Company lists · Data refreshed September 2026

Top 25 Infrastructure consulting firms based in Switzerland

Name: Infrastructure consulting firms based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 717 companies tracked

RevenueBase identified 717 infrastructure consulting firms headquartered in Switzerland as of September 2026 and tracks 11,520 professional contacts across them, including 5,256 with verified work emails and 207 with mobile numbers. Zurich is the largest hub.

This list covers infrastructure consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

717Companies

11,520Contacts tracked

5,256Verified emails

207Mobile numbers

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The 25 largest infrastructure consulting firms based in Switzerland

Ranked by team size

Top 25 of 717 infrastructure consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ARX Smart MindsIndirect evidence	Grono, SwitzerlandHQ checked Sep 3, 2026	1,001-5,000	775
	“We are a comprehensive network of specialists, expanding as we integrate talent and expertise.” Source: company website · checked Sep 3, 2026
2	Amstein WalthertIndirect evidence	Zurich, SwitzerlandHQ checked Sep 3, 2026	1,001-5,000	562
	“Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.” Source: company website · checked Sep 3, 2026
3	WSP In SwitzerlandIndirect evidence	Lausanne, SwitzerlandHQ checked Sep 3, 2026	501-1,000	448
	“We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Source: company website · checked Sep 3, 2026
4	EBP SchweizPartial evidence	Zurich, SwitzerlandHQ checked Sep 3, 2026	201-500	370
	“As an international consulting and engineering company, we stand out by our combined excellence to deliver forward-thinking solutions for our clients' most complex challenges.” Source: company website · checked Sep 3, 2026
5	Emch Berger GroupPartial evidence	Bern, SwitzerlandHQ checked Sep 3, 2026	501-1,000	284
	“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: company website · checked Sep 3, 2026
6	Lombardi Engineering SwitzerlandPartial evidence	Bellinzona-giubiasco, SwitzerlandHQ checked Sep 3, 2026	201-500	277
	“Lombardi Switzerland is a leading engineering company with over 400 skilled engineers and technicians delivering multidisciplinary and specialized services in infrastructure and…” Source: company website · checked Sep 3, 2026
7	HolingerIndirect evidence	Liestal, SwitzerlandHQ checked Sep 3, 2026	501-1,000	264
	“For over 90 years, HOLINGER has been solving engineering and scientific tasks in various specialist areas related to the water cycle.” Source: company website · checked Sep 3, 2026
8	Amaris ConsultingPartial evidence	Geneva, SwitzerlandHQ checked Sep 3, 2026	5,001-10,000	213
	“Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Source: company website · checked Sep 3, 2026
9	Amberg EngineeringIndirect evidence	Regensdorf, SwitzerlandHQ checked Sep 3, 2026	51-200	212
	“Amberg Engineering is a specialised engineering firm for the design and project management of underground works.” Source: company website · checked Sep 3, 2026
10	Rapp AGIndirect evidence	Basel, SwitzerlandHQ checked Sep 3, 2026	201-500	209
	“Unsere Welt ist im Wandel.” Source: company website · checked Sep 3, 2026
11	Alten SwitzerlandPartial evidence	SwitzerlandHQ checked Sep 3, 2026	10001+	169
	“ALTEN, the European leader in engineering and technology consulting, provides support for its clients’ development strategies in the fields of innovation, R&D and it systems.” Source: company website · checked Sep 3, 2026
12	Drees & Sommer SwitzerlandStrong evidence	Zürich, SwitzerlandHQ checked Sep 3, 2026	201-500	165
	“Drees & Sommer Switzerland is a consulting company providing a single source of consultation and implementation services for the real estate, infrastructure and industrial markets.” Source: company website · checked Sep 3, 2026
13	B S AGIndirect evidence	Bern 16, SwitzerlandHQ checked Sep 3, 2026	201-500	160
	“Die B+S AG ist ein innovatives und zukunftsorientiertes Schweizer Planungsunternehmen mit rund 330 Mitarbeitenden an den Standorten Bern, Zürich und Luzern.” Source: company website · checked Sep 3, 2026
14	IUB Engineering LTDPartial evidence	Bern 14, SwitzerlandHQ checked Sep 3, 2026	201-500	156
	“IUB Engineering AG has been an overall planner for infrastructure systems for over 50 years.” Source: company website · checked Sep 3, 2026
