These companies with in-house R&D in Silesia are mostly mid-sized to large enterprises, with a strong representation from manufacturing, particularly in the automotive and industrial machinery sectors, alongside IT services and higher education institutions. Notable companies include NGK Ceramics Polska, specializing in ceramic filters for engines, and ArcelorMittal Poland, a steel producer. WASKO implements IT solutions and industrial automation, while AIUT provides automation, robotics, and telemetry solutions. The Silesian University of Technology and Politechnika Częstochowska are key academic players.
A significant cluster of these companies, such as The Silesian University of Technology, NGK Ceramics Polska, WASKO, AIUT, and BMZ Poland, are headquartered in Gliwice. This indicates a concentration of R&D activities within this specific city, highlighting its role as a hub for technological development in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
The Silesian University of Technologypolsl.pl
A prestigious technological university in Poland, supporting heavy and mining industries, offering research support, and fostering student development |
1,600 | |||
| 2 |
NGK Ceramics Polskangk.com.pl
Global leader in manufacturing technological materials with four production plants specializing in ceramic filters for Diesel and gasoline engines |
1,566 | |||
| 3 | 1,120 | ||||
| 4 |
ArcelorMittal Polandpoland.arcelormittal.com
Leading steel producer in Poland with modern facilities and a focus on sustainability, quality, and leadership Specializing in steel production and coke export |
964 | |||
| 5 | 602 | ||||
| 6 |
Aluprofaluprof.com
A leading manufacturer of aluminum systems in Europe with branches in multiple European countries and the United States, part of Grupa Kapitałowa Grupa Kęty SA |
589 | |||
| 7 |
Boryszew S.A. oddział Maflow w Tychachmaflow.com
Manufacturing rubber hoses for automotive air conditioning systems, supplying major global car and truck manufacturers with high-quality products. |
414 | |||
| 8 |
Politechnika Częstochowskapcz.pl
Provides higher education focused on engineering, technology, and applied sciences, fostering research and innovation in Silesian region. |
404 | |||
| 9 | 370 | ||||
| 10 |
Jastrzębska Spółka Węglowa SAjsw.pl
The company is a leading producer of high-quality coking coal and coke in the EU, supplying steel and power plant industries worldwide |
362 | |||
| 11 |
PROPOINTpropoint.pl
Provider of robotics and industrial automation solutions worldwide, offering programming, implementation, design, and manufacturing services, with a focus on innovation and growth |
360 | |||
| 12 |
BPSCbpsc.com.pl
Market leader in enterprise software specializing in MRPII/ERP, MES, and project management solutions for manufacturing companies, tailored to various industries and company sizes |
359 | |||
| 13 |
Brembo Poland Sp. z o.o.brembo.com
A leading international manufacturer of brake discs, calipers, and complete brake systems for a wide range of vehicles, specializing in cutting-edge technology and reliability |
355 | |||
| 14 |
KLIMAS Wkręt-metwkret-met.com
Manufacturer of high-quality fastening technologies with advanced production plants, R&D, European approvals, exporting products to nearly 70 countries worldwide. |
347 | |||
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. | |||||
| 15 |
BMZ Polandbmz-battery.com
A global leader in lithium-ion power and energy storage systems, with innovative battery solutions for various applications and international conferences on battery technology |
335 | |||
| 16 |
E Net Productionkariera.enp.pl
A Polish company specializing in ecommerce platforms, integrating sales channels, logistics, and payment systems for technology-driven industry leaders |
326 | |||
| 17 |
ZRE KATOWICE S.A.zre.com.pl
Utilizing 65 years of experience, the enterprise has evolved into a large technical facility specializing in energy solutions for domestic and international clients |
255 | |||
| 18 |
Flytronic S.A.wbgroup.pl
A dynamic engineering center within a group, specializing in research and development of UAV-based surveillance and reconnaissance systems on a global scale |
227 | |||
| 19 |
ENERGOPROJEKT-KATOWICE SAepk.com.pl
Leading in the field of engineering services for the energy sector, focusing on high-quality project execution and customer satisfaction, while also considering social interests |
199 | |||
| 20 |
GRUPA ZARMENgrupa-zarmen.pl
A leading group specializing in comprehensive industrial investments with diverse activities in sectors such as energy, chemical, and metallurgical industries |
184 | |||
| 21 |
Nexteer Automotive EMEASAnexteer.com
Global provider of steering, driveline, ADAS, and autonomous technologies for top car manufacturers, focusing on creating solutions for the future of mobility |
178 | |||
| 22 |
STOKSON - Modern Bakerystokson.com.pl
Specializing in producing pastries like donuts, muffins, and cookies, we are a pioneer in the Polish market and a leader in Europe, setting trend with innovative products |
131 | |||
| 23 |
Rekord Systemy Informatycznerekord.com.pl
Provider of IT solutions for business and administrative units, offering systems for decision-making, financial management, e-urzad, business management, and full support services |
110 | |||
| 24 |
KP Labskplabs.space
A NewSpace company in Poland delivering AI computers and software for autonomous space missions, aiming to become a European leader |
78 | |||
| 25 |
DEMARKO S.A.demarko-trailers.com
A leading manufacturer of specialized vehicles for various industries, with a strong reputation for quality, innovation, and environmental responsibility worldwide |
69 | |||
| 26 |
PSO Maskpol S.A.maskpol.com.pl
Leading Polish manufacturer of ballistic protection, chemical protection, and preventive security products, part of a defense group with modern research facilities and production technologies |
46 | |||
| 27 |
Connecto. Informatyka w biznesie.connecto.pl
The company specializes in transforming business processes into technological tools, providing IT solutions for data management and integration with ERP systems |
46 | |||
| 28 |
Saint-Gobain PAM Polskasgpam.pl
A global leader in manufacturing comprehensive water and sewer systems, road infrastructure, and internal drainage solutions with a focus on innovation and environmental sustainability |
21 | |||
| 29 |
SIMPLE H2simpleh2.com
Manufacturer of Polish electrolyzers for green hydrogen production, energy storage systems, and independent stations for production, storage, and refueling of green hydrogen |
1 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Silesia
- The largest companies in Silesia 190
- Multinational companies in Silesia 39
- IT services companies in Silesia 29
- Manufacturers in Silesia 27
The same list elsewhere in Poland
- Companies with in-house R&D in Poland 290
- Companies with in-house R&D in Masovia 84
- Companies with in-house R&D in Lesser Poland 36
- Companies with in-house R&D in Pomerania 25
- Companies with in-house R&D in Warsaw 69