# Companies with in-house R&D headquartered in Helsinki

Tamtam tracks 59 companies with in-house R&D headquartered in Helsinki. This list ranks the 30 largest by number of employees on LinkedIn, led by Wärtsilä, UPM and University of Helsinki. Their median headcount is 1,576. Half of them were founded in 1944 or later.

These Helsinki-based companies with in-house R&D are primarily large organizations, many with a global presence, reflecting a strong industrial and manufacturing base. Wärtsilä, for example, develops technology for sustainable societies, while UPM is a global provider of renewable fibers and materials. The University of Helsinki is a leading multidisciplinary research institution, and HUS Helsingin yliopistollinen sairaala is a major healthcare provider. Stora Enso offers renewable products in packaging and biomaterials.

A notable pattern among these companies is their focus on sustainability and environmental performance across various sectors. This includes Outokumpu, which specializes in sustainable stainless steel production, and Metso Outotec, providing sustainable technologies for aggregates and minerals processing. Kalmar offers sustainable cargo handling solutions, and Kemira provides safe and sustainable chemistries for water-intensive industries.

🇫🇮 Helsinki · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Wärtsilä](https://www.tamtam.ai/c/wartsila) (wartsila.com)<br>This company empowers sustainable societies by providing innovative technology and services for improved environmental and economic performance globally | Industrial Machinery Manufacturing | 🇫🇮 Helsinki | 18,000 | 1834 |
| 2 | [UPM](https://www.tamtam.ai/c/upm) (upm.com)<br>Global provider of renewable fibres, advanced materials, decarbonization solutions, and communication papers with strong sustainability focus. | Manufacturing | 🇫🇮 Helsinki | 18,000 |  |
| 3 | [University of Helsinki](https://www.tamtam.ai/c/university-of-helsinki) (helsinki.fi)<br>Leading multidisciplinary research university fostering international collaboration, education, and innovation for sustainable solutions and global impact. | Higher Education | 🇫🇮 Helsinki | 11,563 | 1640 |
| 4 | [HUS Helsingin yliopistollinen sairaala](https://www.tamtam.ai/c/hus-helsingin-yliopistollinen-sairaala) (hus.fi)<br>A leading healthcare provider in Finland with over 27,000 professionals, specializing in rare and complex diseases, treating 680,000 patients annually | Hospitals and Health Care | 🇫🇮 Helsinki | 6,975 | 2000 |
| 5 | [Stora Enso](https://www.tamtam.ai/c/stora-enso) (storaenso.com)<br>A global provider of renewable products in packaging, biomaterials, construction, and paper, promoting sustainability with low-carbon, fiber-based solutions for eco-friendly businesses | Paper and Forest Product Manufacturing | 🇫🇮 Helsinki | 6,276 | 1998 |
| 6 | [Outokumpu](https://www.tamtam.ai/c/outokumpu) (outokumpu.com)<br>Global leader in sustainable stainless steel production, turning recycled steel into long-lasting material used in various applications while actively working towards reducing carbon footprint | Primary Metal Manufacturing | 🇫🇮 Helsinki | 3,724 | 1932 |
| 7 | [Kalmar](https://www.tamtam.ai/c/kalmar-helsinki) (kalmarglobal.com)<br>Global leader in sustainable cargo handling solutions for ports, terminals, and heavy industry, providing innovative, eco-efficient operations with an extensive electric portfolio | Machinery Manufacturing | 🇫🇮 Helsinki | 3,583 |  |
| 8 | [Metso Outotec](https://www.tamtam.ai/c/metso-outotec) (metso.com)<br>Provides sustainable technologies, solutions, and services for aggregates, minerals processing, and metals refining industries, improving efficiency and reducing environmental risks globally. | Machinery Manufacturing | 🇫🇮 Helsinki | 3,577 |  |
| 9 | [Kemira](https://www.tamtam.ai/c/kemira) (kemira.com)<br>Leading provider of safe and sustainable chemistries for water-intensive industries, striving to create a more sustainable future through collaboration and innovation | Chemical Manufacturing | 🇫🇮 Helsinki | 3,312 | 1920 |
| 10 | [PKC Group](https://www.tamtam.ai/c/pkc-group) (pkcgroup.com)<br>A multinational enterprise within the automotive industry, offering diverse products and services with a global presence and a focus on diversity and inclusion | Motor Vehicle Manufacturing | 🇫🇮 Helsinki | 3,268 |  |
| 11 | [Supercell](https://www.tamtam.ai/c/supercell) (supercell.com)<br>Global game company based in Helsinki, Finland, with offices in various locations Known for popular games like Clash of Clans and Clash Royale Promotes ownership and independence | Computer Games | 🇫🇮 Helsinki | 2,733 |  |
| 12 | [Uponor](https://www.tamtam.ai/c/uponor) (uponor.com)<br>A global provider of water movement solutions for residential, commercial, and municipal customers, offering safe drinking water, energy-efficient heating and cooling systems, and reliable infrastructure solutions | Wholesale Building Materials | 🇫🇮 Helsinki | 1,907 |  |
| 13 | [Patria](https://www.tamtam.ai/c/patria) (patriagroup.com)<br>Provides aerospace and military equipment, armored vehicles, mortar systems, and pilot training while offering lifecycle support, maintenance, and intelligence surveillance for critical operations. | Defense and Space Manufacturing | 🇫🇮 Helsinki | 1,641 | 1921 |