15	PROSEPartial evidence	Winterthur, SwitzerlandHQ checked Sep 3, 2026	51-200	152
	“We offer independent engineering and consulting services with unique expertise in railway technology.” Source: company website · checked Sep 3, 2026
16	Jauslin Stebler AGIndirect evidence	Muttenz, SwitzerlandHQ checked Sep 3, 2026	51-200	108
	“Die komplexen Rahmenbedingungen erfordern eine ganzheitliche Sicht der Probleme, kreative Prozesse und eine entsprechend eingespielte Organisation.” Source: company website · checked Sep 3, 2026
17	WillersPartial evidence	Stadtkreis 9, SwitzerlandHQ checked Sep 3, 2026	51-200	83
	“Willers is an international engineering company for high-tech buildings and infrastructures.” Source: company website · checked Sep 3, 2026
18	Bänziger Partner Ag, Ingenieure PlanerIndirect evidence	Buchs, SwitzerlandHQ checked Sep 3, 2026	51-200	81
	“1959 durch Dialma Jakob Bänziger gegründet - heute eine der führenden Bauingenieurfirmen in der Schweiz.” Source: company website · checked Sep 3, 2026
19	Wälli AG IngenieureIndirect evidence	Arbon, SwitzerlandHQ checked Sep 3, 2026	201-500	79
	“Wissen, Innovation, Nähe.” Source: company website · checked Sep 3, 2026
20	Alpineo ConsultingPartial evidence	Vernier, SwitzerlandHQ checked Sep 3, 2026	51-200	70
	“Alpineo Consulting délivre une expertise à forte valeur ajoutée à travers l’intervention de ses équipes de consultants spécialistes des métiers Technologiques & Industriels.” Source: company website · checked Sep 3, 2026
21	Betelec SAIndirect evidence	Villars-ste-croix, SwitzerlandHQ checked Sep 3, 2026	51-200	69
	“Nous sommes une entreprise qui a pour but l'ingénierie, le conseil, la conception, l'établissement de projets, la direction des travaux et l'exploitation dans le domaine des…” Source: company website · checked Sep 3, 2026
22	Gähler UND Partner AGIndirect evidence	Ennetbaden, SwitzerlandHQ checked Sep 3, 2026	51-200	68
	“Gähler Partner steht für ganzheitliches Denken im Planen und Bauen.” Source: company website · checked Sep 3, 2026
23	Boess GruppeIndirect evidence	Bern, SwitzerlandHQ checked Sep 3, 2026	51-200	67
	“Wir sind nicht nur Elektroingenieure.” Source: company website · checked Sep 3, 2026
24	Locher IngenieureIndirect evidence	Zurich, SwitzerlandHQ checked Sep 3, 2026	51-200	67
	“In der Bearbeitung von interdisziplinären Grossprojekten bis zu kleinen «Eine-Person-Projekten» bietet Locher Ingenieure das ideale Umfeld.” Source: company website · checked Sep 3, 2026
25	DSP Ingenieure & Planer AGIndirect evidence	Uster, SwitzerlandHQ checked Sep 3, 2026	51-200	66
	“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: company website · checked Sep 3, 2026

Showing 25 of 717 infrastructure consulting firms based in Switzerland

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Infrastructure consulting firms based in Switzerland at a glance

As of Sep 3, 2026

1-10Median size (employees)

ZurichLargest hub · 85 HQs

207Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

396

11-50

225

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

474

61–90

3,117

90–180

1,646

180+

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 consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among infrastructure consulting firms, 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 an evidence 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, 5,256 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 3, 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 consulting firms by metro

Infrastructure consulting firms in Zurich85
Infrastructure consulting firms in Lausanne32

Frequently asked

How many infrastructure consulting firms are there based in Switzerland?

RevenueBase identified 717 infrastructure consulting firms 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?

ARX Smart Minds, headquartered in Rapperswil Sg, tops this list with the largest team on record.

Which city has the most infrastructure consulting firms?

Zurich leads with 85 headquartered companies, followed by Lausanne (32) and Bern (19).

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 5,256 verified decision-maker contacts tracked across these 717 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 3, 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.