Company lists · Data refreshed September 2026

Top 25 Infrastructure design firms based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 379 companies tracked

RevenueBase identified 379 infrastructure design firms headquartered in Switzerland as of September 2026 and tracks 9,114 professional contacts across them, including 4,435 with verified work emails. Zurich is the largest hub.

This list covers infrastructure design 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 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 20, 2026 86% judged on-target in blind review

379Companies

9,114Contacts tracked

4,435Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest infrastructure design firms based in Switzerland

Ranked by team size

Top 25 of 379 infrastructure design firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure design firms: 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 20, 2026	1,001-5,000	563 contacts →
	Indirect evidence “Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.” Source: RevenueBase Database · checked Sep 20, 2026
2	Gruner	Indirect evidence	Basel, SwitzerlandHQ checked Sep 20, 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 20, 2026
3	Basler & Hofmann	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 20, 2026	501-1,000	433 contacts →
	Indirect evidence “We are an independent engineering, planning and consulting company.” Source: RevenueBase Database · checked Sep 20, 2026
4	EBP Schweiz	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	201-500	374 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 20, 2026
5	Emch Berger Group	Partial evidence	Bern, SwitzerlandHQ checked Sep 20, 2026	501-1,000	283 contacts →
	Partial 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 20, 2026
6	TBF Partner AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 20, 2026	201-500	282 contacts →
	Indirect evidence “Für gesellschaftlich relevante Lösungen, die auch morgen überzeugen.” Source: RevenueBase Database · checked Sep 20, 2026
7	Lombardi Engineering Switzerland	Partial evidence	Bellinzona-giubiasco, SwitzerlandHQ checked Sep 20, 2026	201-500	276 contacts →
	Partial 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 20, 2026
8	Rapp AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 20, 2026	201-500	210 contacts →
	Indirect evidence “Unsere Welt ist im Wandel.” Source: RevenueBase Database · checked Sep 20, 2026
9	B S AG	Indirect evidence	Bern 16, SwitzerlandHQ checked Sep 20, 2026	201-500	158 contacts →
	Indirect evidence “Die B+S AG ist ein innovatives und zukunftsorientiertes Schweizer Planungsunternehmen mit rund 330 Mitarbeitenden an den Standorten Bern, Zürich und Luzern.” Source: RevenueBase Database · checked Sep 20, 2026
10	IUB Engineering LTD	Partial evidence	Bern 14, SwitzerlandHQ checked Sep 20, 2026	201-500	156 contacts →
	Partial evidence “IUB Engineering AG has been an overall planner for infrastructure systems for over 50 years.” Source: RevenueBase Database · checked Sep 20, 2026
11	Jauslin Stebler AG	Indirect evidence	Muttenz, SwitzerlandHQ checked Sep 20, 2026	51-200	108 contacts →
	Indirect evidence “Die komplexen Rahmenbedingungen erfordern eine ganzheitliche Sicht der Probleme, kreative Prozesse und eine entsprechend eingespielte Organisation.” Source: RevenueBase Database · checked Sep 20, 2026
12	Bänziger Partner Ag, Ingenieure Planer	Indirect evidence	Buchs, SwitzerlandHQ checked Sep 20, 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 20, 2026
13	Metron AG	Indirect evidence	Brugg, SwitzerlandHQ checked Sep 20, 2026	51-200	81 contacts →
	Indirect evidence “Metron ist ein unabhängiges Architektur- und Planungsbüro in den Bereichen Raumentwicklung, Landschafts- und Verkehrsplanung, Freiraumgestaltung, Städtebau und Architektur.” Source: RevenueBase Database · checked Sep 20, 2026
14	Willers	Partial evidence	Stadtkreis 9, SwitzerlandHQ checked Sep 20, 2026	51-200	81 contacts →
	Partial evidence “Willers is an international engineering company for high-tech buildings and infrastructures.” Source: RevenueBase Database · checked Sep 20, 2026
15	Santiago Calatrava LLC	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	201-500	71 contacts →
	Indirect evidence “Santiago Calatrava, a celebrated architect, engineer, and artist, launched Calatrava Valls S.A.” Source: RevenueBase Database · checked Sep 20, 2026
16	SD Ingénierie	Indirect evidence	Suisse-romande, SwitzerlandHQ checked Sep 20, 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 20, 2026
