Grounded. Honest. Accountable.
We Take Client Outcomes Personally.
Behind every infrastructure solution is a coordinated team of GHA engineers, planners, analysts, and specialists invested in client success. Together, we connect expertise across disciplines to create lasting infrastructure solutions.

Wider Perspective. Stronger Outcomes.
We design solutions around how infrastructure will actually be used and maintained over time. This broader perspective helps clients uncover opportunities, make informed decisions, and avoid costly surprises later.
Number of Co-Owners
Expertise across dozens of markets and services helps infrastructure systems work better together.
Percent of Fully Vested Co-Owners
Long-term relationships create a more seamless experience and deeper understanding of client needs.
Office Locations
Local presence in the communities we serve helps us stay accessible and responsive.
Get to Know Us
Interns turned leaders. Licensed engineers. Former public sector professionals. Coaches, volunteers, mentors, and trusted experts in their field. Meet some of the co-owners who support clients from concept through completion and beyond.
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Anika Moore, MAIO
C.P.O. / Director of AdministrationVernon Hills, Schaumburg
MAIOAnika Moore brings a proven track record of success to her leadership roles as Chief People Officer and Director of the Administration Division at GHA. She is a passionate 'Wheel of Fortune' fan, reflecting her knack for solving puzzles and embracing challenges. Her love of trivia nights highlights her collaborative spirit and enjoyment of working together to solve problems.
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Arthur Penn, P.E.
Board Member – President & Treasurer / C.O.O.Vernon Hills, Schaumburg
P.E.Arthur Penn is a four-time champion of GHA's highly competitive chili cook-off and serves as President and COO of GHA. With more than 20 years of dedicated service, Arthur's leadership and expertise have been instrumental in driving GHA's growth and success. His ability to combine industry knowledge, strategic vision, and management skills ensures GHA's continued excellence.
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Brian Wesolowski, P.E., CFM
Director of Civil DesignVernon Hills
P.E., CFMBrian Wesolowski began his journey at GHA as an intern in 2007, moving to a full-time position in 2010. His love for culinary exploration reflects the creativity and precision he brings to his work. Just as a chef carefully crafts each dish, Brian applies the same dedication and attention to detail in his site design services.
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Carissa Smith, P.E.
Service Lead – Village EngineeringVernon Hills
P.E.Carissa Smith has been with GHA since 2003, interning for three years before joining full-time. A graduate of Purdue University with a B.S. in Civil Engineering, she later earned her MBA in 2015. From 2006 to 2016, Carissa led GHA's Summer Internship Program. A lifelong soccer player, her love for the game reflects her approach to work—focused, collaborative, and goal-oriented.
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Dan Brinkman, P.E., PTOE
Senior Project Manager – Phase I & Traffic StudiesVernon Hills
P.E., PTOEDan Brinkman has been at GHA since starting as an intern in 1994 and moving full-time in 1996, dedicating his career to traffic studies and Phase I transportation planning. He brings attention to detail developed while driving a Zamboni at an ice rink, which demanded careful planning and a steady approach. He holds a bachelor's degree in Civil Engineering from the University of Illinois at Chicago.
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Dan Strahan, P.E., CFM
Market Lead – MunicipalVernon Hills
P.E., CFMDan Strahan has built a 20-year career at GHA, starting as an intern in 2001 and growing into his role as Municipal Market Lead, delivering tailored engineering solutions. A graduate of Northwestern University, Dan walked on to the football team during his freshman year, dressing for home games against Michigan's Tom Brady and Purdue's Drew Brees—demonstrating the determination that continues to shape his work.
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Darren Monico, P.E.
Market Lead – MunicipalVernon Hills
P.E.Darren Monico combines decades of engineering experience with a passion for building stronger communities. His career includes municipal engineering, consulting, and land development. Darren's enthusiasm for running and cycling mirrors his approach to engineering—focused, forward-thinking, and always striving for the next goal.
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David Marquardt
Board Member – Secretary / Director of Construction & SurveyVernon Hills
Dave Marquardt leads GHA's Construction and Survey department with 25 years of hands-on experience. An avid Rolling Stones fan, Dave has attended over 20 concerts in six different states. This passion for artistry is reflected in his work at GHA, where he combines appreciation for artistry and precision to deliver exceptional results on every project.
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Donald Dixon, P.E.
