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The 30 largest companies with in-house R&D in Dublin

Tamtam tracks 43 companies with in-house R&D headquartered in Dublin. This list ranks the 30 largest by number of employees on LinkedIn, led by Eaton, Smurfit Westrock and Smurfit Kappa. Their median headcount is 1,697. Half of them were founded in 1993 or later.

馃嚠馃嚜 Dublin30 companiesUpdated Nov 11, 2026

The companies with in-house R&D in Dublin are mostly large firms, with a notable presence in manufacturing, particularly pharmaceuticals and packaging, and in healthcare. For example, Eaton specializes in intelligent power management, Smurfit Westrock provides paper-based packaging solutions, ICON plc accelerates drug and device development, and Allergan discovers and delivers innovative medicines in various therapeutic areas.

A significant pattern among these companies is their global reach, with many operating across multiple countries. Another observation is the strong representation of companies in the pharmaceutical and biotechnology sectors, such as Jazz Pharmaceuticals, which focuses on innovative medicines for serious diseases, and Mallinckrodt Pharmaceuticals, specializing in specialty pharmaceuticals.

#CompanyIndustryHeadquarters EmployeesFounded
1
Eatoneaton.com

Intelligent power management provider working towards a sustainable future by helping customers manage power, transition to renewable energy, and solve power management challenges globally

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚜 Dublin 51,011 n/a
2
Smurfit Westrocksmurfitwestrock.com

Global provider of innovative paper-based packaging solutions with extensive operations, mills, and a large workforce across multiple countries.

Packaging and Containers Manufacturing 馃嚠馃嚜 Dublin 50,141 n/a
3
Smurfit Kappasmurfitwestrock.com

A global provider of sustainable paper-based packaging solutions, offering innovative products and expertise to drive success for customers worldwide

Packaging and Containers Manufacturing 馃嚠馃嚜 Dublin 48,000 n/a
4
ICON plciconplc.com

A global company founded in Ireland in 1990, specializing in accelerating the development of drugs and devices to save lives and improve quality of life

Biotechnology Research 馃嚠馃嚜 Dublin 35,001 n/a
5
Weatherfordweatherford.com

A global energy services company with 17,000 team members in 75 countries, providing solutions for the challenges of the energy industry

Oil and Gas 馃嚠馃嚜 Dublin 29,301 1987
6
Allerganabbvie.com

The company discovers and delivers innovative medicines in various therapeutic areas including immunology, oncology, neuroscience, eye care, and more

Pharmaceutical Manufacturing 馃嚠馃嚜 Dublin 9,833 n/a
7
Allegionallegion.com

Global leader in seamless access solutions for homes, businesses, schools, and institutions, specializing in securing people and assets around the door

Appliances, Electrical, and Electronics Manufacturing 馃嚠馃嚜 Dublin 7,123 n/a
8
Perrigo Company plcperrigo.com

European Consumer Self-Care market top player, U.S. store brand over-the-counter and infant formula provider, offering trusted health and wellness solutions.

Manufacturing 馃嚠馃嚜 Dublin 5,088 n/a
9
Jazz Pharmaceuticalsjazzpharma.com

Global biopharmaceutical company focused on developing innovative medicines for serious diseases with limited treatment options to improve patient lives.

Pharmaceutical Manufacturing 馃嚠馃嚜 Dublin 3,643 2003
10
Mallinckrodt Pharmaceuticalsmnk.com

Specializing in specialty pharmaceuticals, we develop, manufacture, and distribute innovative treatments for underserved patient populations across various medical fields

Pharmaceutical Manufacturing 馃嚠馃嚜 Dublin 3,400 1867
11
St James's Hospital Dublinlinkin.bio

An academic teaching hospital delivering health treatment, care, and diagnosis while prioritizing education, research, and collaboration with a focus on quality and accountability

Hospitals and Health Care 馃嚠馃嚜 Dublin 2,788 n/a
12
Horizonamgen.com

Merged into Amgen and currently maintains an inactive social media presence without monitoring or active updates following the completed corporate acquisition.

