Company lists · Data refreshed September 2026

Top 25 Geotechnical engineering companies based in Switzerland

Find 273 geotechnical engineering companies based in Switzerland, with 3,032 business contacts and 1,366 email addresses, published September 2026. Zurich is the single most-represented city among the companies on this list. Use the directory to identify firms for site investigation, subsurface analysis, foundation design, and related project needs.

Geotechnical engineering companies investigate soil, rock, groundwater, and subsurface conditions to inform foundation design, earthwork, construction, and infrastructure projects. This list covers companies that provide geotechnical investigation, testing, analysis, design, consulting, or related subsurface engineering services. Ranked by team size, largest first. Data current as of September 6, 2026.

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 6, 2026 86% judged on-target in blind review
273Companies
3,032Contacts tracked
1,366Verified emails
39Mobile numbers
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The 25 largest geotechnical engineering companies based in Switzerland

Ranked by team size
Top 25 of 273 geotechnical engineering companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to geotechnical 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidence9001 St. Gallen, SwitzerlandHQ checked Sep 6, 2026201-500422 contacts →

“Geoquip Marine is a geotechnical data acquisition company safely delivering offshore geotechnical site investigations and engineering services to clients worldwide.”

Source: company website · checked Sep 6, 2026
2Partial evidenceRenens, SwitzerlandHQ checked Sep 6, 20261,001-5,000288 contacts →

“Gruner Stucky Ltd (formerly Stucky Ltd) is a Swiss-based international consulting engineering company active in energy, infrastructure and buildings.”

Source: company website · checked Sep 6, 2026
3Partial evidenceBern 14, SwitzerlandHQ checked Sep 6, 2026201-500156 contacts →

“IUB Engineering AG has been an overall planner for infrastructure systems for over 50 years.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceHefenhofen, SwitzerlandHQ checked Sep 6, 2026501-1,00086 contacts →

“Wir bauen mit Menschen für Menschen Mit Professionalität und Kreativität auf dem Bau hat sich die STUTZ AG zum führenden Bauunternehmen in der Ostschweiz entwickelt.”

Source: company website · checked Sep 6, 2026
5Indirect evidenceSuisse-romande, SwitzerlandHQ checked Sep 6, 202651-20069 contacts →

“Fondée en 1955 à Lausanne, sd ingénierie se compose aujourd’hui d’environ 180 collaborateurs répartis au sein de sept filiales cantonales.”

Source: company website · checked Sep 6, 2026
6Indirect evidenceStadtkreis 1 Altstadt, SwitzerlandHQ checked Sep 6, 202651-20067 contacts →

“In der Bearbeitung von interdisziplinären Grossprojekten bis zu kleinen «Eine-Person-Projekten» bietet Locher Ingenieure das ideale Umfeld.”

Source: company website · checked Sep 6, 2026
7Indirect evidenceLausanne, SwitzerlandHQ checked Sep 6, 202651-20059 contacts →

“Depuis 1964, notre bureau est spécialisé dans la réalisation de travaux en relation avec le sol.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceThônex, SwitzerlandHQ checked Sep 6, 202651-20059 contacts →

“Fondé en 1979, le bureau Pierre Amsler était spécialisé dans les études géotechniques et les travaux spéciaux dès sa création.”

Source: company website · checked Sep 6, 2026
9Indirect evidenceBellinzona, SwitzerlandHQ checked Sep 6, 202651-20053 contacts →

“con 140 collaboratori è attiva in diversi ambiti dell'ingegneria, tra cui ingegneria civile, restauro di monumenti storici, geologia, impiantistica, fisica della costruzione…”

Source: company website · checked Sep 6, 2026
10Indirect evidenceSeuzach, SwitzerlandHQ checked Sep 6, 202651-20049 contacts →

“Seit vielen Jahren steht die INGESA AG für hochwertige Ingenieursdienstleistungen im Kanton Zürich.”

Source: company website · checked Sep 6, 2026
11Indirect evidenceChavannes-près-renens, SwitzerlandHQ checked Sep 6, 202651-20045 contacts →

“De Cérenville Géotechnique regroupe sous une même entité un bureau d’ingénieurs-conseils (ICOS) et un service d’essais et mesures (SEM), tous deux spécialisés dans les domaines de…”

Source: company website · checked Sep 6, 2026
12Indirect evidenceMönchaltorf, SwitzerlandHQ checked Sep 6, 202651-20039 contacts →

“Solexperts AG (soil experts) was founded in 1947 by Giovanni Rodio.”

