Company lists · Data refreshed September 2026

Top 25 Transportation engineering staffing companies worldwide

Name: Transportation engineering staffing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 8,790 companies tracked

RevenueBase identified 8,790 transportation engineering staffing companies worldwide as of September 2026 and tracks 248,011 professional contacts across them, including 78,328 with verified work emails. The United States is the largest market and London the largest hub.

This list covers transportation engineering staffing companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for transportation engineering staffing companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

8,790Companies

248,011Contacts tracked

78,328Verified emails

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The 25 largest transportation engineering staffing companies worldwide

Ranked by team size

Top 25 of 8,790 transportation engineering staffing companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to transportation engineering staffing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	CDM Smith	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	5,001-10,000	7,527 contacts →
	Partial evidence “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
2	Terracon	Partial evidence	Olathe, KS, United StatesHQ checked Sep 29, 2026	5,001-10,000	6,113 contacts →
	Partial evidence “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Source: RevenueBase Database · checked Sep 29, 2026
3	Michael Baker International	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 29, 2026	5,001-10,000	4,362 contacts →
	Partial evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 29, 2026
4	Murphy	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	3,095 contacts →
	Partial evidence “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026
5	Italferr S.P.A	Indirect evidence	Rome, ItalyHQ checked Sep 29, 2026	1,001-5,000	2,701 contacts →
	Indirect evidence “At Italferr – a company belonging to the Italian State Railways Group Ferrovie dello Stato Italiane – we have built up a 30 year long experience at the forefront of cutting-edge…” Source: RevenueBase Database · checked Sep 29, 2026
6	Kleinfelder	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,344 contacts →
	Indirect evidence “At Kleinfelder, we have been connecting great people to the best work since 1961.” Source: RevenueBase Database · checked Sep 29, 2026
7	VHB	Indirect evidence	Watertown, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,277 contacts →
	Indirect evidence “We are VHB.” Source: RevenueBase Database · checked Sep 29, 2026
8	ECS Group Of Companies	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,210 contacts →
	Partial evidence “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Source: RevenueBase Database · checked Sep 29, 2026
9	Systra India	Partial evidence	Faridabad, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,841 contacts →
	Partial evidence “SYSTRA is a consulting and engineering firm, a world leader in public transport infrastructure engineering.” Source: RevenueBase Database · checked Sep 29, 2026
10	Rk&k	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,641 contacts →
	Partial evidence “RK & K is a full-service planning, engineering, environmental, and construction management/inspection firm serving a wide range of clients throughout the United States.” Source: RevenueBase Database · checked Sep 29, 2026
11	Normatel Engenharia	Indirect evidence	Fortaleza, BrazilHQ checked Sep 29, 2026	1,001-5,000	1,628 contacts →
	Indirect evidence “Fundada em 1977, a Normatel Engenharia desenvolveu durante esses anos uma sólida, dinâmica e bem estruturada base técnica e de gestão, com ampla visão de mercado.” Source: RevenueBase Database · checked Sep 29, 2026
12	Garver	Strong evidence	North Little Rock, AR, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,499 contacts →
	Strong evidence “Founded in 1919, Garver is an employee-owned engineering, planning, and environmental services firm focused on aviation, transportation, buildings, federal, water and wastewater…” Source: RevenueBase Database · checked Sep 29, 2026
13	RENCO	Indirect evidence	Pesaro, ItalyHQ checked Sep 29, 2026	1,001-5,000	1,494 contacts →
	Indirect evidence “Renco S.p.A, an Italian company founded in 1979, is continually committed to providing its Clients with sound business solutions in an ever increasingly complex and challenging…” Source: RevenueBase Database · checked Sep 29, 2026
14	GPI Greenman-Pedersen, INC	Partial evidence	Melville, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,354 contacts →
	Partial evidence “With a staff of over 1,800 professionals, Greenman-Pedersen, Inc.(GPI) is a leading engineering consulting firm that specializes in the innovative design and construction of…” Source: RevenueBase Database · checked Sep 29, 2026
15	Walter P Moore	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Welcome to Walter P Moore!” Source: RevenueBase Database · checked Sep 29, 2026
16	Consor	Strong evidence	United StatesHQ checked Sep 29, 2026	1,001-5,000	1,292 contacts →
	Strong evidence “Consor is a leading engineering and consulting firm advancing intelligent, future-ready infrastructure across transportation and water systems.” Source: RevenueBase Database · checked Sep 29, 2026
