Explore Engineering Firms Serving Illinois

Review the services of 62 engineering firms in Illinois, including Chicago, Champaign and Decatur. Whether you need design services, technical analysis or consulting support, look for relevant engineers and inquire about availability and pricing.
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Primera Engineers
39 Years
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We offer 35+ years of specialized engineering expertise across multiple disciplines.
Primera Engineers provides comprehensive engineering design and consulting services for buildings, transportation, and utilities across Chicago and beyond. ISO 9001-certified with 35+ years of expertise.
Buildings Transportation Utilities
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DB Sterlin Consultants
28 Years
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We have over 25 years of experience in civil and structural engineering.
DB Sterlin Consultants delivers tailored civil, structural, and utility engineering services across Illinois and Wisconsin. With 25+ years of expertise, we provide construction management, land surveying, and infrastructure solutions focused on client nee
Civil Engineering Structural Engineering Construction Services
We have over 30 years of experience in the fastener industry.
Ability Fasteners offers a comprehensive range of standard and specialty fasteners, components, and custom services to meet diverse industrial needs.
Fasteners & Components Custom Services Packaging
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Mintropy
Emergency
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We offer over 17 years of experience in MEP engineering with a focus on sustainable design.
Mintropy provides sustainable MEP engineering solutions, specializing in mechanical, electrical, and plumbing systems for commercial and industrial projects.
Mechanical Engineering Electrical Engineering Plumbing Engineering
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SPAAN Tech
28 Years
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We offer 25+ years of experience in civil engineering and infrastructure development
SPAAN Tech delivers innovative engineering and construction management services for transportation, water, energy, and aviation infrastructure projects.
Engineering Program Management Innovative Technology Solutions Construction Management
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SKS Engineers
15 Years
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We offer 50+ years of combined engineering expertise across 27 states
SKS Engineers provides civil, structural, and geotechnical engineering solutions across Illinois and 26 other states. With 50+ years of expertise, we deliver tailored infrastructure, land development, and construction quality control services.
Civil Engineering Geotechnical Investigations Structural Design
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Scheflow Engineers
50+ Years
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We offer 54 years of specialized civil engineering experience.
Scheflow Engineers provides transportation systems, stormwater management, and site planning services. Serving Illinois and Wisconsin since 1967 with cost-effective, relationship-driven engineering solutions.
Transportation Systems Stormwater Management Site Planning
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EngineeringPeople
35 Years
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We offer 30+ years of mechanical engineering expertise with patented solutions
EngineeringPeople offers innovative mechanical engineering, product development, and VR/AR/IoT solutions. Trusted by global manufacturers for over 30 years. Contact us today!
Mechanical Engineering Product Development VR/AR/MR Solutions
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General Energy
41 Years
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34 years of expertise in energy efficiency and solar systems.
General Energy Corp offers solar EPC, energy efficiency solutions, and engineering services in Schaumburg, IL. Serving commercial and industrial clients since 1985 with innovative, sustainable designs.
Solar EPC Energy Efficiency Solutions Engineering Services
We have over 25 years of experience in electrical power systems.
Trusted electrical power system solutions in Moline, IL. Midwest Engineering Consultants offers NETA-accredited testing, maintenance, and design services with 25+ years of expertise.
System Studies NERC Compliance Design & Installation