Company lists · Data refreshed September 2026

Top 25 Infrastructure engineering staffing companies based in Switzerland

Name: Infrastructure engineering staffing companies based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 565 companies tracked

RevenueBase identified 565 infrastructure engineering staffing companies headquartered in Switzerland as of September 2026 and tracks 8,645 professional contacts across them, including 4,049 with verified work emails. Zurich is the largest hub.

This list covers infrastructure engineering staffing companies headquartered in Switzerland, 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 28, 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 28, 2026 86% judged on-target in blind review

565Companies

8,645Contacts tracked

4,049Verified emails

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The 25 largest infrastructure engineering staffing companies based in Switzerland

Ranked by team size

Top 25 of 565 infrastructure engineering staffing companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure 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	Amstein Walthert	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 28, 2026	1,001-5,000	563 contacts →
	Indirect evidence “Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.” Source: RevenueBase Database · checked Sep 28, 2026
2	Pini Group	Indirect evidence	Grono, SwitzerlandHQ checked Sep 28, 2026	1,001-5,000	471 contacts →
	Indirect evidence “We are a comprehensive network of specialists, expanding as we integrate talent and expertise.” Source: RevenueBase Database · checked Sep 28, 2026
3	Gruner	Indirect evidence	Basel, SwitzerlandHQ checked Sep 28, 2026	1,001-5,000	462 contacts →
	Indirect evidence “Gruner at a glance Founded: 1862 in Basel, Switzerland Legal form: Since 1970, public limited company owned by the founding families and employees Employees: more than 1,200 from…” Source: RevenueBase Database · checked Sep 28, 2026
4	Emch Berger Group	Indirect evidence	Bern, SwitzerlandHQ checked Sep 28, 2026	501-1,000	283 contacts →
	Indirect evidence “Comprehensive know-how and many years of experience Since 1953, we have been providing our clients with design, consulting and project management services for all phases of their…” Source: RevenueBase Database · checked Sep 28, 2026
5	Lombardi Engineering Switzerland	Strong evidence	Bellinzona-giubiasco, SwitzerlandHQ checked Sep 28, 2026	201-500	276 contacts →
	Strong evidence “Lombardi Switzerland is a leading engineering company with over 400 skilled engineers and technicians delivering multidisciplinary and specialized services in infrastructure and…” Source: RevenueBase Database · checked Sep 28, 2026
6	Holinger	Partial evidence	Liestal, SwitzerlandHQ checked Sep 28, 2026	501-1,000	265 contacts →
	Partial evidence “For over 90 years, HOLINGER has been solving engineering and scientific tasks in various specialist areas related to the water cycle.” Source: RevenueBase Database · checked Sep 28, 2026
7	Capefront Energies	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 28, 2026	201-500	190 contacts →
	Indirect evidence “Capefront Energies: A Global Leader in the Energy Industry Capefront Energies is a prominent global leader in the energy industry, dedicated to delivering top-tier recruitment…” Source: RevenueBase Database · checked Sep 28, 2026
8	IUB Engineering LTD	Strong evidence	Bern 14, SwitzerlandHQ checked Sep 28, 2026	201-500	156 contacts →
	Strong evidence “IUB Engineering AG has been an overall planner for infrastructure systems for over 50 years.” Source: RevenueBase Database · checked Sep 28, 2026
9	Bellini	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 28, 2026	51-200	96 contacts →
	Indirect evidence “Wir sind die Spezialisten wenn es um den Personalverleih im Baugewerbe geht.” Source: RevenueBase Database · checked Sep 28, 2026
10	GPC SA	Indirect evidence	Geneva, SwitzerlandHQ checked Sep 28, 2026	201-500	91 contacts →
	Indirect evidence “Créée en 1985 et basée à Genève en Suisse, GPC SA propose un service d’assistance technique et de portage salarial aux entreprises, sur leurs activités et projets internationaux.” Source: RevenueBase Database · checked Sep 28, 2026
11	Bänziger Partner Ag, Ingenieure Planer	Indirect evidence	Buchs, SwitzerlandHQ checked Sep 28, 2026	51-200	83 contacts →
	Indirect evidence “1959 durch Dialma Jakob Bänziger gegründet - heute eine der führenden Bauingenieurfirmen in der Schweiz.” Source: RevenueBase Database · checked Sep 28, 2026
12	Willers	Strong evidence	Stadtkreis 9, SwitzerlandHQ checked Sep 28, 2026	51-200	81 contacts →
	Strong evidence “Willers is an international engineering company for high-tech buildings and infrastructures.” Source: RevenueBase Database · checked Sep 28, 2026
13	Geoinfra Ingenieure AG	Indirect evidence	Pfäffikon, SwitzerlandHQ checked Sep 28, 2026	51-200	71 contacts →
	Indirect evidence “Die Haupttätigkeitsfelder der über 160 Mitarbeitenden der Geoinfra Ingenieure AG sind die kommunale Planung, die Vermessung, die Geoinformation (GIS) sowie die Projektierung und…” Source: RevenueBase Database · checked Sep 28, 2026
14	SD Ingénierie	Indirect evidence	Suisse-romande, SwitzerlandHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect evidence “Fondée en 1955 à Lausanne, sd ingénierie se compose aujourd’hui d’environ 180 collaborateurs répartis au sein de sept filiales cantonales.” Source: RevenueBase Database · checked Sep 28, 2026
15	Rothpletz, Lienhard CIE AG Bauingenieure & Bauunternehmung	Indirect evidence	Aarau, SwitzerlandHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect evidence “Bauunternehmung und Ingenieurbüro unter einem Dach Als einzige Schweizer Unternehmung verbinden wir seit 1918 Planung und Ausführung im Bauwesen.” Source: RevenueBase Database · checked Sep 28, 2026
