Company lists · Data refreshed September 2026

Top 25 Big IT consulting firms based in Germany

Name: Big IT consulting firms based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 3,672 companies tracked

RevenueBase identified 3,672 big IT consulting firms headquartered in Germany as of September 2026 and tracks 104,101 professional contacts across them, including 42,856 with verified work emails and 2,034 with mobile numbers. Berlin is the largest hub.

This list covers big IT consulting firms headquartered in Germany, 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 23, 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 23, 2026 86% judged on-target in blind review

3,672Companies

104,101Contacts tracked

42,856Verified emails

2,034Mobile numbers

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

The 25 largest big IT consulting firms based in Germany

Ranked by team size

Top 25 of 3,672 big IT consulting firms based in Germany, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big IT consulting 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	NTT Data Business Solutions	Partial evidence	Bielefeld, GermanyHQ checked Sep 23, 2026	10001+	10,733 contacts →
	Partial evidence “We understand the business of our clients and know what it takes to transform it into the future.” Source: RevenueBase Database · checked Sep 23, 2026
2	T-Systems International	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 23, 2026	10001+	10,154 contacts →
	Indirect evidence “Your digitalization partner with industry expertise With locations in more than 26 countries and over employees (2024), T-Systems is one of the leading providers of digital…” Source: RevenueBase Database · checked Sep 23, 2026
3	Adesso SE	Indirect evidence	Dortmund, GermanyHQ checked Sep 23, 2026	5,001-10,000	5,332 contacts →
	Indirect evidence “The future belongs to companies that effectively translate agentic AI into value creation.” Source: RevenueBase Database · checked Sep 23, 2026
4	Bechtle	Partial evidence	Neckarsulm, GermanyHQ checked Sep 23, 2026	10001+	4,690 contacts →
	Partial evidence “Bechtle is one of Europe’s leading IT service providers.” Source: RevenueBase Database · checked Sep 23, 2026
5	Accenture Dach	Indirect evidence	Kronberg Im Taunus, GermanyHQ checked Sep 23, 2026	10001+	3,644 contacts →
	Indirect evidence “Über Accenture: Wir sind die weltweit führenden Berater für Strategie, Management, Digitalisierung, Technologie, Outsourcing und Business Transformation.” Source: RevenueBase Database · checked Sep 23, 2026
6	Arvato Systems	Indirect evidence	Gütersloh, GermanyHQ checked Sep 23, 2026	1,001-5,000	2,537 contacts →
	Indirect evidence “We are Arvato Systems - and we live digitalization.” Source: RevenueBase Database · checked Sep 23, 2026
7	P3	Partial evidence	Stuttgart, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,468 contacts →
	Partial evidence “P3 group is an independent, owner-managed technology and management consulting group founded in 1996.” Source: RevenueBase Database · checked Sep 23, 2026
8	Valantic	Partial evidence	80801, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,271 contacts →
	Partial evidence “About valantic valantic is one of the fastest growing digital solutions, consulting, and software companies on the market.” Source: RevenueBase Database · checked Sep 23, 2026
9	Materna	Partial evidence	Dortmund, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,196 contacts →
	Partial evidence “Als international erfolgreicher IT-Dienstleister beraten und begleiten wir Unternehmen und Behörden in allen Belangen der Digitalisierung.” Source: RevenueBase Database · checked Sep 23, 2026
10	Umlaut Company	Indirect evidence	Aachen, GermanyHQ checked Sep 23, 2026	1,001-5,000	1,195 contacts →
	Indirect evidence “Accenture is a leading global professional services company that helps the world’s leading businesses, governments and other organizations build their digital core, optimize their…” Source: RevenueBase Database · checked Sep 23, 2026
11	ZEB Consulting	Partial evidence	Münster, GermanyHQ checked Sep 23, 2026	501-1,000	1,055 contacts →
	Partial evidence “As a leading strategy, management and IT consultancy, zeb has been offering transformation expertise along the entire value chain in the financial services sector in Europe since…” Source: RevenueBase Database · checked Sep 23, 2026
12	NETGO	Indirect evidence	Berlin, GermanyHQ checked Sep 23, 2026	1,001-5,000	957 contacts →
	Indirect evidence “netgo entwickelt Strategien und Lösungen, die Menschen und ihr Business erfolgreich machen.” Source: RevenueBase Database · checked Sep 23, 2026
13	ALL For ONE	Strong evidence	Filderstadt-bernhausen, GermanyHQ checked Sep 23, 2026	1,001-5,000	949 contacts →
	Strong evidence “TURNING TECHNOLOGY INTO BUSINESS SUCCESS Die All for One Group ist ein führender internationaler IT, Consulting- und Service-Provider rund um SAP – und darüber hinaus.” Source: RevenueBase Database · checked Sep 23, 2026
14	Exxeta	Partial evidence	Karlsruhe, GermanyHQ checked Sep 23, 2026	1,001-5,000	946 contacts →
	Partial evidence “Exxeta is a technology and consulting company with a passion for innovation.” Source: RevenueBase Database · checked Sep 23, 2026
15	BCG Platinion	Indirect evidence	Cologne, GermanyHQ checked Sep 23, 2026	1,001-5,000	925 contacts →
	Indirect evidence “At BCG Platinion, we leverage our expertise alongside the unique experiences of our teams to accelerate digital transformations for our clients.” Source: RevenueBase Database · checked Sep 23, 2026
16	BTC	Partial evidence	Oldenburg, GermanyHQ checked Sep 23, 2026	1,001-5,000	833 contacts →
	Partial evidence “We are more than the sum of many IT experts, consultants, software developers and system administrators.” Source: RevenueBase Database · checked Sep 23, 2026
17	Senacor Technologies	Strong evidence	Eschborn, GermanyHQ checked Sep 23, 2026	1,001-5,000	787 contacts →
	Strong evidence “Senacor is part of the 25 leading IT-Consulting companies and among the Top 5 of the medium-sized IT-Service providers in Germany and runs 10 offices in Austria, Switzerland…” Source: RevenueBase Database · checked Sep 23, 2026
18	TNG Technology Consulting	Partial evidence	Unterföhring, GermanyHQ checked Sep 23, 2026	501-1,000	773 contacts →
	Partial evidence “TNG Technology Consulting is a values-based consulting partnership focused on high-end information technology.” Source: RevenueBase Database · checked Sep 23, 2026
19	Maibornwolff Gmbh	Strong evidence	München, GermanyHQ checked Sep 23, 2026	501-1,000	728 contacts →
	Strong evidence “MaibornWolff has been inspiring clients from all industries in IT consulting, software engineering and test management for over 30 years.” Source: RevenueBase Database · checked Sep 23, 2026
20	Detecon	Indirect evidence	Cologne, GermanyHQ checked Sep 23, 2026	1,001-5,000	721 contacts →
	Indirect evidence “Detecon makes the future possible, digital, interconnected, and human.” Source: RevenueBase Database · checked Sep 23, 2026
21	CONET	Indirect evidence	Bonn, GermanyHQ checked Sep 23, 2026	1,001-5,000	718 contacts →
	Indirect evidence “Leading forward: conet is the reliable digitalization partner for public administration, the defense sector, and companies in the automotive, finance & insurance, energy &…” Source: RevenueBase Database · checked Sep 23, 2026
22	Metafinanz	Strong evidence	Munich, GermanyHQ checked Sep 23, 2026	501-1,000	673 contacts →
	Strong evidence “For over 35 years, metafinanz Informationssysteme GmbH, a business and IT consulting company, has been at the side of its customers in an increasingly digital and dynamic world.” Source: RevenueBase Database · checked Sep 23, 2026
23	Cloudflight	Indirect evidence	Munich, GermanyHQ checked Sep 23, 2026	501-1,000	608 contacts →
	Indirect evidence “Cloudflight is one of the leading full-service providers in the field of industrial digital transformation.” Source: RevenueBase Database · checked Sep 23, 2026
24	Konica Minolta Business Solutions Europe Gmbh	Indirect evidence	Langenhagen, GermanyHQ checked Sep 23, 2026	5,001-10,000	582 contacts →
	Indirect evidence “How to shape your business to prosper in the digital The answer lies in creating an environment for great ideas to develop and then nurturing them with the relevant information so…” Source: RevenueBase Database · checked Sep 23, 2026
25	Convista	Indirect evidence	Walldorf, GermanyHQ checked Sep 23, 2026	501-1,000	553 contacts →
	Indirect evidence “Convista is one of the leading consultancies for business transformation.” Source: RevenueBase Database · checked Sep 23, 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: big IT consulting 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 big IT consulting firms.
Partial evidence: Its own public description names part of big IT consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big IT consulting 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 3,672 big IT consulting firms based in Germany

