Company lists · Data refreshed September 2026

Top 24 Infrastructure consulting firms based in Austria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 245 companies tracked

RevenueBase identified 245 infrastructure consulting firms headquartered in Austria as of September 2026 and tracks 8,231 professional contacts across them, including 2,326 with verified work emails and 399 with mobile numbers. Wien is the largest hub.

This list covers infrastructure consulting firms headquartered in Austria, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

245Companies

8,231Contacts tracked

2,326Verified emails

399Mobile numbers

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The 24 largest infrastructure consulting firms based in Austria

Ranked by team size

Top 24 of 245 infrastructure consulting firms based in Austria, 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	ILF Consulting EngineersStrong evidence	Worldwide, AustriaHQ checked Sep 3, 2026	1,001-5,000	1,752
	“The ILF Group (ILF) is an international engineering and consulting firm that helps its clients successfully execute technically demanding industrial and infrastructure projects.” Source: company website · checked Sep 3, 2026
2	IC Consulenten ZT GesmbhIndirect evidence	Vienna, AustriaHQ checked Sep 3, 2026	501-1,000	229
	“Complex projects and tasks demand integrative solutions based on a broad spectrum of experience.” Source: company website · checked Sep 3, 2026
3	Geoconsult Consulting EngineersStrong evidence	Puch Bei Hallein, AustriaHQ checked Sep 3, 2026	201-500	212
	“GC GROUP is an independent and family-owned global business offering integrated engineering and consulting services for infrastructure projects.” Source: company website · checked Sep 3, 2026
4	IKK Group GmbhPartial evidence	Graz, AustriaHQ checked Sep 3, 2026	51-200	105
	“Consulting services, planning and management of traffic and transportation systems, building engineering and industrial construction” Source: company website · checked Sep 3, 2026
5	Bacher SystemsPartial evidence	Wien, AustriaHQ checked Sep 3, 2026	51-200	81
	“Wir unterstützen unsere Kunden als Denkpartner in wichtigen IT-Bereichen: sicheres Nutzen der Cloud, IT-Security, Data Infrastructure und im Bereich Data Analytics.” Source: company website · checked Sep 3, 2026
6	Werner ConsultIndirect evidence	Vienna, AustriaHQ checked Sep 3, 2026	51-200	61
	“Planmäßig zum Erfolg!” Source: company website · checked Sep 3, 2026
7	Syngroup Management ConsultingIndirect evidence	Vienna, AustriaHQ checked Sep 3, 2026	51-200	50
	“Syngroup consultants advise and accompany customers worldwide delivering efficiency and excellence in all areas, across Great Britain, Italy, the US and Chile.” Source: company website · checked Sep 3, 2026
8	Vace GroupIndirect evidence	Linz, AustriaHQ checked Sep 3, 2026	501-1,000	44
	“Die VACE GROUP ist eines der führenden österreichischen Technologie- und Personalberatungsunternehmen.” Source: company website · checked Sep 3, 2026
9	Allplan GmbhIndirect evidence	Vienna, AustriaHQ checked Sep 3, 2026	51-200	38
	“ALLPLAN GmbH was founded in Vienna in 1967.” Source: company website · checked Sep 3, 2026
10	Schneider Consult Ziviltechniker GmbhIndirect evidence	Krems, AustriaHQ checked Sep 3, 2026	51-200	28
	“SCHNEIDER CONSULT ist eine Ingenieurgesellschaft mit Sitz in KREMS und Bürostandorten in LINZ und AMSTETTEN (Österreich) mit rund 60 MitarbeiterInnen.” Source: company website · checked Sep 3, 2026
11	Posedio GmbhPartial evidence	Vienna, AustriaHQ checked Sep 3, 2026	11-50	25
	“With our expertise and focus on results, Posedio goes beyond traditional consulting.” Source: company website · checked Sep 3, 2026
12	Posch & Partners Consulting EngineersIndirect evidence	Innsbruck, AustriaHQ checked Sep 3, 2026	11-50	23
	“Posch & Partners core competence lies within the vital and overlapping fields of water, energy and environment.” Source: company website · checked Sep 3, 2026
13	Hipi ZT GmbhIndirect evidence	Vöcklabruck, AustriaHQ checked Sep 3, 2026	11-50	22
	“Ziviltechniker GmbH, Ingenieurleistungen im Bereich Siedlungswasserbau, Abwasserreinigung und Verfahrenstechnik, Hochwasserschutz, Straßenplanung, Vermessung und…” Source: company website · checked Sep 3, 2026
