What ESI Consultants does

ESI Consultants is a US-based professional services firm headquartered in Naperville, Illinois, founded in 2003. The firm provides planning, design, construction, infrastructure, environmental, and engineering services to its clients, operating in a domain that overlaps with municipal infrastructure, built-environment, and environmental consulting practices common in the Chicago metropolitan area and broader Midwest market.

Per the available firmographic data, ESI Consultants is a privately held for-profit entity with a workforce in the 11-50 employee range. Leadership includes Joe Chiczewski as President and CEO. The firm operates from a Naperville base with a web presence at eco-solinc.com, suggesting its service mix includes ecological or environmental-adjacent work alongside core planning, design, and engineering offerings.

Detailed information on revenue, customer base, specific projects, partnerships, M&A activity, geographic footprint beyond the Naperville headquarters, and technology stack is not present in the provided data. As a result, this description reflects only the explicitly disclosed firmographic attributes; deeper operational, financial, and competitive positioning claims are not supportable from the input.

Name

ESI Consultants

Legal name

Gonzalez Companies, LLC

Website

https://eco-solinc.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

11–50 employees

Short description

ESI Consultants is a Naperville, Illinois-based professional services firm founded in 2003 that provides planning, design, construction, infrastructure, environmental, and engineering services, led by President and CEO Joe Chiczewski.

Ownership category

akta.pro rank

Product category

Civil Engineering Services

NAICS

Engineering Services (54133), Architectural, Engineering, and Related Services (5413), Environmental Consulting Services (54162)

SIC

Services-Engineering Services (8711), Services-Management Consulting Services (8742)

akta.pro primary industry

Industrial & Process Engineering Consulting (BPAHAIAF)

akta.pro secondary industry

Sustainability & ESG Consulting (BPAHACAK)

Keywords

• Civil engineering services
• Infrastructure consulting
• Environmental engineering
• Construction management
• Planning and design

Headquarters

HQ city

Naperville

HQ country

United States

HQ region

North America

Offices14 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Professional Services - Civil Engineering: Project-based civil engineering and construction management services including planning, design, construction oversight, and maintenance. Revenue generated through consulting fees, project management contracts, and construction management services for infrastructure projects.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

ESI Consultants provides professional planning, design, construction, infrastructure, environmental, and engineering services. The firm delivers project-based professional services to support infrastructure development and environmental projects from concept through delivery. Headquartered in Naperville, Illinois, the company operates with a small team of 11-50 employees serving client engineering needs.

Product overview

Gonzalez Companies, LLC is a civil engineering and construction management firm that operates as a unified platform offering integrated infrastructure services. The core offerings include Civil Engineering Services and Construction Management, supported by specialized add-on modules for environmental compliance (SWPPP), surveying, geotechnical services, and sanitary sewer evaluation. The company also offers workforce development programs through its Student Internship Program and Youth Mentorship Program. The portfolio is delivered through 15 regional offices across the Midwest, serving municipal, transportation, water/wastewater, and energy infrastructure clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Planning Services Professional planning services for infrastructure, environmental, and engineering projects, supporting clients through early-stage project development and feasibility.
• Design Services Professional design services for infrastructure, construction, environmental, and engineering projects, providing technical design solutions tailored to client specifications.
• Construction Services Professional construction services supporting infrastructure and engineering project delivery, including construction oversight and management.
• Infrastructure Services Professional infrastructure services for civil infrastructure projects, supporting clients with engineering expertise throughout project lifecycles.
• Environmental Services Professional environmental services including environmental assessment and engineering support for projects requiring environmental considerations and compliance.
• Engineering Services Professional engineering services covering multiple engineering disciplines to support infrastructure, construction, and environmental projects.

Quantifiable outcome

• 98%+ client satisfaction rate
• +2 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core and minor.