17	Construction Labor Contractors	Partial evidence	Round Rock, TX, United StatesHQ checked Sep 29, 2026	501-1,000	1,234 contacts →
	Partial evidence “Let us make construction staffing work for you.” Source: RevenueBase Database · checked Sep 29, 2026
18	Movares	Strong evidence	Utrecht, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	1,213 contacts →
	Strong evidence “Movares is an engineering consultancy, providing solutions to capacity, safety, and integration problems in the areas of mobility, infrastructure and transportation systems.” Source: RevenueBase Database · checked Sep 29, 2026
19	Volkert, INC	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,199 contacts →
	Indirect evidence “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Source: RevenueBase Database · checked Sep 29, 2026
20	TRS Staffing Solutions	Strong evidence	Greenville, United StatesHQ checked Sep 29, 2026	201-500	1,187 contacts →
	Strong evidence “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: RevenueBase Database · checked Sep 29, 2026
21	LEA Associates South Asia Private Limited	Partial evidence	New Delhi, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,092 contacts →
	Partial evidence “also known as, is a premier engineering, planning and management consulting organization in India, operational since 1993.” Source: RevenueBase Database · checked Sep 29, 2026
22	David Evans And Associates, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 29, 2026	501-1,000	1,031 contacts →
	Partial evidence “Since its founding in 1976 in Portland, Oregon, DEA has become a recognized leader for progressive and sustainable design and management solutions for complex transportation, land…” Source: RevenueBase Database · checked Sep 29, 2026
23	GAI Consultants, INC	Partial evidence	Homestead, PA, United StatesHQ checked Sep 29, 2026	501-1,000	964 contacts →
	Partial evidence “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Source: RevenueBase Database · checked Sep 29, 2026
24	Sraco Human Resources Company	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 29, 2026	10001+	947 contacts →
	Indirect evidence “SRACO Human Resources Company was established in 2016 to provide the Saudi market with qualified and trained manpower for all activities, commercial, industrial, and domestic…” Source: RevenueBase Database · checked Sep 29, 2026
25	Transystems	Partial evidence	Kansas City, MO, United StatesHQ checked Sep 29, 2026	1,001-5,000	850 contacts →
	Partial evidence “TranSystems plans, designs, and oversees construction to enhance the transportation networks and infrastructure that makes communities more livable today and in the future.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: transportation engineering staffing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names transportation engineering staffing companies.
Partial evidence: Its own public description names part of transportation engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transportation engineering staffing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 8,790 transportation engineering staffing companies worldwide

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Transportation engineering staffing companies worldwide at a glance

As of Sep 29, 2026

31.6%Verified-email coverage

28.2Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,794

11-50

2,798

51-200

1,393

201-500

453

501-1,000

156

1,001-5,000

123

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among transportation engineering staffing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for transportation engineering staffing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “transportation engineering staffing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names transportation engineering staffing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among transportation engineering staffing companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 78,328 across the full list. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Transportation engineering staffing companies by location

47 lists · largest first

Every Transportation engineering staffing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names transportation engineering staffing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many transportation engineering staffing companies are there worldwide?

RevenueBase identified 8,790 transportation engineering staffing companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

CDM Smith, headquartered in Boston, tops this list with the largest team on record.

Which country has the most transportation engineering staffing companies?

The United States leads with 2,545 companies, followed by the United Kingdom (595) and Germany (454). Every transportation engineering staffing companies list by country and city is linked on this page.

Which city has the most transportation engineering staffing companies?

London leads with 109 headquartered companies, followed by Houston (89) and Sao Paulo (66).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 78,328 verified decision-maker contacts tracked across these 8,790 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 Smart Search, 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.