What iENG Design does

iENG Design is a private mechanical engineering and design firm headquartered in Chesterfield, Missouri, providing engineering, digital modeling, construction support, commissioning, and industrial refrigeration services to construction firms, building owners, and Fortune 500 enterprises. The company specializes in design-build and design-assist delivery for large-scale industrial and commercial facilities across data centers, healthcare, manufacturing/industrial, food & beverage, science & technology, and commercial verticals. Service execution is anchored in Virtual Design & Construction (VDC) and Building Information Modeling (BIM), including 3D laser scanning, spatial coordination, spooling drawing development, and bill of materials generation that feed prefabrication and modular construction workflows.

The firm's offering is organized around five service lines: Engineering & Design Services (HVAC, piping, plumbing, fire protection, process systems), Digital Modeling & Design (VDC/BIM), Construction Support (cost estimating, procurement, 3D progress scanning, scheduling), Commissioning (engineering review, startup sequencing, functional testing, QA inspections), and Industrial Refrigeration (custom refrigeration system design, automation/control integration). Projects cited on its portfolio include a $1B LG Chem cathode facility (Clarksville, TN), a ~$200M Trina Solar/T2 Energy solar panel assembly plant (Wilmer, TX), the Mark Anthony Brewing/White Claw facility, Ford/SK and Ultium EV battery plants, Hithium's $100M lithium battery assembly facility, Lotte Aluminum's $240M cathode foil plant, Vanderbilt UMC, Washington University/Siteman Cancer Center, and Pfizer's BioPlace Lab. iENG operates as a subsidiary of IMI, Inc. and is part of an employee-owned (ESOP) family of companies that also includes icon Mechanical, eagle Controls, and iSuite.

Revenue is generated through project-based professional services fees on design-build and design-assist engagements; pricing is not publicly disclosed and is determined by project scope and complexity. The company pursues customers via direct enterprise field sales, with marketing driven by a website portfolio, project case studies, and industry recognition (including ACBJ Best Places to Work). iENG maintains offices in Chesterfield (HQ), Granite City (IL), Nashville (TN), and Charlotte (NC), serving primarily the Midwest, Southeast, and Mid-Atlantic US.

Name

iENG Design

Legal name

iENG Design

Website

https://iengtobuild.com

Company type

Private

Founded year

2018

Operating status

Operating

Short description

iENG Design is a private mechanical engineering and design firm providing VDC/BIM-enabled design-build services across HVAC, plumbing, process, and refrigeration systems for Fortune 500 clients in data centers, healthcare, manufacturing, food & beverage, science & technology, and commercial sectors.

Ownership category

akta.pro rank

Product category

Mechanical Engineering Services

NAICS

Architectural, Engineering, and Related Services (5413), Architectural Services (54131)

akta.pro primary industry

Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)

akta.pro secondary industries

Architectural Design Services (BPAHAKAA), Office & Corporate Building Construction (IMAFACAA)

Keywords

• Mechanical engineering services
• Design-build construction
• Virtual design construction
• Building information modeling
• HVAC system design

Headquarters

HQ city

Chesterfield

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Design Services: Professional engineering and design services for construction projects, including mechanical, electrical, plumbing, and process systems design. Revenue is generated through project-based fees on design-build and design-assist engagements with construction firms and building owners.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

iENG Design is a mechanical engineering and design firm that provides design-build and design-assist services for HVAC, plumbing, piping, fire protection, and process systems on industrial and commercial construction projects. The firm pairs its core engineering services with Virtual Design Construction (VDC), Building Information Modeling (BIM), 3D laser scanning, prefabrication, and in-house commissioning to deliver constructable, schedule-driven, and energy-efficient mechanical systems across data centers, healthcare, manufacturing, food and beverage, science and technology, and commercial facilities.

