Company lists · Data refreshed September 2026

Top 25 Seismic engineering companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 5,612 companies tracked

RevenueBase identified 5,612 seismic engineering companies worldwide as of September 2026 and tracks 66,754 professional contacts across them, including 23,402 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers seismic engineering 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 17, 2026. Country and city lists for seismic engineering 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 17, 2026 86% judged on-target in blind review

5,612Companies

66,754Contacts tracked

23,402Verified emails

0Mobile numbers

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The 25 largest seismic engineering companies worldwide

Ranked by team size

Top 25 of 5,612 seismic engineering companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to seismic engineering 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	ECS Group Of Companies	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 17, 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 17, 2026
2	BGC Engineering INC	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 17, 2026	501-1,000	798 contacts →
	Partial evidence “BGC Engineering is an international consulting firm that provides professional services in applied earth sciences.” Source: RevenueBase Database · checked Sep 17, 2026
3	Concrejato Engenharia	Indirect evidence	São Paulo, BrazilHQ checked Sep 17, 2026	1,001-5,000	765 contacts →
	Indirect evidence “Criada na década de 1970, a Concrejato é especializada na execução de serviços técnicos de retrofit e restauro de edificações, recuperação e reforço estrutural, obras industriais…” Source: RevenueBase Database · checked Sep 17, 2026
4	Schnabel Engineering	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 17, 2026	501-1,000	707 contacts →
	Indirect evidence “Schnabel is a trusted partner in building the foundation for project success.” Source: RevenueBase Database · checked Sep 17, 2026
5	Trevi S.P.A	Partial evidence	Cesena, ItalyHQ checked Sep 17, 2026	201-500	620 contacts →
	Partial evidence “Trevi, a company specialized in special foundations and soil consolidation, is part of the Trevi Group, a world leader in subsoil engineering and in the design and production of…” Source: RevenueBase Database · checked Sep 17, 2026
6	Sondotécnica Engenharia	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 17, 2026	201-500	588 contacts →
	Indirect evidence “Sondotécnica was founded in 1954.” Source: RevenueBase Database · checked Sep 17, 2026
7	Raba Kistner, INC	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 17, 2026	501-1,000	582 contacts →
	Indirect evidence “Founded in 1968, Raba Kistner Inc.” Source: RevenueBase Database · checked Sep 17, 2026
8	Saexploration	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	521 contacts →
	Indirect evidence “SAExploration offers a full range of geophysical ground acquisition services from design, prospecting, drilling, recording and analysis of field quality, as well as mobilization…” Source: RevenueBase Database · checked Sep 17, 2026
9	Nova Engineering And Environmental, LLC	Partial evidence	Kennesaw, GA, United StatesHQ checked Sep 17, 2026	501-1,000	518 contacts →
	Partial evidence “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Source: RevenueBase Database · checked Sep 17, 2026
10	Geo-Technology Associates, Inc. GTA	Indirect evidence	Abingdon, MD, United KingdomHQ checked Sep 17, 2026	501-1,000	460 contacts →
	Indirect evidence “Geo-Technology Associates, Inc.(GTA) proudly celebrates more than 40 years of service, backed by a team of 600+ professionals-including geotechnical engineers, environmental…” Source: RevenueBase Database · checked Sep 17, 2026
11	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	201-500	432 contacts →
	Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
12	Geoquip Marine	Partial evidence	9001 St. Gallen, SwitzerlandHQ checked Sep 17, 2026	201-500	422 contacts →
	Partial evidence “Geoquip Marine is a geotechnical data acquisition company safely delivering offshore geotechnical site investigations and engineering services to clients worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
13	NGI	Partial evidence	Oslo, NorwayHQ checked Sep 17, 2026	201-500	418 contacts →
	Partial evidence “NGI – The Norwegian Geotechnical Institute – is an independent research centre in the field of geotechnical engineering and the engineering geosciences.” Source: RevenueBase Database · checked Sep 17, 2026
14	Chammas Engenharia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 17, 2026	201-500	418 contacts →
	Indirect evidence “A Chammas acredita que a engenharia aplicada com rigor e seriedade contribui para um mundo mais seguro e sustentável; Desenvolvemos soluções eficazes, combinando expertise humana…” Source: RevenueBase Database · checked Sep 17, 2026
15	Progeo Engenharia Ltda	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 17, 2026	501-1,000	400 contacts →
	Indirect evidence “Fundada em 1981, a empresa é focada na execução de serviços especiais de geologia, engenharia geotécnica e recuperação de estruturas.” Source: RevenueBase Database · checked Sep 17, 2026