| 14 | [Hiab](https://www.tamtam.ai/c/hiab) (hiabgroup.com)<br>Leading provider of smart, safe, and sustainable load handling solutions including loader cranes, forklifts, forestry cranes, skiploaders, roll-off cable hoists, and tail lifts | Industrial Machinery Manufacturing | 🇫🇮 Helsinki | 1,590 | 1944 |
| 15 | [Valio](https://www.tamtam.ai/c/valio) (valio.com)<br>A global company focused on providing top-quality dairy products, owned by Finnish family farmers, with a commitment to sustainability and innovation | Dairy Product Manufacturing | 🇫🇮 Helsinki | 1,576 | 1905 |
| 16 | [NAPA](https://www.tamtam.ai/c/napa) (napa.fi)<br>An independent software house specializing in high-end solutions for ship design and operation, setting new standards in marine software development | Software Development | 🇫🇮 Helsinki | 1,477 | 1989 |
| 17 | [Granlund](https://www.tamtam.ai/c/granlund) (granlund.fi)<br>A Finnish company in the real estate and construction sectors with over 1400 professionals, offering services in MEP design, property management, energy consulting, and more | Civil Engineering | 🇫🇮 Helsinki | 1,329 | 1960 |
| 18 | [Wärtsilä Marine](https://www.tamtam.ai/c/wartsila-marine) (wartsila.com)<br>A global leader providing engines, propulsion systems, hybrid technology, and powertrain solutions for decarbonizing the maritime industry with performance-based agreements and expertise | Maritime | 🇫🇮 Helsinki | 1,297 | 1834 |
| 19 | [Haaga-Helia University of Applied Sciences](https://www.tamtam.ai/c/haaga-helia-university-of-applied-sciences) (haaga-helia.fi)<br>The company prepares professionals for business and services through education, research, and development in various fields including business, IT, and tourism | Higher Education | 🇫🇮 Helsinki | 1,175 | 2007 |
| 20 | [Wärtsilä Energy](https://www.tamtam.ai/c/wartsila-energy) (wartsila.com)<br>The company specializes in helping customers transition to renewable energy by optimizing energy systems, providing flexible power plants, storage solutions, and lifecycle services | Mechanical Or Industrial Engineering | 🇫🇮 Helsinki | 1,124 | 1834 |
| 21 | [Teknos](https://www.tamtam.ai/c/teknos) (teknos.com)<br>A global coatings company offering a wide range of paints for manufacturing, building, and consumers, with a focus on quality and innovation to protect and prolong | Paint, Coating, and Adhesive Manufacturing | 🇫🇮 Helsinki | 1,002 | 1948 |
| 22 | [UPM Raflatac](https://www.tamtam.ai/c/upm-raflatac) (upmraflatac.com)<br>High-performance self-adhesive products including label materials, graphics solutions, specialty tapes, and customer-focused reliable services worldwide. | Paper and Forest Product Manufacturing | 🇫🇮 Helsinki | 984 | 1975 |
| 23 | [Halton Group](https://www.tamtam.ai/c/halton-group) (halton.com)<br>Development and provision of indoor air quality solutions for commercial, healthcare, kitchen, energy, and marine environments ensuring safety and efficiency. | Industrial Machinery Manufacturing | 🇫🇮 Helsinki | 883 | 1969 |
| 24 | [Wipak](https://www.tamtam.ai/c/wipak) (wipak.com)<br>A family-owned company specializing in high barrier films for food and medical products, offering innovative solutions, cutting-edge technology, and exceptional customer service | Packaging and Containers Manufacturing | 🇫🇮 Helsinki | 760 | 1969 |
| 25 | [Qvantel](https://www.tamtam.ai/c/qvantel) (qvantel.com)<br>Qvantel develops cloud-native Digital BSS for communication service providers, using no/low code technology to enable quick transformation to digital-first companies | Telecommunications | 🇫🇮 Helsinki | 716 | 1995 |
| 26 | [Folkhälsan](https://www.tamtam.ai/c/folkhalsan) (folkhalsan.fi)<br>An organization focused on social and health care, research, welfare services, and education to promote health and quality of life in Finland | Wellness and Fitness Services | 🇫🇮 Helsinki | 675 | 1921 |
| 27 | [Ahlstrom-Munksjö](https://www.tamtam.ai/c/ahlstrom-munksjo) (ahlstrom.com)<br>Completed ownership arrangement of Decor business, resulting in a stand-alone company named Munksjö, separate from the original entity. | Paper and Forest Product Manufacturing | 🇫🇮 Helsinki | 658 |  |
| 28 | [WithSecure](https://www.tamtam.ai/c/withsecure) (withsecure.com)<br>Provides outcome-based cybersecurity solutions, protecting mid-market companies with AI-powered technologies, human expertise, and co-security services, focusing on privacy and compliance. | Computer and Network Security | 🇫🇮 Helsinki | 629 | 1988 |
| 29 | [PAROC](https://www.tamtam.ai/c/paroc) (paroc.com)<br>Manufactures energy-efficient and fire resilient stone wool insulation products for new buildings, renovations, HVAC, and industrial applications across various international markets. | Wholesale Building Materials | 🇫🇮 Helsinki | 620 | 1937 |
| 30 | [Finnish Meteorological Institute - Ilmatieteen laitos](https://www.tamtam.ai/c/finnish-meteorological-institute-ilmatieteen-laitos) (ilmatieteenlaitos.fi)<br>The company observes and researches the atmosphere, near space, and seas to provide services for public safety, business, and citizens | Research Services | 🇫🇮 Helsinki | 614 | 1838 |

## 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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## The same list elsewhere in Finland

- [Companies with in-house R&D in Finland](https://www.tamtam.ai/l/r-and-d-companies-finland) (177)
- [Companies with in-house R&D in Espoo](https://www.tamtam.ai/l/r-and-d-companies-espoo) (38)

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