| # | Company | Employees |
|---|---|---|
| 1 |
REWE digitalrewe-digital.com
A tech team of IT and non-IT specialists collaborates to bring innovative ideas to life, enhancing retail and improving lives Welcome to the Home of IT! |
1,846 |
| 2 |
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 |
| 3 |
BCG Platinionbcgplatinion.com
Global interdisciplinary consultancy delivering large-scale technology projects, platform architecture, and cybersecurity solutions to accelerate digital transformations and drive innovation for diverse clients. |
945 |
| 4 | 687 | |
| 5 |
AmaliTechamalitech.com
A social business in Africa offering free IT training to empower youth for employment in the tech sector, promoting diversity and inclusion |
640 |
| 6 |
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 |
| 7 |
Qvest Globalqvest.com
A global technology consultancy specializing in digital transformation, system architecture, ICT integration, and software development for media industry innovation |
457 |
| 8 |
REWE Systemsrewe-systems.com
The company develops efficient IT systems for the retail sector, solves challenges with innovative technologies, and optimizes existing application landscapes for a leading German and European retail and tourism conglomerate |
387 |
| 9 |
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 |
| 10 |
parcIT GmbHparcit.de
Leading provider of software and methodology services for bank management, risk assessment, and rating processes in Germany, specializing in solutions for financial institutions |
343 |
| 11 |
SEVEN PRINCIPLES GROUP7p-group.com
A digital business solutions company based in Cologne, helping clients with digital business models, sustainability, and digital transformation through innovative IT solutions |
253 |
| 12 |
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 |
| 13 |
infodasinfodas.com
Founded in 1974, specializes in cyber and information security, offering consulting, high-security products, and IT security services to various sectors in Germany |
214 |
| 14 | 188 | |
| 15 |
TIMETOACT Software & Consulting GmbHatvantage.com
Trusted advisor providing future-proof solutions for mid-sized businesses, insurance companies, and government agencies, specializing in cloud transformation, digital workplace, BI, and more |
186 |
| 16 | 181 | |
| 17 |
Cologne Intelligencecologne-intelligence.de
CI specializes in helping businesses prepare for the digital future by providing tailored software, mobile applications, reporting solutions, consulting services, and business intelligence solutions |
137 |
| 18 | 107 | |
| 19 |
Heringer Consulting GmbHheringer-consulting.de
An IT consulting firm specialized in sustainable data solutions in Microsoft Azure, with a focus on BI, cloud, and SQL Commitment to climate management and transparency |
77 |
| 20 |
Friendventure Digitalagenturfriendventure.de
A team of 40+ specialists in Cologne and Berlin creating websites for B2B companies, tech startups, and brands with a focus on user-centric content and design |
57 |
| 21 |
Explicatis GmbHexplicatis.com
Specializing in software development and IT consulting, we create customized digital solutions for various industries, using cutting-edge technologies and agile methods |
56 |
| 22 |
bracketlab GmbHbracketlab.de
Ready-to-use AI platform, custom software development, expert consulting, and tailored team training for businesses seeking secure, compliant, and high-speed results. |
34 |
| 23 |
SIDESTREAMsidestream.tech
Tailored software solutions with focus on quality, security, and scalability Specializing in microservices, big data challenges, and long-term value creation for clients globally |
28 |
| 24 |
Webmatch - E-Commerce Agenturwebmatch.de
An E-Commerce agency specializing in creating and optimizing online shopping solutions for retailers and manufacturers to engage customers and build lasting relationships |
27 |
| 25 |
ProSyst - Bosch Groupprosyst.com
A pioneer in OSGi and Java technology, offering products, services, and expertise in various vertical markets for OSGi technology solutions |
26 |
| 26 |
testbee GmbHtestbee.com
A dynamic international company specializing in C-level consulting, restructuring, process optimization, interim management, digitization, agile processes, distributed team infrastructure, and QA solutions |
22 |
| 27 |
mobivention GmbHmobivention.com
A leading digital agency specializing in app and web development, offering conception, design, and development services for lottery companies |
18 |
| 28 |
KERUN.ONE GmbHkerun.one
The company specializes in optimizing and digitalizing Salesforce business processes to leverage digital opportunities and mitigate risks |
16 |
| 29 |
Consultingwerk - Software Architecture and Developmentconsultingwerk.com
Consultingwerk supports OpenEdge developers with consulting services, tools, and expertise in application modernization, architecture, and GUI for NET development |
15 |
| 30 | 10 | |
| 31 |
aye4finaye4fin.com
Passionate experts in payment and financial services, providing support for orchestrating payment solutions for corporates, retailers, and processors |
2 |
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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 2, 2026.
More company lists in Cologne
- The largest companies in Cologne 466
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The same list elsewhere in Germany
- IT services companies in Germany 776
- IT services companies in Bavaria 186
- IT services companies in North Rhine-Westphalia 146
- IT services companies in Baden-W眉rttemberg 123
- IT services companies in Hesse 66
- IT services companies in Lower Saxony 43
- IT services companies in Munich 81
- IT services companies in Berlin 75
- IT services companies in Hamburg 37
- IT services companies in Frankfurt 28