17	Boess Gruppe	Indirect evidence	Bern, SwitzerlandHQ checked Sep 20, 2026	51-200	67 contacts →
	Indirect evidence “Wir sind nicht nur Elektroingenieure.” Source: RevenueBase Database · checked Sep 20, 2026
18	Locher Ingenieure	Indirect evidence	Stadtkreis 1 Altstadt, SwitzerlandHQ checked Sep 20, 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 20, 2026
19	DSP Ingenieure & Planer AG	Indirect evidence	Uster, SwitzerlandHQ checked Sep 20, 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 20, 2026
20	Project Partners LTD Consulting Engineers	Indirect evidence	Lugano, SwitzerlandHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect 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 20, 2026
21	Mawi Group SA	Indirect evidence	Bellinzona, SwitzerlandHQ checked Sep 20, 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 20, 2026
22	Ingphi Concepteurs D'ouvrages D'art	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 20, 2026	51-200	52 contacts →
	Partial evidence “INGPHI - Concepteurs d'ouvrages Bureau d'ingénieurs & architectes Pont · Bâtiments · Infrastructures INGPHI est un bureau d’ingénieurs civils spécialisé dans la conception et la…” Source: RevenueBase Database · checked Sep 20, 2026
23	Suisseplan	Indirect evidence	Aarau Luzern Wohlen Zürich, SwitzerlandHQ checked Sep 20, 2026	51-200	44 contacts →
	Indirect evidence “Mit unseren Entwicklungs, Planungs- und Gestaltungskompetenzen formen wir den Lebensraum so, dass sich die Menschen darin sicher und wohl fühlen.” Source: RevenueBase Database · checked Sep 20, 2026
24	Vanoli AG	Indirect evidence	Zofingen, SwitzerlandHQ checked Sep 20, 2026	201-500	44 contacts →
	Indirect evidence “Vanoli AG – Baukunst zum Verlieben Perfektion von der Bauplanung bis zur Bauabnahme, innovative Ideen und Liebe zum Detail in den Bereichen Bahninfrastruktur – Gleistiefbau -…” Source: RevenueBase Database · checked Sep 20, 2026
25	BSB Partner Ingenieure UND Planer AG	Indirect evidence	Biberist, SwitzerlandHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “Seit 1942 leistet BSB + Partner relevante Beiträge zu einer nachhaltigen Entwicklung und trägt dazu bei, die Zukunft umsichtig und mit langfristigem Blick zu formen.” Source: RevenueBase Database · checked Sep 20, 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 design firms. 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 design firms.
Partial evidence: Its own public description names part of infrastructure design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure design firms. 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 379 infrastructure design firms based in Switzerland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,435 reachable decision-makers.

Free signup · no credit card

View the full list →

Infrastructure design firms based in Switzerland at a glance

As of Sep 20, 2026

48.7%Verified-email coverage

24.0Average contacts per company

11-50Median size (employees)

11.6%Largest-city concentration · Zurich

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

164

11-50

144

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 379 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 design firms, 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 design firms”. 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 design firms), 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 design 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 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, 4,435 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 20, 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 design firms by metro

Infrastructure design firms in Zurich44

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 design firms, 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 design firms are there based in Switzerland?

RevenueBase identified 379 infrastructure design 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?

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

Which city has the most infrastructure design firms?

Zurich leads with 44 headquartered companies, followed by Lausanne (16) and Bern (12).

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 4,435 verified decision-maker contacts tracked across these 379 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 379 infrastructure design firms based in Switzerland. Start with a free account, no credit card.

Download this list →

Related lists

Infrastructure design firms by geography

Browse the directory

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.