16	Boess Gruppe	Indirect evidence	Bern, SwitzerlandHQ checked Sep 28, 2026	51-200	67 contacts →
	Indirect evidence “Wir sind nicht nur Elektroingenieure.” Source: RevenueBase Database · checked Sep 28, 2026
17	Locher Ingenieure	Indirect evidence	Stadtkreis 1 Altstadt, SwitzerlandHQ checked Sep 28, 2026	51-200	67 contacts →
	Indirect evidence “In der Bearbeitung von interdisziplinären Grossprojekten bis zu kleinen «Eine-Person-Projekten» bietet Locher Ingenieure das ideale Umfeld.” Source: RevenueBase Database · checked Sep 28, 2026
18	DSP Ingenieure & Planer AG	Indirect evidence	Uster, SwitzerlandHQ checked Sep 28, 2026	51-200	66 contacts →
	Indirect evidence “dsp Ingenieure & Planer AG ist seit 1985 als unabhängiges Ingenieur- und Planungsunternehmen in der Bauwirtschaft erfolgreich in der ganzen Schweiz und im Bereich der…” Source: RevenueBase Database · checked Sep 28, 2026
19	Kissling Zbinden AG	Indirect evidence	Bern, SwitzerlandHQ checked Sep 28, 2026	51-200	62 contacts →
	Indirect evidence “Die Kissling + Zbinden AG ist eine innovative, erfolgreiche und im Markt bestens verankerte Ingenieurunternehmung mit Standorten in Spiez, Thun, Bern, Solothurn und Zürich.” Source: RevenueBase Database · checked Sep 28, 2026
20	B3 Engineering UND Management AM BAU	Indirect evidence	Wil, SwitzerlandHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence “Bauprojekte sind Teamleistungen.” Source: RevenueBase Database · checked Sep 28, 2026
21	Kost Partner AG	Indirect evidence	Sursee, SwitzerlandHQ checked Sep 28, 2026	51-200	57 contacts →
	Indirect evidence “Studien, Beratungen, Konzepte, Planungen, Vermessungen, Projektierungen, Bauleitungen, Gesamtprojektleitungen, Expertisen, GIS- und lT-Dienstleistungen Wir sind ein führendes…” Source: RevenueBase Database · checked Sep 28, 2026
22	Project Partners LTD Consulting Engineers	Partial evidence	Lugano, SwitzerlandHQ checked Sep 28, 2026	51-200	54 contacts →
	Partial evidence “Project Partners Ltd Consulting Engineers is an engineering firm, with headquarter in Lugano-Switzerland, specialized in the construction and strategic consultancy of large works…” Source: RevenueBase Database · checked Sep 28, 2026
23	Mawi Group SA	Indirect evidence	Bellinzona, SwitzerlandHQ checked Sep 28, 2026	51-200	53 contacts →
	Indirect evidence “con 140 collaboratori è attiva in diversi ambiti dell'ingegneria, tra cui ingegneria civile, restauro di monumenti storici, geologia, impiantistica, fisica della costruzione…” Source: RevenueBase Database · checked Sep 28, 2026
24	Infra Tunnel SA	Partial evidence	Marin-epagnier, SwitzerlandHQ checked Sep 28, 2026	51-200	47 contacts →
	Partial evidence “Infra Tunnel construit et réhabilite des ouvrages souterrains d'infrastructures, hydrauliques, et industriels, dans toute la Suisse.” Source: RevenueBase Database · checked Sep 28, 2026
25	TM Concept AG	Strong evidence	Aarau, SwitzerlandHQ checked Sep 28, 2026	51-200	46 contacts →
	Strong evidence “TM Concept AG is an interdisciplinary engineering company that develops and implements network infrastructures.” Source: RevenueBase Database · checked Sep 28, 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: infrastructure 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 infrastructure engineering staffing companies.
Partial evidence: Its own public description names part of infrastructure 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 infrastructure 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 565 infrastructure engineering staffing companies based in Switzerland

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Infrastructure engineering staffing companies based in Switzerland at a glance

As of Sep 28, 2026

46.8%Verified-email coverage

15.3Average contacts per company

11-50Median size (employees)

9.0%Largest-city concentration · Zurich

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

257

11-50

206

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 565 companies.

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 infrastructure 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.
What qualifies: Companies headquartered in Switzerland whose own description of what they do matches “infrastructure 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 infrastructure 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 infrastructure engineering staffing 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, 4,049 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 28, 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.

Infrastructure engineering staffing companies by metro

Infrastructure engineering staffing companies in Zurich51

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 infrastructure 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 infrastructure engineering staffing companies are there based in Switzerland?

RevenueBase identified 565 infrastructure engineering staffing companies headquartered in Switzerland 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?

Amstein Walthert, headquartered in Zurich, tops this list with the largest team on record.

Which city has the most infrastructure engineering staffing companies?

Zurich leads with 51 headquartered companies, followed by Lausanne (21) and Geneve (15).

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 4,049 verified decision-maker contacts tracked across these 565 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 28, 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.