• FPBH, Inc.coreStrategic or Co-development Partner · 1 April 2025Acquired by Gonzalez Companies on April 1, 2025. FPBH is a civil engineering and environmental firm headquartered in North Vernon, Indiana with offices in Seymour and New Castle, Indiana. Approximately 16 professionals strengthen capabilities in water, wastewater, stormwater, surveying, commercial development, and local agency (roadway) projects. This was Trilon's first strategic expansion into Indiana.
• RA ConsultantscoreStrategic or Co-development Partner · 1 August 2024Acquired by Gonzalez Companies on August 1, 2024. RA Consultants is a Cincinnati, Ohio-based infrastructure engineering and construction management consulting firm specializing in water and wastewater projects. Team of engineers, designers, surveyors, and professional construction inspectors helping clients since 2004. Offices in Cincinnati OH, Dayton OH, and Louisville KY.
• Trilon GroupcoreStrategic or Co-development Partner · 1 January 2023Strategic partnership established in 2023 with Trilon Group, a family of infrastructure consulting firms. This partnership broadens Gonzalez's capabilities and expands services. Trilon aims to build a Top 5-10 infrastructure consulting firm by 2030. Gonzalez Companies is Trilon's platform company for growth in the infrastructure consulting space.
• Caritas Family SolutionsminorOthersCommunity partnership supporting Caritas Family Solutions in their 75th Anniversary celebration through playground expansion project. Team members volunteered time and skills to create a safe and enjoyable space for children.
• 17th Street Corridor Neighborhood AssociationminorOthersPartnership for the Gonzalez Mentorship Program supporting students by providing networking and career exploration opportunities with area professionals.

Scale indicators4 records

Peers

• Jacobs Solutions:

Broad incumbents

• AECOM: Global infrastructure consulting firm with major U.S. transportation, water, and environment practices. Competes with Gonzalez on large municipal and DOT programs; serves as both a competitor on primes and a partner on mega-programs.
• WSP USA: Global professional services firm with a large U.S. infrastructure practice covering transportation, water, environment, and buildings. Competes with Gonzalez for municipal and DOT work, especially on larger programs, and offers broader geographic reach and bench depth.
• Stantec: Global design and consulting firm with strong North American infrastructure, water, and environmental practices. Overlaps with Gonzalez in municipal water/wastewater, transportation, and environmental services, especially across the Midwest.
• Tetra Tech: Global consulting and engineering firm specializing in water, environment, and sustainable infrastructure. Directly comparable in environmental/SWPPP, water, and wastewater services, but with significantly larger scale and global reach than Gonzalez.

Direct peers

• HDR, Inc. Omaha-based architecture, engineering, and consulting firm with strong transportation, water, and environmental infrastructure practices serving municipalities and DOTs. Comparable in that it is a Midwest-headquartered, full-service infrastructure consulting firm pursuing similar clients and project types as Gonzalez.
• Kimley-Horn: Employee-owned engineering, planning, and consulting firm with strong transportation, land development, and water practices. Competes with Gonzalez in civil/site, transportation, and municipal infrastructure, with comparable mid-to-large scale and a project-based delivery model.
• TRC Companies: U.S.-based engineering, consulting, and construction management firm with strong infrastructure, environmental, and energy practices serving public and private clients. Comparable in mid-sized infrastructure consulting profile, public-sector orientation, and M&A-driven growth strategy.
• Burns & McDonnell: Employee-owned engineering, construction, and consulting firm headquartered in Kansas City, with deep municipal, transportation, water, and energy infrastructure practices across the U.S. Highly comparable mid-to-large-scale Midwest-rooted infrastructure consulting platform with full project-lifecycle capabilities.

Regional players

• Manhard Consulting: Midwest-based (Illinois) civil engineering, surveying, and consulting firm serving municipal and private clients. Direct regional peer in the Midwest infrastructure-consulting market with similar civil, surveying, and site-development capabilities, though smaller in scale than Gonzalez.

Market position

Strengths5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/gonzalez-companies-llc
• Xx.com/esiconsultants

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ESI Consultants