Company lists · Data refreshed November 2026

Top 25 Seismic engineering staffing companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 10,789 companies tracked

RevenueBase identified 10,789 company matches for seismic engineering staffing companies worldwide as of November 2026 and tracks 164,931 professional contacts across them, including 43,155 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for seismic engineering staffing companies worldwide, 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 November 5, 2026. Country and city lists for seismic engineering staffing companies follow the table.

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 Nov 5, 2026 How this list was built

10,789Companies

164,931Contacts tracked

43,155Verified emails

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The 25 largest seismic engineering staffing companies worldwide

Ranked by team size

Top 25 of 10,789 company matches for seismic engineering staffing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	Terracon	Exact match	Olathe, NE, United StatesHQ recorded Nov 5, 2026	5,001-10,000	6,576 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	NES Fircroft	Exact match	Altrincham, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	3,156 contacts →
	Exact match “With over 90 years’ combined experience of delivering workforce solutions to the global energy industry, NES Fircroft is proud to be the world’s leading engineering staffing…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Englobe	Exact match	Québec, ON, CanadaHQ recorded Nov 5, 2026	1,001-5,000	1,936 contacts →
	Exact match “Englobe is a leader in the fields of engineering, gesosciences, environmental management, asset integrity and quality management.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Synergie Italia	Exact match	Turin, ItalyHQ recorded Nov 5, 2026	501-1,000	1,844 contacts →
	Exact match “L’Italia è piena di talenti: il nostro lavoro è riconoscerli!” Synergie Italia S.p.A.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Nov 5, 2026	201-500	1,274 contacts →
	Exact match “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	GZA Geoenvironmental, INC	Exact match	Norwood, MA, United StatesHQ recorded Nov 5, 2026	501-1,000	922 contacts →
	Exact match “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	JKS A S	Exact match	Ringkøbing, DenmarkHQ recorded Nov 5, 2026	1,001-5,000	908 contacts →
	Exact match “We are JKS.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	BGC Engineering INC	Exact match	Vancouver, BC, CanadaHQ recorded Nov 5, 2026	501-1,000	846 contacts →
	Exact match “BGC Engineering is an international consulting firm that provides professional services in applied earth sciences.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Schnabel Engineering	Exact match	Glen Allen, VA, United StatesHQ recorded Nov 5, 2026	501-1,000	767 contacts →
	Exact match “Schnabel is a trusted partner in building the foundation for project success.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	PTS Advance	Exact match	Tustin, CA, United StatesHQ recorded Nov 5, 2026	501-1,000	764 contacts →
	Exact match “PTS Advance teams up with thousands of candidates, clients, and partners to advance workforce utilization in the Oil, Gas & Chemicals, Power & Renewables, Advanced Manufacturing…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Spencer Ogden	Exact match	London, United KingdomHQ recorded Nov 5, 2026	201-500	763 contacts →
	Exact match “Spencer Ogden \| Powering Progress Spencer Ogden partners with the organisations shaping the future of Critical Infrastructure, Natural Resources, Sustainability, and Finance.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Saexploration	Exact match	Houston, AB, United StatesHQ recorded Nov 5, 2026	201-500	671 contacts →
	Exact match “SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Volt Technical Resources	Exact match	Orange, CA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	666 contacts →
	Exact match “A Six Sigma Company ~61 years in the industry ~Nationwide 4 million+ candidate database ~Fortune Company ~Extensive E-Recruiting capabilities ~Reference and Employment check…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Poolia Sverige	Exact match	Stockholm, SwedenHQ recorded Nov 5, 2026	1,001-5,000	656 contacts →
	Exact match “Att hitta rätt person till rätt plats – det är vår kärnkompetens.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Fircroft	Exact match	Warrington, United KingdomHQ recorded Nov 5, 2026	501-1,000	637 contacts →
	Exact match “Fircroft is now part of the NES Fircroft group - the world’s leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Infrastructure, Life Sciences…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Raba Kistner, INC	Exact match	San Antonio, UT, United StatesHQ recorded Nov 5, 2026	501-1,000	612 contacts →
	Exact match “Founded in 1968, Raba Kistner Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	VGC Group	Exact match	Ruislip, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	576 contacts →
	Exact match “The VGC Group is the leading recruitment partner to the UK infrastructure industry – ‘uniting talent and expertise to deliver success for all’.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	VEN Consulting India PVT LTD	Exact match	Bangalore, IndiaHQ recorded Nov 5, 2026	1,001-5,000	545 contacts →
	Exact match “Ven India - Your Resource Augmentation Success Partner Empowering Industries with Skilled Engineering Talent Since 2010 At VEN India, we specialize in engineering resource…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Waterman Aspen	Exact match	Chelmsford, United KingdomHQ recorded Nov 5, 2026	501-1,000	537 contacts →
	Exact match “Waterman Aspen welcomes engineers and technical specialists to make their mark on some of the biggest infrastructure projects across the UK on a secondment basis.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	LVI Associates	Exact match	London, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	518 contacts →
	Exact match “Infrastructure plays a critical role in creating a future that works for everyone.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Launch Technical Workforce Solutions	Exact match	Oak Brook, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	518 contacts →
	Exact match “LAUNCH Technical Workforce Solutions partners with aviation, transportation, and industrial organizations to solve complex workforce challenges.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	NSC	Exact match	Atlanta, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	516 contacts →
	Exact match “Welcome to NSC, the Skilled Staffing Experts!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Morson Talent	Exact match	Manchester, United KingdomHQ recorded Nov 5, 2026	1,001-5,000	516 contacts →
	Exact match “With a unique 50-year heritage of innovative recruitment, Morson Talent is a business with unrivalled sector knowledge, trusted relationships, highly skilled expertise and a…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Trillium Construction Services	Exact match	Kalamazoo, MI, United StatesHQ recorded Nov 5, 2026	201-500	509 contacts →
	Exact match “Trillium Construction Services has over a quarter of a century of experience in the construction recruiting industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Geo-Technology Associates, Inc. GTA	Exact match	Abingdon, OH, United KingdomHQ recorded Nov 5, 2026	501-1,000	503 contacts →
	Exact match “Geo-Technology Associates, Inc.(GTA) proudly celebrates more than 40 years of service, backed by a team of 600+ professionals-including geotechnical engineers, environmental…” Recorded in the RevenueBase company graph · Nov 5, 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 “seismic engineering staffing companies”. 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 10,789 seismic engineering staffing companies worldwide

See the full list, filter by size, metro and specialty, and access 43,155 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Seismic engineering staffing companies worldwide at a glance

As of Nov 5, 2026

26.2%Verified-email coverage

15.3Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

5,867

11-50

3,120

51-200

1,212

201-500

301

501-1,000

111

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for seismic engineering staffing companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “seismic engineering staffing companies” 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. 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 43,155 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 November 5, 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.

Seismic engineering staffing companies by location

65 lists · largest first

Every Seismic 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 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 “seismic engineering staffing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many seismic engineering staffing companies are there worldwide?

RevenueBase identified 10,789 company matches for seismic engineering staffing companies worldwide as of November 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?

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

Which country has the most seismic engineering staffing companies?

The United States leads with 2,229 companies, followed by the United Kingdom (1,547) and the Netherlands (619). Every seismic engineering staffing companies list by country and city is linked on this page.

Which city has the most seismic engineering staffing companies?

London leads with 337 company records, followed by Houston (133) and Manchester (74).

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 43,155 professional contacts with verified work emails tracked across these 10,789 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 November 5, 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.