Company lists · Data refreshed September 2026

Top 17 Industrial engineering firms based in Pittsburgh, United States

Name: Industrial engineering firms based in Pittsburgh, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 27 companies tracked

RevenueBase identified 27 company matches for industrial engineering firms associated with Pittsburgh, United States as of September 2026 and tracks 1,485 professional contacts across them, including 652 with verified work emails. Across the United States, Houston is the largest hub for this category (202 companies); Pittsburgh has 27.

This list covers company matches for industrial engineering firms associated with Pittsburgh, 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 September 17, 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 Sep 17, 2026 How this list was built

27Companies

1,485Contacts tracked

652Verified emails

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The 17 largest industrial engineering firms based in Pittsburgh, United States

Ranked by team size

Top 17 of 27 company matches for industrial engineering firms based in Pittsburgh, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	TMS International LLC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	848 contacts →
	Exact match “At TMS International We Create Value.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Rizzo International	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	51-200	165 contacts →
	Exact match “RIZZO International, Inc.(RIZZO) is a global engineering and consulting firm headquartered in Pittsburgh, Pennsylvania US.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	CSD Engineers	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	201-500	101 contacts →
	Exact match “CSD Engineers (CSD) is a premier provider of multi-discipline engineering and management services for the heavy industrial sectors across the United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	LLI Engineering	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	54 contacts →
	Exact match “Founded in 1910 in Pittsburgh, Pennsylvania, LLI Engineering a veteran owned small business, specializes in commercial, critical facilities, infrastructure upgrades, Green…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	R.T. Patterson Company	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “R.T.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Gilson Engineering	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	43 contacts →
	Exact match “For more than 50 years Gilson Engineering has been built upon innovation, expertise, and the highest degree of integrity.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	A&a Consultants, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	39 contacts →
	Exact match “About A&A Consultants A&A provides comprehensive engineering services to private firms, governmental agencies and large corporations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	D'appolonia Engineering	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	32 contacts →
	Exact match “Founded in 1956, D'APPOLONIA has grown to be an industry leader in providing consulting engineering services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	WL Port-Land Systems, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “WL Port-Land specializes in the storage, processing, & handling of bulk materials in all industries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Claitman Engineering Associates, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Daedalus	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “Daedalus provides research, design, human factors, engineering, and manufacturing transition services to medical, scientific, consumer, and industrial product companies.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Mesa, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Taylor Structural Engineers, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	1-10	10 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Bally Design	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “Bally Design is a Pittsburgh-based consultancy of skilled industrial, graphic, and interface designers; facilitators, researchers, and engineers; creative thinkers and healthy…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Ectobox, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	8 contacts →
	Exact match “From a single pump to the entire plant to the enterprise, Ectobox is your guide for unifying lines in the plant and data systems to becoming truly insight-driven.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Iams Consulting LLC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “Iams Consulting LLC provides high quality, innovative mechanical, electrical, plumbing and fire protection engineering services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Garvin Boward Beitko Engineering, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 17, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 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 “industrial engineering firms”. 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 17 of 27 industrial engineering firms based in Pittsburgh, United States

See the full list, filter by size, metro and specialty, and access 652 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial engineering firms based in Pittsburgh, United States at a glance

As of Sep 17, 2026

43.9%Verified-email coverage

55.0Average contacts per company

11-50Median size (employees)

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Pittsburgh, so it is reported there. Company counts and contact totals on this page are exact for Pittsburgh, over 27 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 Pittsburgh, United States whose business descriptions match “industrial engineering firms” 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 652 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 September 17, 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.

Industrial engineering firms by metro in the United States

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 “industrial engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial engineering firms are there based in Pittsburgh, United States?

RevenueBase identified 27 company matches for industrial engineering firms associated with Pittsburgh, United States as of September 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?

TMS International LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most industrial engineering firms?

Houston leads the United States with 202 company records, followed by New York (110) and Atlanta (94). Pittsburgh has 27.

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 652 professional contacts with verified work emails tracked across these 27 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 September 17, 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.