Company lists · Data refreshed October 2026

Top 25 Front-end engineering design services based in the United States

Name: Front-end engineering design services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 25, 2026 415 companies tracked

RevenueBase identified 415 company matches for front-end engineering design services associated with the United States as of October 2026 and tracks 7,204 professional contacts across them, including 2,695 with verified work emails. Houston is the largest hub.

This list covers company matches for front-end engineering design services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 25, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 25, 2026 How this list was built

415Companies

7,204Contacts tracked

2,695Verified emails

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The 25 largest front-end engineering design services based in the United States

Ranked by team size

Top 25 of 415 company matches for front-end engineering design services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 25, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Optimized Process Designs LLC	Exact match	Katy, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	452 contacts →
	Exact match “Established in 1980, Optimized Process Designs LLC (OPD) provides clients with detailed engineering packages in all disciplines, single-point procurement for all equipment and…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
2	C&i Engineering	Exact match	Louisville, KY, United StatesHQ recorded Oct 25, 2026	201-500	325 contacts →
	Exact match “Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
3	Dynamic Engineering Consultants, PC	Exact match	Lake Como, NJ, United StatesHQ recorded Oct 25, 2026	201-500	303 contacts →
	Exact match “Full Service Land Development and Consulting Dynamic Engineering Consultants, PC provides comprehensive Professional Engineering and related services to the Land Development…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
4	Ambitech Engineering	Exact match	Downers Grove, IL, United StatesHQ recorded Oct 25, 2026	501-1,000	224 contacts →
	Exact match “Ambitech is a full-service provider of engineering design services with deep expertise in Front-End Loading (FEL/FEED) work.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
5	Waldemar S. Nelson & Co., INC	Exact match	New Orleans, LA, United StatesHQ recorded Oct 25, 2026	201-500	220 contacts →
	Exact match “For over a half century our professional staff - in meeting technical, schedule, budget, and regulatory requirements - has successfully completed projects in the U.S.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
6	Krazan & Associates, INC	Exact match	Clovis, CA, United StatesHQ recorded Oct 25, 2026	201-500	192 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
7	Carroll Daniel Engineering	Exact match	Greenville, SC, United StatesHQ recorded Oct 25, 2026	201-500	145 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
8	Allied Engineering	Exact match	Portland, ME, United StatesHQ recorded Oct 25, 2026	11-50	139 contacts →
	Exact match “Allied Engineering (AEI) is now Salas O'Brien.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
9	Corbin Consulting Engineers	Exact match	Hillsboro, OR, United StatesHQ recorded Oct 25, 2026	51-200	123 contacts →
	Exact match “Corbin Consulting Engineers, Inc.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
10	NY Engineers	Exact match	Miami, FL, United StatesHQ recorded Oct 25, 2026	51-200	121 contacts →
	Exact match “One of America’s fastest-growing companies NY Engineers is an engineering design firm with expertise in Mechanical, Electrical, Plumbing, Sprinkler Engineering, Fire Protection…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
11	Orion Engineers Constructors	Exact match	Baton Rouge, LA, United StatesHQ recorded Oct 25, 2026	51-200	110 contacts →
	Exact match “Orion has the ability to meet your every engineering need from determining the feasibility of your project right through to full EPC, commissioning and startup of industrial…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
12	Gulf States Engineering, INC	Exact match	Mobile, AL, United StatesHQ recorded Oct 25, 2026	51-200	97 contacts →
	Exact match “At Gulf States Engineering, Inc.(GSE), we offer comprehensive services encompassing every stage of an engineering project's life cycle.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
13	ME Engineering, P.C., Mechanical & Electrical Engineering	Exact match	Rochester, NY, United StatesHQ recorded Oct 25, 2026	51-200	94 contacts →
	Exact match “M/E Engineering, P.C.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
14	BLW Engineers	Exact match	Littleton, MA, United StatesHQ recorded Oct 25, 2026	51-200	89 contacts →
	Exact match “BLW Engineers is a consulting engineering firm providing design related services for Mechanical and Electrical building systems.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
15	R.W. Sullivan Engineering	Exact match	Boston, MA, United StatesHQ recorded Oct 25, 2026	51-200	81 contacts →
	Exact match “R.W.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
16	HPF Consultants, INC	Exact match	Midland, TX, United StatesHQ recorded Oct 25, 2026	11-50	78 contacts →
	Exact match “HPF Consultants is an engineering and design firm located in Midland, Texas that has served the Oil and Gas industry for more than 30+ years.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
17	Pickering Associates, INC	Exact match	Parkersburg, WV, United StatesHQ recorded Oct 25, 2026	51-200	77 contacts →
	Exact match “Pickering Associates is a well-aligned team of professional architects, engineers, and surveyors with a diverse depth and breadth of knowledge.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
18	Olson Engineering, INC	Exact match	Bridge City, TX, United StatesHQ recorded Oct 25, 2026	51-200	76 contacts →
	Exact match “With safety at the forefront of our business, we employ highly skilled engineers, designers and support staff in-office and in-plant to deliver quality projects on time and on…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
19	Dotec Professional Corporation	Exact match	Saint Charles, United StatesHQ recorded Oct 25, 2026	51-200	75 contacts →
	Exact match “DOTec is a professional engineering company founded in 1995 by Dr.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
20	Applied Engineering Services	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 25, 2026	11-50	72 contacts →
	Exact match “Applied Engineering Services is an Indianapolis-based consulting engineering firm providing mechanical, electrical, and instrumentation engineering services.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
21	Wilson & Girgenti	Exact match	Tampa, FL, United StatesHQ recorded Oct 25, 2026	51-200	70 contacts →
	Exact match “WG provides structural, mechanical, electrical, plumbing, and fire protection commercial engineering design, as well as select construction subcontract work.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
22	Poggemeyer Design Group, INC	Exact match	Bowling Green, OH, United StatesHQ recorded Oct 25, 2026	51-200	69 contacts →
	Exact match “The Kleinfelder Group, Inc.(“Kleinfelder”), a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
23	HGD Engineering	Exact match	Alexandria, VA, United StatesHQ recorded Oct 25, 2026	n/a	69 contacts →
	Exact match “Hall Group Design Engineering Firm, LLC (HGD) is a privately held, woman-owned engineering and design firm specializing in facility engineering, planning, and integrated project…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
24	Kohler Ronan	Exact match	New York, NY, United StatesHQ recorded Oct 25, 2026	51-200	68 contacts →
	Exact match “Kohler Ronan Consulting Engineers offers professional engineering and design services across the following major disciplines: Mechanical, Electrical, Plumbing, Fire Protection…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
25	Tekminds International	Exact match	Sterling, VA, United StatesHQ recorded Oct 25, 2026	11-50	64 contacts →
	Exact match “TekMinds provides design and engineering services to firms for generation, distribution, and control of power.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “front-end engineering design services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 415 front-end engineering design services based in the United States

See the full list, filter by size, metro and specialty, and access 2,695 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Front-end engineering design services based in the United States at a glance

As of Oct 25, 2026

37.4%Verified-email coverage

17.4Average contacts per company

11-50Median size (employees)

5.1%Largest-city concentration · Houston

Oct 25, 2026Page data refreshed

Companies by employee count

1-10

192

11-50

171

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 415 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “front-end engineering design services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 2,695 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 25, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “front-end engineering design services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many front-end engineering design services are there based in the United States?

RevenueBase identified 415 company matches for front-end engineering design services associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Optimized Process Designs LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most front-end engineering design services?

Houston leads with 21 company records, followed by New York (11) and Miami (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,695 professional contacts with verified work emails tracked across these 415 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 25, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.