PrincipalSchaumburg
P.E.Donald Dixon has dedicated more than two decades to GHA. His entry into engineering was influenced by his father, a Utility Contractor in South Carolina, who introduced him to construction blueprints. At GHA, his deep-rooted understanding shapes his methodical approach, ensuring each project is executed with precision and innovation.
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Donald Matthews, P.E., CFM
Board Member – Vice President / Principal / Market Lead – HealthcareVernon Hills
P.E., CFMDonald Matthews began his journey with GHA as a student intern in 1986, advancing to full-time in 1988, and now serves as Vice President and Principal. His expertise in site design and water resources management has helped GHA establish itself as an industry leader. In his free time, Don plays rat hockey, with the same focus and dedication he demonstrates in his work.
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George Whitten
CAD ManagerVernon Hills
George Whitten has been an integral part of GHA since 1987, being among the original seven members of the team. Under his guidance, the CAD standards GHA employs today were developed and refined. A member of a 2-time national champion cross-country team in high school and an all-state runner, George's athletic drive elevates GHA's technical methodologies with unmatched precision.
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Gregory Newton, GISP
Director of Geospatial ServicesVernon Hills
GISPGreg Newton brings more than 11 years of expertise to his role as Director of Geospatial Services at GHA. He has a hidden talent—spending 3 years traveling the country as Ringo in a Beatles tribute production. His passion for geospatial services and unique creative background blend seamlessly, allowing him to provide innovative solutions and valuable insights to clients.
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Jarett Giesey
Data Collection Project ManagerVernon Hills
Jarett Giesey started at GHA as an intern in 2007 before joining full-time. He has completed projects in every state between the Appalachians and the Rockies and beyond. Outside of work, Jarett is passionate about cooking and smoking foods—a hobby requiring patience, precision, and careful planning that translates directly into his work at GHA.
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Jonathan Past, PLS
Senior Project Manager – Land SurveyingVernon Hills
PLSJonathan Past acquired his professional licensure in Land Surveying in July 1999. Serving as GHA's Senior Surveyor and Land Survey Services Manager, his attention to detail and experience have significantly elevated the company's land survey services. He has a lifelong involvement with Native American culture as a member of the Ho-Chunk Bear Clan and Heylushka society.
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Julie Shiflett
Board Member – Independent DirectorJulie Shiflett serves as an Independent Director on GHA's Board, providing independent oversight and governance to the organization.
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Kevin Belgrave, P.E., PTOE
Senior Project Manager – Phase II ProjectsVernon Hills
P.E., PTOEKevin Belgrave serves as Senior Project Manager for Phase II Projects at GHA, bringing professional engineering and traffic operations expertise to the planning and delivery of Phase II transportation projects.
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La’Citia Johnson
Senior HR ManagerVernon Hills
La'Citia Johnson is a dedicated Senior HR Manager with a passion for supporting employees. She plays a crucial role in fostering a positive and inclusive work environment. Outside the office, she indulges her curiosity in true crime podcasts and documentaries. Her ability to dissect complex narratives mirrors her HR approach, which emphasizes thorough understanding to foster fairness and balance.
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Leo Morand, P.E.
Board Member / Director of Business DevelopmentVernon Hills
P.E.Leo Morand, Director of Business Development, began at GHA as an intern before moving full-time in 2002. His passion for motorsports, specifically NASCAR, mirrors the dynamic and fast-paced environment he manages. Just as a racecar driver navigates twists and turns, Leo guides the Business Development Division with finesse, ensuring every project is handled with integrity and attention to detail.
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Lucas Deferville
Asst. Director of ConstructionVernon Hills
Lucas Deferville, Assistant Director of Construction & Survey Services, has been a valued team member since 2000, starting as a high school intern and becoming full-time in 2005. Outside of work, Lucas is passionate about lawn care and gardening, meticulously tracking plant care with an Excel spreadsheet—reflecting the precision and care he brings to his work at GHA.
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Matthew Turk, P.E.
Director of Transportation ServicesVernon Hills
P.E.Matt Turk brings his passion to GHA as Director of Transportation Services. Beyond engineering, Matt has honed his craft in pie baking—for over a decade participating in countless contests and perfecting his crimping techniques. His dedication extends to GHA, where he applies the same precision and creativity to deliver exceptional results in transportation services.
