The companies listed are primarily large and mid-sized IT services and consulting firms located in North Rhine-Westphalia, providing managed services across various sectors. BWI GmbH is a key IT service provider for the German Bundeswehr, while Atruvia AG specializes in digitalization for the banking sector. Arvato Systems offers international IT solutions, and ITZBund focuses on IT consolidation for the German federal government. conet provides consulting and software development, and BITMARCK serves the IT market for statutory health insurance.
A notable pattern is the strong concentration of these managed service providers in specific cities within North Rhine-Westphalia. Many companies, such as Atruvia AG, Fiducia & GAD IT AG, and Ratiodata, are headquartered in Münster. Other significant hubs include Bonn, with companies like ITZBund and conet, and Düsseldorf, home to Information und Technik Nordrhein-Westfalen and Damovo.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 4,318 | ||||
| 2 |
Atruvia AGatruvia.de
Digitalization partner in the banking sector, offering IT solutions, app development, and banking services to a wide range of financial institutions and other industries |
3,385 | |||
| 3 |
Arvato Systemsarvato-systems.com
International IT specialist supporting companies with cloud, IT operations, and process integration to create innovative, efficient, and secure digital solutions. |
3,018 | |||
| 4 |
ITZBunditzbund.de
The company is leading a comprehensive IT consolidation project for the German federal government, including centralizing IT operations, developing common applications, and establishing a federal cloud |
1,305 | |||
| 5 | 1,148 | ||||
| 6 |
Information und Technik Nordrhein-Westfalen (IT.NRW)it.nrw
Providing IT services and statistical data management for the state administration of North Rhine-Westphalia, Germany. |
1,016 | |||
| 7 |
BITMARCKbitmarck.de
This company is a managed service provider for the IT market of statutory health insurance, focusing on digitalization and innovative solutions |
1,013 | |||
| 8 |
TIMETOACT GROUPtimetoact-group.com
The company specializes in modernizing and integrating IT applications for businesses, while also designing and implementing digital business models for innovative clients |
952 | |||
| 9 |
Damovodamovo.com
Damovo is an international ICT service provider specializing in Unified Communications, Enterprise Networks, Contact Centre, Security, Cloud Services, and Global Managed Services |
889 | |||
| 10 |
q.beyond AGqbeyond.de
Provides leading IT solutions for SMEs, addressing technological challenges, making business models future-ready, and enhancing business value with proprietary AI data centers. |
634 | |||
| 11 |
Fiducia & GAD IT AGatruvia.de
An IT service provider for Germany's cooperative banks, Fiducia & GAD offers IT services for banking work stations, administers accounts, and operates ATMs |
603 | |||
| 12 |
itelligencenttdata-solutions.com
The company provides business solutions and services under the new brand since April 1, 2021 as part of NTT DATA |
557 | |||
| 13 |
Ratiodataratiodata.de
IT service provider offering tailored concepts, high-quality hardware/software/services, expertise in complex IT solutions, and digitalization with a focus on security and regulatory compliance |
527 | |||
| 14 |
Huawei Deutschlandhuawei.com
A global provider of information technology and telecommunications solutions with a focus on connectivity, computing, devices, automotive, digital power, and cloud services |
490 | |||
| 15 |
OEDIV Oetker Daten- und Informationsverarbeitung KGoediv.de
Premium provider of infrastructure solutions and managed services, focusing on Microsoft and SAP technologies, with a strong emphasis on security and customer support |
375 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
rku.it GmbHrku-it.de
A mysterious company with exciting products or services on the way, sparking curiosity and anticipation among potential customers |
357 | |||
| 17 |
QSC AGqbeyond.de
Digitizing German SMEs with cloud, consulting, outsourcing, and telecommunications services Securely guiding customers into the digital age with innovative one-stop solutions |
343 | |||
| 18 |
OPITZ CONSULTING Deutschland GmbHopitz-consulting.com
Specializes in custom applications, business intelligence, process optimization, system architecture, solution development, and 24/7 support for clients. |
334 | |||
| 19 |
Atos Information Technology GmbHatos.net
Provides management consulting services focused on improving business processes, strategies, and organizational performance for various clients. |
323 | |||
| 20 |
regio iT gesellschaft für informationstechnologie mbhregioit.de
A leading IT partner for public sector organizations, offering strategic consulting, IT infrastructure, and full-service solutions in various sectors with a focus on digitalization and employee satisfaction |
322 | |||
| 21 |
DTS Systeme GmbHdts.de
A successful IT service provider with over 40 years of experience, specializing in Cyber Security, Cloud, Managed Services, and Security Software |
280 | |||
| 22 |
plusserverplusserver.com
A managed cloud service provider helping small and medium-sized enterprises navigate digital transformation with personalized services and a multi-cloud platform |
240 | |||
| 23 | 181 | ||||
| 24 |
active logistics GmbHactive-logistics.com
Providing IT solutions tailored to the logistics industry, including supply chain applications and transport management systems, with a major data center facility |
57 | |||
| 25 |
Huawei Cloud Europehuaweicloud.com
A company offering a wide range of services through cloud technology, providing solutions for various needs |
56 | |||
| 26 |
Giant Swarmgiantswarm.io
Empowering users to build modern software, Giant Swarm offers an Open Source Cloud-Native Platform with 24/7 Management for secure and reliable operations |
50 | |||
| 27 |
telegra GmbHtelegra.com
This company specializes in providing solutions for professional customer communication, including dialog systems, plug-ins, interfaces, and APIs to enhance customer interaction and streamline processes |
42 | |||
| 28 |
Databay AGdatabay.de
An IT services company specializing in ILIAS and TYPO3 systems, web development, mobile apps, and IT services like network, hosting, and security |
33 | |||
| 29 |
tick Trading Software AGtick-ts.de
A provider of advanced and reliable trading platforms for professional customers, offering direct connections to marketplaces, market making tools, hosting infrastructure, and compliance solutions |
29 | |||
| 30 | 23 | ||||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in North Rhine-Westphalia
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- Multinational companies in North Rhine-Westphalia 996
- Companies with in-house R&D in North Rhine-Westphalia 455
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- Family-owned companies in North Rhine-Westphalia 335
- Retail chains in North Rhine-Westphalia 311
- Hardware manufacturers in North Rhine-Westphalia 284
- Critical infrastructure operators in North Rhine-Westphalia 272
- Transportation, Logistics, Supply Chain and Storage companies in North Rhine-Westphalia 267
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- Software Development companies in North Rhine-Westphalia 217
- SaaS companies in North Rhine-Westphalia 201
- Corporate groups and holding companies in North Rhine-Westphalia 189
- Companies with a mobile app in North Rhine-Westphalia 175
- IT Services and IT Consulting companies in North Rhine-Westphalia 171
- Public sector organisations in North Rhine-Westphalia 160
- Logistics companies in North Rhine-Westphalia 148
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- Financial Services companies in North Rhine-Westphalia 126
- Consulting firms in North Rhine-Westphalia 112
- E-commerce companies in North Rhine-Westphalia 110
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- Distributors and wholesalers in North Rhine-Westphalia 103