Biotechnology Research 馃嚠馃嚜 Dublin 2,720 2008
13
Alkermesalkermes.com

A neuroscience-focused company developing innovative medicines for psychiatric and neurological disorders, with a strong focus on patient well-being and community support

Biotechnology Research 馃嚠馃嚜 Dublin 2,397 1987
14
St. Vincent's University Hospitalstvincents.ie

A leading academic teaching hospital providing acute, chronic, and emergency care across 50 medical specialties with international accreditation and pioneering patient care approaches

Hospitals and Health Care 馃嚠馃嚜 Dublin 2,000 1834
15
MSD Irelandmsd-ireland.com

A leading biopharmaceutical company dedicated to inventing life-saving medicines and vaccines for challenging diseases, with a focus on research and improving health worldwide

Pharmaceutical Manufacturing 馃嚠馃嚜 Dublin 1,697 n/a

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16
Kepak Groupkepak.com

Irish-based meat processor with multiple facilities, producing fresh and value-added meat products for international foodservice and retail markets.

Food and Beverage Manufacturing 馃嚠馃嚜 Dublin 1,409 1981
17
FINEOSfineos.com

Leading provider of core systems for life, accident, and health insurers globally, offering end-to-end SaaS products for quote to claim administration, digital engagement, and analytics

Software Development 馃嚠馃嚜 Dublin 838 1993
18
Devexpertsdevexperts.com

Devexperts specializes in developing complex software solutions for the Capital Markets industry, including trading platforms, market data products, and consulting services

Software Development 馃嚠馃嚜 Dublin 786 2002
19
Fenergofenergo.com

Develops SaaS financial technology solutions for client lifecycle management, regulatory compliance, risk monitoring, operational efficiency, and digital transformation in financial institutions.

Financial Services 馃嚠馃嚜 Dublin 695 n/a
20
APCapprocess.com

This company helps biopharma companies accelerate drug development with breakthrough science, lightning-fast process development, and radical collaboration to deliver for patients faster

Pharmaceutical Manufacturing 馃嚠馃嚜 Dublin 648 2011
21
Vital Healthcaredccvital.com

A healthcare company specializing in sales, marketing, and distribution of pharmaceuticals, medical, surgical, and lab products with a focus on improving patient care

Hospitals and Health Care 馃嚠馃嚜 Dublin 571 1829
22
Irish Blood Transfusion Servicegiveblood.ie

This organization supplies blood and blood products to hospitals in Ireland, while also encouraging individuals to become blood donors Visit their website for more information

Non-profit Organizations 馃嚠馃嚜 Dublin 444 1965
23
Lanas Healthcare Technology Ltdlanas.com

A healthcare technology company with over 25 products and services empowering 15 million professionals worldwide to provide exceptional patient care

Software Development 馃嚠馃嚜 Dublin 408 2014
24
St. Patrick's Mental Health Servicesstpatricks.ie

Innovative mental health provider with deep roots in history, dedicated to offering quality care, promoting awareness, and safeguarding the rights of those with mental illness

Hospitals and Health Care 馃嚠馃嚜 Dublin 377 1745
25
Openetlinkedin.com

A leading software and services provider to communications companies, specializing in digital and 5G business support systems for transformation and growth

IT Services and IT Consulting 馃嚠馃嚜 Dublin 339 1999
26
Felix Pharmaceuticals Pvt. Ltd.felixvet.com

A company specializing in pharmaceutical generics for veterinary medicine, with an HPRA approved facility in India and corporate offices in Ireland and India

Pharmaceutical Manufacturing 馃嚠馃嚜 Dublin 312 2014
27
Trulifetrulife.com

An internationally-managed group creating and marketing niche medical devices in areas such as Pressurecare, Orthopaedics, Prosthetics, Breastcare, Seating Solutions, and Walking Aids

Medical Equipment Manufacturing 馃嚠馃嚜 Dublin 289 1958
28
CR2cr2.com

A global leader in digital banking and payments, offering a comprehensive platform and partner ecosystem for financial service providers worldwide

Banking 馃嚠馃嚜 Dublin 249 1997
29
Ecocem Globalecocemglobal.com

Development and manufacturing of innovative cement technology reducing carbon emissions by 50%, enabling sustainable construction and industry decarbonization.

Construction 馃嚠馃嚜 Dublin 196 n/a
30
CameraMaticscameramatics.com

Provides comprehensive solutions including 360-degree cameras and AI for collision avoidance, ensuring vehicle and team protection. Also offers a hardware-free employee mobility solution for travel expense and emissions tracking.

Technology, Information and Internet 馃嚠馃嚜 Dublin 139 2016

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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 11, 2026.

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