16	Fugro Suhaimi Company LTD	Indirect evidence	Dammam, Saudi ArabiaHQ checked Sep 17, 2026	501-1,000	359 contacts →
	Indirect evidence “We are the world’s leading Geo-data specialist, collecting and analysing comprehensive information about the Earth and the structures built upon it.” Source: RevenueBase Database · checked Sep 17, 2026
17	Degenkolb Engineers	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	201-500	332 contacts →
	Indirect evidence “Founded in 1940, Degenkolb Engineers’ practice reflects more than eight decades of commitment to expertise, client service, and life-long learning.” Source: RevenueBase Database · checked Sep 17, 2026
18	Geofizyka Torun S.A	Indirect evidence	Toruń, PolandHQ checked Sep 17, 2026	1,001-5,000	310 contacts →
	Indirect evidence “We deliver innovative geophysical, geological and geotechnical solutions for energy sector as well as renewable energy in Poland and worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
19	Hillis-Carnes Engineering Associates, INC	Partial evidence	Annapolis Junction, MD, United StatesHQ checked Sep 17, 2026	201-500	299 contacts →
	Partial evidence “Hillis-Carnes Engineering Associates, Inc.(HCEA) is a Mid-Atlantic based, multi-disciplined consulting engineering firm.” Source: RevenueBase Database · checked Sep 17, 2026
20	BVP Geotecnia E Hidrotecnia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 17, 2026	201-500	286 contacts →
	Indirect evidence “Somos a BVP Geotecnia e Hidrotecnia.” Source: RevenueBase Database · checked Sep 17, 2026
21	ENGEO	Indirect evidence	San Ramon, CA, United StatesHQ checked Sep 17, 2026	201-500	282 contacts →
	Indirect evidence “ENGEO Incorporated is an award-winning, employee-owned comprehensive provider of more than 400 geotechnical and civil engineers, geologists, GIS experts, environmental scientists…” Source: RevenueBase Database · checked Sep 17, 2026
22	Ag&e	Partial evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	201-500	280 contacts →
	Partial evidence “AG & E is the nation's largest structural engineering firm focused on data centers.” Source: RevenueBase Database · checked Sep 17, 2026
23	Sipel Construções Ltda	Indirect evidence	Feira De Santana, BrazilHQ checked Sep 17, 2026	201-500	268 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Petroseismic Services S.A	Indirect evidence	Bogota, ColombiaHQ checked Sep 17, 2026	501-1,000	267 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	Modjeski And Masters	Indirect evidence	Mechanicsburg, PA, United StatesHQ checked Sep 17, 2026	201-500	241 contacts →
	Indirect evidence “Modjeski and Masters is a nationwide leader in the design, inspection, and rehabilitation of all bridges types, including long-span and movable structures.” Source: RevenueBase Database · checked Sep 17, 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: seismic engineering 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 seismic engineering companies.
Partial evidence: Its own public description names part of seismic engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name seismic engineering 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 5,612 seismic engineering companies worldwide

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Seismic engineering companies worldwide at a glance

As of Sep 17, 2026

35.1%Verified-email coverage

11.9Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

3,223

11-50

1,758

51-200

486

201-500

501-1,000

1,001-5,000

10001+

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 seismic engineering 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: 28 countries, largest first: the United States, Italy, Brazil, France, Canada, Germany, Türkiye, India, Australia, the United Kingdom and 18 more. Country and city lists for seismic engineering companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “seismic engineering 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 seismic engineering 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 seismic engineering 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, 23,402 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 17, 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.

Seismic engineering companies by location

34 lists · largest first

Every Seismic engineering 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 seismic engineering 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 seismic engineering companies are there worldwide?

RevenueBase identified 5,612 seismic engineering 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?

ECS Group Of Companies, headquartered in Chantilly, tops this list with the largest team on record.

Which country has the most seismic engineering companies?

The United States leads with 1,552 companies, followed by Italy (528) and Brazil (497). Every seismic engineering companies list by country and city is linked on this page.

Which city has the most seismic engineering companies?

Sao Paulo leads with 99 headquartered companies, followed by Istanbul (69) and Houston (57).

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 23,402 verified decision-maker contacts tracked across these 5,612 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 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 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.