Source: company website · checked Sep 6, 2026
13Indirect evidence8048 Zürich, SwitzerlandHQ checked Sep 6, 202651-20036 contacts →

“Die Jäckli Geologie AG ist ein eigenständiges Schweizer Beratungsunternehmen mit verschiedenen Standorten in der Nord- und Zentralschweiz.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceZürich, SwitzerlandHQ checked Sep 6, 202651-20031 contacts →

“1922 von Ernst Rathgeb gegründet, hat unser Unternehmen bereits in frühen Jahren an wichtigen Bauwerken wie z.B.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceZurich, SwitzerlandHQ checked Sep 6, 202611-5028 contacts →

“Wir beraten seit 1974 Bauherren und Planer in allen Fragen rund um den Baugrund.”

Source: company website · checked Sep 6, 2026
16Indirect evidenceYverdon-les-bains, SwitzerlandHQ checked Sep 6, 202611-5028 contacts →

“Geo2X is a Swiss Company based near Geneva.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceZürich, SwitzerlandHQ checked Sep 6, 202651-20027 contacts →

“Die Tradition der Flückiger + Bosshard AG, als Teil einer innovativen, leistungsstarken und unabhängigen Ingenieurgruppe im Ingenieurbau reicht zurück bis ins Jahr 1964.”

Source: company website · checked Sep 6, 2026
18Indirect evidenceThalwil, SwitzerlandHQ checked Sep 6, 202611-5025 contacts →

“Osterwalder, Lehmann - Ingenieure und Geometer AG wurde im Jahr durch Stefan Osterwalder und Heinz Lehmann gegründet.”

Source: company website · checked Sep 6, 2026
19Indirect evidence8050 Zürich, SwitzerlandHQ checked Sep 6, 202651-20024 contacts →

“Die Synaxis AG plant und realisiert anspruchsvolle Projekte im Hochbau, Brückenbau und Infrastrukturbau, in der Bauwerkserhaltung sowie in Grundbau und Geotechnik.”

Source: company website · checked Sep 6, 2026
20Partial evidenceGeneve Carouge, SwitzerlandHQ checked Sep 6, 202611-5024 contacts →

“Cement Engineering SA (CESA) Engineering is a professionals business!”

Source: company website · checked Sep 6, 2026
21Indirect evidenceHasle B.b., SwitzerlandHQ checked Sep 6, 202651-20022 contacts →

“Wir sind ein Team von Ingenieuren, Bautechnikern und qualifizierten Bauzeichnern und Ihr Ansprechpartner für alle Aufgaben im Ingenieurbau.”

Source: company website · checked Sep 6, 2026
22Indirect evidenceDomat/ems, SwitzerlandHQ checked Sep 6, 202611-5022 contacts →

“Aus Tradition engagiert, innovativ und immer auf der Suche nach der besten Lösung!”

Source: company website · checked Sep 6, 2026
23Indirect evidenceServion, SwitzerlandHQ checked Sep 6, 202611-5022 contacts →

“Fondée en 1991 et accréditée en 1994 (STS 090), Infralab SA est un bureau d’ingénieurs civils et un laboratoire d’analyse des matériaux de construction, avec son siège dans le…”

Source: company website · checked Sep 6, 2026
24Indirect evidenceSt. Gallen, SwitzerlandHQ checked Sep 6, 202651-20021 contacts →

“Die HASTAG St.”

Source: company website · checked Sep 6, 2026
25Indirect evidenceCarouge, SwitzerlandHQ checked Sep 6, 202611-5020 contacts →

“Le Collectif SA propose des services dans le domaine du génie civil et de l'ingénierie des structures.”

Source: company website · checked Sep 6, 2026

Showing 25 of 273 geotechnical engineering companies based in Switzerland

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Geotechnical engineering companies based in Switzerland at a glance

As of Sep 6, 2026
45.1%Verified-email coverage
1.3%Mobile-number coverage
11.1Average contacts per company
11-50Median size (employees)
8.8%Largest-city concentration · Zurich
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
122
11-50
113
51-200
23
201-500
5
501-1,000
3
1,001-5,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 geotechnical 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.
What qualifies
Companies headquartered in Switzerland whose own description of what they do matches “geotechnical 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 geotechnical 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 geotechnical engineering companies, and records with no verified work email. Companies headquartered outside Switzerland are excluded even when they keep an office there.
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, 1,366 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 6, 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.

Frequently asked

What do geotechnical engineering companies do?

Geotechnical engineering companies assess soil, rock, groundwater, and subsurface conditions to support foundation design, earthwork, construction, and infrastructure projects.

How many geotechnical engineering companies are based in Switzerland?

The directory lists 273 geotechnical engineering companies based in Switzerland.

Where are most geotechnical engineering companies located?

Zurich is the single most-represented city among the companies on this list.

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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.