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Mei Zhu, P.E., CFM, LEED AP
PrincipalVernon Hills
P.E., CFM, LEED APMei Zhu has been an integral part of GHA for more than two decades. With master's degrees from both China and Louisiana State University, she is a respected leader in water resource engineering. Active in her local school district's Chinese community, Mei organizes annual cultural events. Her personal travels spanning 38 states and 30 national parks parallel her professional journey of exploring new terrains and pioneering solutions.
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Michael Grinnell
Director of Public Works OperationsVernon Hills
Michael Grinnell brings more than two decades of management experience in the public works sector to his role as Director of Public Works Operations. A skilled woodworker, Michael's dedication to his craft reflects the same commitment and precision he brings to GHA. When not devising innovative solutions or woodworking, he's often found fishing with his grandkids.
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Michael McFarlin
Marketing ManagerVernon Hills
Michael McFarlin joined GHA in 2023 and brings a wealth of marketing and communication skills to the firm. He credits his best and most creative ideas to his kids, who always bring a fun and fresh way of seeing the world. In his spare time, he enjoys reading and playing from his extensive collection of board games.
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Michael Orlandino, CPA
Director of FinanceVernon Hills, Schaumburg
CPAMike Orlandino joined GHA in June 2024 as Controller, bringing a strong background in accounting and finance. A lifelong sports enthusiast, his experience playing and coaching sports has shaped his approach to work—valuing strategy, teamwork, and focus. Whether scorekeeping for his daughter's teams or coaching his son's soccer, the same attention to detail is reflected in his role at GHA.
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Michael Warner, P.E., CFM
Principal / Market Lead – Water ResourcesVernon Hills
P.E., CFMMichael Warner joined GHA in January 2021, bringing 36 years of experience including serving as Executive Director of the Lake County Stormwater Management Commission. Outside of work, Michael's passion for skiing is a reflection of his approach to new challenges—having skied at 47 resorts worldwide, he attacks moguls with the same fearless enthusiasm he brings to professional pursuits.
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Nataliia Dushkevych, MBA
Accounting ManagerVernon Hills
MBANataliia Dushkevych earned her Bachelor's in Finance & Banking in Kyiv, Ukraine, before earning a Master's in Accounting from Chicago's Keller Graduate School. Just as she fluently transitions between English, Ukrainian, and Polish, Nataliia adeptly steers GHA through its financial operations. The balance she achieves in yoga mirrors her precision in balancing GHA's books.
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Rinku Patel, PharmD, RPh
Board Member – Independent DirectorPharmD, RPhRinku Patel serves as an Independent Director on GHA's Board, providing independent oversight and governance expertise to the organization.
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Ross Haseman, P.E., PTOE
Project Manager – Traffic Signal Design & SCAT ProjectsVernon Hills
P.E., PTOERoss Haseman joined GHA as an intern in 2006, starting full-time in 2010, and has focused on improving traffic flow as Senior Signal Systems Engineer. With a master's degree in Transportation Engineering from Purdue University, he approaches signal design with the same mindset he brings to hiking and backpacking—careful planning, attention to detail, and an eye for reaching destinations efficiently.
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Todd Gordon, P.E.
Board Chair / C.E.O.Vernon Hills, Schaumburg
P.E.Todd Gordon began his journey with GHA as a Municipal Engineer in January 2000 and has since risen to CEO. An avid basketball player with a lifelong love for the game, Todd's drive on the court mirrors his professional trajectory. This passion has shaped his competitive nature and strategic thinking, leading GHA to continued success and recognition in the industry.
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Tom Rychlik, P.E.
Market Lead – Parks & RecreationVernon Hills
P.E.Tom Rychlik brings 28 years of experience in municipal, park district, commercial, and residential projects to his role as Market Lead for Recreation. A fan of gaming, sailing, and creative hobbies, Tom approaches projects with the same planning and problem-solving skills he enjoys outside the office. He earned a civil engineering degree from Iowa State University and an MBA from Lake Forest Graduate School of Management.

The GHA Way
The GHA Way is our proactive and personalized approach to working with clients. We stay grounded in client priorities, communicate honestly, and are personally invested in outcomes. The result is infrastructure that works how it should—today and over the long term.
Employee Owned
GHA is an employee-owned company where co-owners treat client priorities as their own. This ownership creates a work environment where integrity and excellence are not just expected but are a natural outcome of our company culture.
Careers
People come to GHA to do meaningful work and stay because they continue to grow. With learning and development guided by clear career pathways and a culture that empowers people to be themselves, GHA is where people build rewarding careers.