# 30 leading companies with in-house R&D in Cologne

Tamtam tracks 35 companies with in-house R&D headquartered in Cologne. This list ranks the 30 largest by number of employees on LinkedIn, led by TÜV Rheinland Group, LANXESS and Uniklinik Köln. Their median headcount is 559. Half of them were founded in 1964 or later.

These Cologne companies with in-house R&D span several industries, predominantly manufacturing, chemicals, and software. They include both large, established groups and younger firms. For instance, TÜV Rheinland Group offers testing and certification services, LANXESS specializes in specialty chemicals, and Uniklinik Köln is a university hospital. DeepL provides AI-powered translation, while RIMOWA creates luxury travel essentials.

A notable pattern among these companies is their diverse founding dates, ranging from the mid-19th century with KHD Humboldt Wedag (1856) and Leybold (1850), to more recent establishments like LANXESS (2004) and DeepL (2017). This indicates a mix of long-standing industrial expertise and newer technological developments.

🇩🇪 Cologne · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [TÜV Rheinland Group](https://www.tamtam.ai/c/tuv-rheinland-group) (tuv.com)<br>Testing, certifying, and training for products, processes, and management systems to ensure safety, quality, and efficiency worldwide. | Public Safety | 🇩🇪 Cologne | 18,408 |  |
| 2 | [LANXESS](https://www.tamtam.ai/c/lanxess) (lanxess.com)<br>A leading specialty chemicals company with global operations, focusing on the development, manufacturing, and marketing of chemical intermediates, additives, and consumer protection products | Chemical Manufacturing | 🇩🇪 Cologne | 14,000 | 2004 |
| 3 | [Uniklinik Köln](https://www.tamtam.ai/c/uniklinik-koln) (uk-koeln.de)<br>Provides maximum medical care, conducts innovative research, and offers extensive medical education. Largest employer in Cologne, top university hospital. | Hospitals and Health Care | 🇩🇪 Cologne | 3,629 | 1908 |
| 4 | [Cologne University of Applied Sciences](https://www.tamtam.ai/c/cologne-university-of-applied-sciences) (th-koeln.de)<br>A diverse university focusing on technology, arts, and sciences, offering a wide range of degree programs and conducting research on societal challenges | Higher Education | 🇩🇪 Cologne | 2,223 | 1971 |
| 5 | [REWE digital](https://www.tamtam.ai/c/rewe-digital) (rewe-digital.com)<br>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! | Software Development | 🇩🇪 Cologne | 1,846 | 2014 |
| 6 | [RIMOWA](https://www.tamtam.ai/c/rimowa) (rimowa.com)<br>A global lifestyle brand under LVMH, creating high-quality travel essentials with a focus on longevity, luxury, heritage, innovation, and craftsmanship | Retail Luxury Goods and Jewelry | 🇩🇪 Cologne | 1,708 | 1898 |
| 7 | [DeepL](https://www.tamtam.ai/c/deepl) (deepl.com)<br>Global platform providing AI-powered human-like translations and writing suggestions, enhancing communication, security, and productivity for businesses and individuals. | Software Development | 🇩🇪 Cologne | 1,468 | 2017 |
| 8 | [DEUTZ](https://www.tamtam.ai/c/deutz) (deutz.com)<br>A pioneering company since 1864, developing environmentally-friendly and efficient drive technologies with customer-specific solutions for reliable power and economical costs | Machinery Manufacturing | 🇩🇪 Cologne | 1,172 | 1864 |
| 9 | [KHD Humboldt Wedag](https://www.tamtam.ai/c/khd-humboldt-wedag) (khd.com)<br>Global authority in cement manufacturing, offering innovative equipment and solutions to increase productivity, efficiency, reduce costs, and improve environmental performance worldwide | Industrial Machinery Manufacturing | 🇩🇪 Cologne | 1,082 | 1856 |
| 10 | [igus SE & Co. KG](https://www.tamtam.ai/c/igus-se-and-co-kg) (igus.eu)<br>manufacturer of energy chain systems and polymer plain bearings, specializing in motion plastics for moving applications worldwide | Plastics Manufacturing | 🇩🇪 Cologne | 1,065 | 1964 |
| 11 | [Leybold](https://www.tamtam.ai/c/leybold) (leybold.com)<br>Providing advanced vacuum pumps, systems, and customized solutions for manufacturing, research, coating, thin films, and analytical processes. | Machinery Manufacturing | 🇩🇪 Cologne | 921 | 1850 |
| 12 | [TENTE](https://www.tamtam.ai/c/tente) (tente.com)<br>A global manufacturer of casters and wheels, specializing in various segments including healthcare, lifestyle, industry, and heavy duty, known for quality and innovation | International Trade and Development | 🇩🇪 Cologne | 824 | 1923 |
| 13 | [Deutsche Sporthochschule Köln](https://www.tamtam.ai/c/deutsche-sporthochschule-koln) (dshs-koeln.de)<br>Germany's only sport university offers quality education, international research, state-of-the-art programs, and renowned anti-doping support in various disciplines | Higher Education | 🇩🇪 Cologne | 809 | 1947 |
| 14 | [Kaufland e-commerce](https://www.tamtam.ai/c/kaufland-e-commerce) (kaufland-ecommerce.com)<br>Operates international online marketplaces, connecting sellers with customers for a safe, easy, and personalized digital shopping experience, supported by platform technology and various services. | Online and Mail Order Retail | 🇩🇪 Cologne | 674 | 2015 |
