwater management, utilities, and land development, along with experience managing complex projects from design through permitting and construction.

Before joining Bayer United Engineering Consultants, Izzy served as a Project Manager and Engineer on a wide range of public and private projects across North Florida. Her work has included campus infrastructure improvements for the University of Florida, watershed and stormwater management planning, and award-winning community park developments in Gainesville. She has also contributed to roadway, utility, and site design projects, gaining hands-on experience with permitting, construction coordination, and stakeholder engagement. This diverse background gives her a broad perspective that now enhances her roadway engineering work.

At Bayer United, Izzy is expanding her expertise in roadway design, where she combines her problem-solving skills, regulatory knowledge, and collaborative approach to deliver safe, efficient, and sustainable transportation solutions. She is currently pursuing her Professional Engineer licensure and is committed to advancing both the technical and human sides of engineering.
When she’s not engineering, Izzy can often be found fishing, exploring Florida’s wild places, tending her garden, or enjoying creative hobbies like painting, sewing, and cooking.

Education

Bachelor’s of Science in Civil Engineering (BSCE) 2017
University of Florida (UF)

Affiliations

  • American Council of Engineering Companies (ACEC)
  • Florida Stormwater Association (FSA)

Alma mater

Our Team

Allie Stanley, PE

Roadway Engineer

Allie Stanley, PE, is experienced in horizontal and vertical roadway design, maintenance of traffic design, and has a passion for 3D modeling. Project Experience Allie has experience in a variety of projects ranging from major highway and interstate reconstruction projects to minor intersection and pedestrian improvement projects. She specializes in roadway and pedestrian facilities design […] Read More

Mark Bayer, PE

President, Senior Roadway Engineer, Project Manager

Mark Bayer, PE, has extensive experience in roadway design, maintenance of traffic design, drainage design, utility coordination, project management, and contract management. Project Experience Mark’s project experience includes major roadway reconstruction projects, such as widening from two lanes to four lanes, and minor design projects, including intersection improvements, resurfacing, sidewalks, and trail projects. His projects […] Read More

Sarah Wright, PE

Vice President, Roadway Project Manager

Sarah Wright, PE, has extensive roadway horizontal and vertical design experience, including maintenance of traffic design and utility coordination. Project Experience Sarah’s project experience includes minor design projects such as intersection improvements, resurfacing, sidewalks, and trails and major reconstruction projects such as widening from two lanes to four lanes. She has experience in all phases […] Read More

Gary Gaiotti

Chief Roadway Designer

Gary Gaiotti has more than four decades of experience in the civil field, beginning his career as a Survey Rod Man, then Party Chief, and then Roadway Design. Project Experience Gary has worked extensively with the Florida Department of Transportation within Roadway Design on projects that include: design and plans production of multiple disciplines, including […] Read More

Zachary Cross, PE

Drainage Engineer

Zachary Cross, PE, is an experienced stormwater management designer. His drainage design experience includes dry and wet treatment, storm sewer design for urban and suburban roadways, ditch design for rural roadways, design highwater analysis, pond siting analysis, cross-drain analysis, drainage reports, flooding investigations, environmental resource permitting, basin analysis, stormwater management facility design and modeling, and […] Read More

Tim Easley, PE

Roadway Engineer

Tim Easley, PE, has experience in many facets of transportation design, including new construction, widenings, rehabilitation projects, and intersection improvements. He enjoys working with others to create innovative designs and learning new methods and strategies to improve his engineering skills. Project Experience Tim’s project experience includes major roadway reconstruction projects, such as widening from two […] Read More

Robin Crawford

Project Coordinator

Robin Crawford has 8 years of experience as a project coordinator. Her experience includes contract management, invoicing, preparing audit packages, and reviewing and maintaining financial records for projects. Robin is a Florida native still currently residing north of Gainesville. In her free time, she enjoys spending time with her husband and 2 children, traveling and […] Read More

Afton Bayer

Business Administrator

Afton Bayer graduated from the University of South Florida with a Bachelor of Science degree in Nursing . She practiced for 13 years as a RN in the Emergency Room and Preop and PACU. When Bayer United opened, she left her passion in medicine to help Bayer United in their vision to grow.   Afton […] Read More

Marcello Tavernari, PE

Senior Project Manager

Marcello Tavernari, PE has extensive experience in various roles and responsibilities in the Roadway, Drainage, Utility, and Civil Engineering/Construction fields. Marcello’s experience includes managing and coordinating funding, planning, design, permitting, and construction activities for public roadway, stormwater, and utility projects. He ensures all project deliverables related to public safety, quality, cost, schedules, and public transparency […] Read More

Priscilla Buchanan

Project Coordinator Assistant

Priscilla has been a project coordinator since 2017. Her experience includes contract management, invoicing, and reviewing and maintaining project financial records. She graduated from the University of Texas with a Bachelor of Liberal Arts in Linguistics. Priscilla was born in Florida but currently resides in Colorado and loves it. Aside from spending time with her […] Read More

Richard Endrzejewski, PE

Senior Engineer / Project Manager

Rich’s extensive project experience includes maintenance of traffic design, utility coordination, project and contract management, major and minor roadway reconstruction projects, including intersection improvements, resurfacing, sidewalks, and trail projects. His projects involve safety improvements, drainage improvements, signing and pavement marking, signalization, lighting, structures, geotechnical, environmental impacts, permitting, traffic control, specifications, quality control, and post-design services. […] Read More

Anna Holloway

Engineering Intern

Anna Holloway joined Bayer United Engineering Consultants in 2025 after graduating from the University of Notre Dame with a degree in Aerospace Engineering. During her time at Notre Dame she completed several hands-on projects, including designing and building a scale model bridge to support structural loads and being a part of a senior design team […] Read More

Andrew Geisel, PE

Project Manager, Office Manager

Drew Geisel, PE has experience in all stages of project development from design to construction management to construction inspection and closeout. His design experience is the most extensive including multiple shared-use paths, roundabouts, intersection improvements, streetscapes, local road extensions, and resurfacing for all functional classifications of roadways. These projects include many complicated traffic control plans, […] Read More