14	42virtualPartial evidence	Wien, AustriaHQ checked Sep 3, 2026	11-50	21
	“42virtual is a consulting company specialized of delivering individual approaches to client's problems.” Source: company website · checked Sep 3, 2026
15	Laabmayr ZT GmbhPartial evidence	Salzburg, AustriaHQ checked Sep 3, 2026	51-200	19
	“We are independent consulting engineers specialized in the planning and realization of tunnel projects and underground openings of all sizes and in all environments.” Source: company website · checked Sep 3, 2026
16	Woschitz GroupIndirect evidence	Wien, AustriaHQ checked Sep 3, 2026	51-200	19
	“WE ADD STABILITY TO VISION.” Source: company website · checked Sep 3, 2026
17	Poesis Consulting GmbhPartial evidence	Klaus, AustriaHQ checked Sep 3, 2026	11-50	18
	“Poesis Consulting hat sich aus der traditionellen Strategieberatung entwickelt mit unseren Wurzeln bei McKinsey, Boston Consulting Group sowie der Hochschule St.” Source: company website · checked Sep 3, 2026
18	Convex ZT GmbhIndirect evidence	Graz, AustriaHQ checked Sep 3, 2026	11-50	18
	“We take care of your construction project from its beginning to its end: we create feasibility studies, basic designs, cost estimates, permit and tender designs as well as detail…” Source: company website · checked Sep 3, 2026
19	Ingenos ZT GmbhIndirect evidence	Gleisdorf, AustriaHQ checked Sep 3, 2026	11-50	18
	“Die ingenos ZT GmbH bietet ein breites Leistungsspektrum für bautechnische Dienstleistungen von der Projektentwicklung bis zur Bauaufsicht aus einer Hand.” Source: company website · checked Sep 3, 2026
20	Rosinak & Partner ZT GmbhIndirect evidence	Wien, AustriaHQ checked Sep 3, 2026	11-50	17
	“Wir sind Experten für Verkehr, Raum, Umwelt und Klima - Rosinak & Partner hat 35 MitarbeiterInnen in Wien und Dornbirn.” Source: company website · checked Sep 3, 2026
21	Axis Ingenieurleistungen ZT GmbhIndirect evidence	Wien, Austria	51-200	17
	“As a leading company in the construction industry, we offer all services from a single source as developers, planners and consultants.” Source: company website · checked Sep 3, 2026
22	Wallner & Schemitsch Ingenieure GmbhIndirect evidence	Graz, AustriaHQ checked Sep 3, 2026	51-200	16
	“Wallner & Schemitsch – Ihr Partner für anspruchsvolle Bauprojekte.” Source: company website · checked Sep 3, 2026
23	Allplan Civil Competence Center Allplan InfrastructureStrong evidence	Graz, AustriaHQ checked Sep 3, 2026	11-50	16
	“Competence Center Allplan Infrastructure from ALLPLAN represents a consulting and software development company, specialized in bridge engineering.” Source: company website · checked Sep 3, 2026
24	Nievelt Labor GmbhIndirect evidence	Hobersdorf, AustriaHQ checked Sep 3, 2026	51-200	15
	“Unsere Unternehmen sind seit mehr als 40 Jahren als nationale und internationale Dienstleister im Bauwesen erfolgreich tätig.” Source: company website · checked Sep 3, 2026

Showing 24 of 245 infrastructure consulting firms based in Austria

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Infrastructure consulting firms based in Austria at a glance

As of Sep 3, 2026

1-10Median size (employees)

WienLargest hub · 47 HQs

399Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

136

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

31–60

173

61–90

1,325

90–180

765

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 Austria 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 Austria 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, 2,326 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 Wien47

Frequently asked

How many infrastructure consulting firms are there based in Austria?

RevenueBase identified 245 infrastructure consulting firms headquartered in Austria 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?

ILF Consulting Engineers, headquartered in Linz, tops this list with the largest team on record.

Which city has the most infrastructure consulting firms?

Wien leads with 47 headquartered companies, followed by Graz (20) and Vienna (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 2,326 verified decision-maker contacts tracked across these 245 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.