Company lists · Data refreshed September 2026

Top 25 Refinery engineering firms based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 275 companies tracked

RevenueBase identified 275 company matches for refinery engineering firms associated with Switzerland as of September 2026 and tracks 3,206 professional contacts across them, including 1,578 with verified work emails. Zurich is the largest hub.

This list covers company matches for refinery engineering firms associated with Switzerland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

275Companies

3,206Contacts tracked

1,578Verified emails

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The 25 largest refinery engineering firms based in Switzerland

Ranked by team size

Top 25 of 275 company matches for refinery engineering firms based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Amstein Walthert	Exact match	Zurich, SwitzerlandHQ recorded Sep 17, 2026	1,001-5,000	563 contacts →
	Exact match “Ü Ingenieurskunst bedeutet, mit Ressourcen richtig umzugehen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Gruner Stucky LTD	Exact match	Renens, SwitzerlandHQ recorded Sep 17, 2026	1,001-5,000	288 contacts →
	Exact match “Gruner Stucky Ltd (formerly Stucky Ltd) is a Swiss-based international consulting engineering company active in energy, infrastructure and buildings.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Holinger	Exact match	Liestal, SwitzerlandHQ recorded Sep 17, 2026	501-1,000	265 contacts →
	Exact match “For over 90 years, HOLINGER has been solving engineering and scientific tasks in various specialist areas related to the water cycle.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	IUB Engineering LTD	Exact match	Bern 14, SwitzerlandHQ recorded Sep 17, 2026	201-500	156 contacts →
	Exact match “IUB Engineering AG has been an overall planner for infrastructure systems for over 50 years.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Betelec SA	Exact match	Villars-ste-croix, SwitzerlandHQ recorded Sep 17, 2026	51-200	69 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Boess Gruppe	Exact match	Bern, SwitzerlandHQ recorded Sep 17, 2026	51-200	67 contacts →
	Exact match “Wir sind nicht nur Elektroingenieure.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	B3 Engineering UND Management AM BAU	Exact match	Wil, SwitzerlandHQ recorded Sep 17, 2026	51-200	58 contacts →
	Exact match “Bauprojekte sind Teamleistungen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	SP Groups Engineering	Exact match	1920 Martigny, SwitzerlandHQ recorded Sep 17, 2026	51-200	57 contacts →
	Exact match “From the first reflection to the achievement, you can trust our expertise for your ambitious projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Techfirm Industrial Services	Exact match	Geneva, SwitzerlandHQ recorded Sep 17, 2026	201-500	57 contacts →
	Exact match “Since 1998, Techfirm Industrial Services is an independent Swiss engineering consulting company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Weinmann-Energies SA	Exact match	Echallens, SwitzerlandHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	ZPF Ingenieure AG	Exact match	Basel, SwitzerlandHQ recorded Sep 17, 2026	51-200	37 contacts →
	Exact match “The art of engineering.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Added Value Engineering	Exact match	Martigny, SwitzerlandHQ recorded Sep 17, 2026	11-50	33 contacts →
	Exact match “Revolutionize your industry with our sustainable and innovative solutions for chemistry, pharma, food, and microtechnology.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Evolve	Exact match	Bellinzona, SwitzerlandHQ recorded Sep 17, 2026	11-50	31 contacts →
	Exact match “Evolve SA è una società di ingegneria svizzera con oltre 15 anni di esperienza nella progettazione tecnica, realizzazione e gestione di edifici e infrastrutture.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Henauer Gugler AG	Exact match	Zürich, SwitzerlandHQ recorded Sep 17, 2026	51-200	31 contacts →
	Exact match “1922 von Ernst Rathgeb gegründet, hat unser Unternehmen bereits in frühen Jahren an wichtigen Bauwerken wie z.B.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Energa SA	Exact match	Lausanne, SwitzerlandHQ recorded Sep 17, 2026	11-50	29 contacts →
	Exact match “Situé à Yverdon-les-Bains et à Lausanne, ENERGA SA est un bureau d’ingénieurs-conseils EPFL-SIA actif sur l’ensemble de la Suisse romande.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	AZ Ingénieurs SA	Exact match	Lausanne 10, SwitzerlandHQ recorded Sep 17, 2026	11-50	27 contacts →
	Exact match “La marque az ingénieurs regroupe des sociétés privées réunissant des ingénieurs-conseils dans les domaines de l'énergie, de la sécurité et des installations techniques pour le…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Flückiger Bosshard AG	Exact match	Zürich, SwitzerlandHQ recorded Sep 17, 2026	51-200	27 contacts →
	Exact match “Die Tradition der Flückiger + Bosshard AG, als Teil einer innovativen, leistungsstarken und unabhängigen Ingenieurgruppe im Ingenieurbau reicht zurück bis ins Jahr 1964.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Durena AG	Exact match	Lenzburg, SwitzerlandHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “Unserem Ingenieurunternehmen ist es ein grosses Anliegen, individuell und persönlich auf Ihre Wünsche einzugehen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Tecnoservice Engineering SA	Exact match	Fribourg, SwitzerlandHQ recorded Sep 17, 2026	51-200	26 contacts →
	Exact match “TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	PEG	Exact match	Lancy, SwitzerlandHQ recorded Sep 17, 2026	51-200	25 contacts →
	Exact match “PEG is an Independent Engineering Consultant specializing in Cement, Environment and Infrastructure projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Cement Engineering SA Cesa	Exact match	Geneve Carouge, SwitzerlandHQ recorded Sep 17, 2026	11-50	24 contacts →
	Exact match “Cement Engineering SA (CESA) Engineering is a professionals business!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	C S Ingenieure AG	Exact match	Hasle B.b., SwitzerlandHQ recorded Sep 17, 2026	51-200	22 contacts →
	Exact match “Wir sind ein Team von Ingenieuren, Bautechnikern und qualifizierten Bauzeichnern und Ihr Ansprechpartner für alle Aufgaben im Ingenieurbau.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Grünig&partner AG	Exact match	Liebefeld, SwitzerlandHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match “Wir von Grünig & Partner haben eine Passion: die Gebäudetechnik.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Encom AG	Exact match	Pfäffikon, SwitzerlandHQ recorded Sep 17, 2026	11-50	21 contacts →
	Exact match “Neue Produkte, Maschinen und Anlagen zu entwickeln und bestehende zu optimieren, das ist unsere Kompetenz und Leidenschaft.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	HINE	Exact match	Münchenstein, SwitzerlandHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “Herzlich willkommen bei HINE – Ihrem führenden Experten für das präzise Planen von verfahrenstechnischen Anlagen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “refinery engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 275 refinery engineering firms based in Switzerland

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Refinery engineering firms based in Switzerland at a glance

As of Sep 17, 2026

49.2%Verified-email coverage

11.7Average contacts per company

1-10Median size (employees)

5.1%Largest-city concentration · Zurich

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

158

11-50

51-200

201-500

501-1,000

1,001-5,000

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 275 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Switzerland whose business descriptions match “refinery engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,578 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “refinery engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery engineering firms are there based in Switzerland?

RevenueBase identified 275 company matches for refinery engineering firms associated with Switzerland as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Amstein Walthert tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery engineering firms?

Zurich leads with 14 company records, followed by Lausanne (10) and Geneva (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,578 professional contacts with verified work emails tracked across these 275 companies; direct dials are available where recorded.

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 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.