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 42,856 reachable decision-makers.

Free signup · no credit card

View the full list →

Big IT consulting firms based in Germany at a glance

As of Sep 23, 2026

41.2%Verified-email coverage

2.0%Mobile-number coverage

28.3Average contacts per company

1-10Median size (employees)

7.2%Largest-city concentration · Berlin

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

2,067

11-50

1,052

51-200

348

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

31,9440–30

9,97831–60

58461–90

1790–180

333180+

Company record updated

Median 75.0d

00–30

30,66831–60

47,30661–90

20,18190–180

5,946180+

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 big IT consulting 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 Germany whose own description of what they do matches “big IT consulting 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 big IT consulting 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 big IT consulting firms, and records with no verified work email. Companies headquartered outside Germany 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, 42,856 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 23, 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.

Big IT consulting firms by metro

Big IT consulting firms in Berlin263
Big IT consulting firms in Hamburg214
Big IT consulting firms in Munchen148
Big IT consulting firms in Dusseldorf101
Big IT consulting firms in Munich94
Big IT consulting firms in Koln84
Big IT consulting firms in Stuttgart81
Big IT consulting firms in Frankfurt Am Main64
Big IT consulting firms in Frankfurt46
Big IT consulting firms in Hannover42
Big IT consulting firms in Karlsruhe39
Big IT consulting firms in Bonn34
Big IT consulting firms in Bremen33
Big IT consulting firms in Mannheim33
Big IT consulting firms in Dortmund30
Big IT consulting firms in Bielefeld29
Big IT consulting firms in Braunschweig29
Big IT consulting firms in Wiesbaden29
Big IT consulting firms in Dresden28
Big IT consulting firms in Munster27
Big IT consulting firms in Cologne26
Big IT consulting firms in Eschborn25

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 big IT consulting 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 big IT consulting firms are there based in Germany?

RevenueBase identified 3,672 big IT consulting firms headquartered in Germany 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?

NTT Data Business Solutions, headquartered in Bielefeld, tops this list with the largest team on record.

Which city has the most big IT consulting firms?

Berlin leads with 263 headquartered companies, followed by Hamburg (214) and Munchen (148).

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 42,856 verified decision-maker contacts tracked across these 3,672 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 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,672 big IT consulting firms based in Germany. Start with a free account, no credit card.

Download this list →

Related lists

Big IT consulting 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.