| 15 | [Interzero](https://www.tamtam.ai/c/interzero) (interzero.de)<br>Development of tailored circular economy solutions, innovative plastic recycling technologies, and comprehensive packaging licensing and optimization services for businesses. | Environmental Services | 🇩🇪 Cologne | 559 |  |
| 16 | [SoSafe](https://www.tamtam.ai/c/sosafe) (sosafe-awareness.com)<br>Empowers organizations to build security culture, mitigate risk through GDPR-compliant awareness programs. Behavioral science, smart algorithms, engaging personalized learning, smart attack simulations. | IT Services and IT Consulting | 🇩🇪 Cologne | 507 |  |
| 17 | [TOYOTA RACING](https://www.tamtam.ai/c/toyota-racing) (toyota-racing.com)<br>A high-performance testing and development facility in Germany offering simulation solutions, engineering services, and championship-winning customer motorsport vehicles worldwide | Motor Vehicle Manufacturing | 🇩🇪 Cologne | 483 | 1979 |
| 18 | [Böttcher Deutschland](https://www.tamtam.ai/c/bottcher-deutschland) (boettcher.de)<br>A global leader in elastomer materials production, printing chemicals, and roller manufacturing, with a strong emphasis on sustainability and problem-solving across industries | Industrial Machinery Manufacturing | 🇩🇪 Cologne | 441 | 1725 |
| 19 | [POLIFILM](https://www.tamtam.ai/c/polifilm) (polifilm.com)<br>Manufacturing extrusion and protective films globally for diverse industries like automotive, food, and construction, focusing on innovation and efficiency to develop and supply film solutions. | Plastics Manufacturing | 🇩🇪 Cologne | 392 | 1972 |
| 20 | [REWE Systems](https://www.tamtam.ai/c/rewe-systems) (rewe-systems.com)<br>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 | IT Services and IT Consulting | 🇩🇪 Cologne | 387 |  |
| 21 | [Pfeifer & Langen GmbH & Co. KG](https://www.tamtam.ai/c/pfeifer-and-langen-gmbh-and-co-kg) (pfeifer-langen.com)<br>A leading European sugar company with over 2,500 employees, focusing on innovation, tradition, and quality since 1870 Emphasizing diversity, growth, and career fulfillment | Food and Beverage Manufacturing | 🇩🇪 Cologne | 377 | 1870 |
| 22 | [STEINERT](https://www.tamtam.ai/c/steinert) (steinertglobal.com)<br>Global leader in providing innovative solutions for material separation in resource recovery and mining sectors, along with manufacturing anodized aluminum coils for electrotechnical applications | Machinery Manufacturing | 🇩🇪 Cologne | 354 | 1889 |
| 23 | [Bertrandt Ingenieurbüro GmbH](https://www.tamtam.ai/c/bertrandt-ingenieurburo-gmbh)<br>Architecture and planning company based in Cologne, Germany, specializing in innovative engineering solutions | Architecture and Planning | 🇩🇪 Cologne | 319 |  |
| 24 | [BUCHEN](https://www.tamtam.ai/c/buchen) (buchen.net)<br>A leading industrial service provider in Europe with a focus on automated cleaning processes, tank services, remediation, and specialized industrial services | Environmental Services | 🇩🇪 Cologne | 311 |  |
| 25 | [pfm medical gmbh](https://www.tamtam.ai/c/pfm-medical-gmbh) (pfmmedical.com)<br>Develops, produces, and sells specialized quality products and reliable services for healthcare, focusing on infusion, surgery, histotechnology, and cardio-vascular technologies to improve patient care. | Manufacturing | 🇩🇪 Cologne | 311 | 1971 |
| 26 | [Klosterfrau Group](https://www.tamtam.ai/c/klosterfrau-group) (klosterfrau.com)<br>Development, manufacturing, and sales of pharmaceutical products focusing on natural healing, with a broad portfolio and international presence. | Pharmaceutical Manufacturing | 🇩🇪 Cologne | 255 | 1826 |
| 27 | [Cellex Cell Professionals GmbH](https://www.tamtam.ai/c/cellex-cell-professionals) (cellex.me)<br>Offers apheresis, cell manufacturing, and global transport for cellular therapies, supporting clinical and research institutions with stem cells, lymphocytes, and genetic modifications. | Research Services | 🇩🇪 Cologne | 86 | 2001 |
| 28 | [ZOLL CMS GmbH](https://www.tamtam.ai/c/zoll-cms-gmbh) (lifevest.zoll.com)<br>A global leader in medical products and software solutions, specializing in Cardiac Management Develops life-saving products like portable defibrillator vests for heart patients | Medical Equipment Manufacturing | 🇩🇪 Cologne | 229 |  |
| 29 | [infodas](https://www.tamtam.ai/c/infodas) (infodas.com)<br>Founded in 1974, specializes in cyber and information security, offering consulting, high-security products, and IT security services to various sectors in Germany | IT Services and IT Consulting | 🇩🇪 Cologne | 214 | 1974 |
| 30 | [Open-Xchange](https://www.tamtam.ai/c/open-xchange) (open-xchange.com)<br>A global leader in mail, messaging, and DNS-based security services through open-source software for a safe, open, and free internet | Software Development | 🇩🇪 Cologne | 198 | 2005 |

## 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 11, 2026.

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Source: https://www.tamtam.ai/l/r-and-d-companies-cologne