Product overview

iENG Design operates as an engineering and design firm offering a unified service portfolio organized around five core service lines. The primary offering is Engineering & Design Services, which encompasses full-service mechanical engineering for HVAC, piping, plumbing, and fire protection systems delivered through design-build and design-assist delivery methods. This core service is enhanced by Virtual Design & Construction (VDC) / Building Information Modeling (BIM) capabilities that enable 3D coordination, prefabrication planning, and detailed spool drawing development. The remaining three services—Commissioning Services, Construction Support Services, and Industrial Refrigeration—function as integrated add-on capabilities that extend the core design offering, providing end-to-end project support from concept through commissioning and operational handover. Together, these services position iENG to deliver complete mechanical engineering solutions for industrial, healthcare, data center, food and beverage, and manufacturing facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Engineering & Design Services Full-service mechanical engineering and design offerings including design-build, design-assist, energy modeling, life cycle cost analysis, load calculations, plumbing system design, process systems, system control design, and stress analysis for commercial and industrial facility owners, construction firms, and developers.
• Virtual Design & Construction (VDC) / Building Information Modeling (BIM) Digital modeling and design services including 3D modeling, BIM coordination, conceptual design, spatial coordination, detailing, and spooling drawing development with bill of materials (BOM) for construction planning and prefabrication, used by construction firms and facility owners to coordinate multi-trade mechanical installations.
• Construction Support Services Construction support including cost estimating, procurement, 3D progress scanning, and schedule development and cost tracking to ensure projects finish on time and within budget, serving construction firms and building owners during the execution phase.
• Commissioning Services In-house commissioning services including engineering review for functionality and design intent, full commissioning plan development, pre-functional checkout, retro-commissioning, functional testing with penetrant and ultrasonic thickness testing, and quality assurance inspections including certified welding and magnetic particle inspections, delivered to building owners and contractors.
• Industrial Refrigeration Advanced industrial refrigeration solutions including custom refrigeration system design, energy-efficient cooling solutions, and automation and control integration for cold storage and process cooling applications, serving food and beverage processors and industrial facility owners.

Quantifiable outcome

• Delivered 3 GW solar module capacity annually through T2 Energy project
• +4 more outcomes

Named customers16 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• IMI, Inc. (Parent Company)coreOthersiENG is a subsidiary of IMI, Inc., which also owns icon Mechanical, eagle Controls, and iSuite, LLC. The combined business units offer mechanical engineering & design, mechanical construction, installation, service, mechanical controls and building support under a single corporate umbrella. This integration allows iENG to provide seamless design-build services.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Affiliated Engineers Inc. (AEI): AEI is a closely-held MEP engineering design firm specializing in HVAC, plumbing, fire protection, and building systems for complex facilities including healthcare, science & technology, data centers, and industrial. Highly comparable to iENG in service mix, delivery model, and target verticals.
• ESD (Environmental Systems Design): ESD is a privately-held MEP engineering firm delivering mechanical, electrical, plumbing, and technology systems design for mission-critical facilities including data centers, healthcare, and laboratories. Directly comparable to iENG on service scope and high-growth verticals.
• ME Engineers: ME Engineers is a specialized MEP consulting firm providing HVAC, plumbing, and sustainable design for complex facilities including sports venues, cultural buildings, healthcare, and high-rise commercial. Comparable specialty engineering positioning with similar design-build culture.
• Henderson Engineers: Henderson Engineers is a private, employee-owned building systems design firm specializing in MEP engineering for retail, restaurant, healthcare, and industrial clients. Similar employee-owned structure, project-based revenue model, and specialty engineering focus.
• Smith Seckman Reid (SSR): SSR is a privately-held engineering firm delivering MEP, structural, civil, and commissioning services for healthcare, commercial, education, and industrial facilities. Highly comparable to iENG on service breadth including in-house commissioning.
• Jaros, Baum & Bolles: JB&B is a long-standing privately-held MEP consulting engineering firm serving commercial, healthcare, cultural, and mission-critical facilities. Notably, iENG's VP of Engineering Annalise Regan previously led work at JB&B on the World Trade Center and Whitney Museum, making it a strong functional comparable.
• CMTA Inc. CMTA is a privately-held engineering firm focused on energy-efficient mechanical, electrical, plumbing, and technology systems design for healthcare, education, and commercial facilities. Comparable specialty engineering focus with strong energy efficiency value proposition.

Broad incumbents

• Burns & McDonnell: Burns & McDonnell is a 100% employee-owned engineering, construction, and architecture firm serving power, manufacturing, healthcare, and infrastructure clients. A broad incumbent competitor for iENG's larger industrial and manufacturing projects.
• Stantec: Stantec is a publicly-traded global engineering, architecture, and design firm operating across buildings, infrastructure, water, and energy. Competes with iENG for large multi-disciplinary commercial, healthcare, and industrial projects.
• Jacobs Solutions: Jacobs is a publicly-traded global professional services firm delivering engineering, technical, scientific, and consulting services across critical mission solutions and infrastructure. Represents a broad incumbent competing for the largest industrial, data center, and advanced manufacturing projects.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/ieng-design

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 iENG Design