# Top 50 companies with in-house R&D in New Jersey

Tamtam tracks 224 companies with in-house R&D headquartered in New Jersey. This list ranks the 50 largest by number of employees on LinkedIn, led by Cognizant, ADP and BD. Their median headcount is 5,653. The most common headquarters are Princeton (6), Bridgewater (3) and Somerset (3).

This selection of New Jersey companies with in-house R&D highlights a strong presence in pharmaceuticals, healthcare, and IT services. Large corporations like Cognizant, an IT services and consulting firm, and ADP, specializing in human resources, are prominent. The list also features major pharmaceutical manufacturers such as Merck and Bristol Myers Squibb, both developing innovative medicines and vaccines.

A notable pattern is the concentration of pharmaceutical manufacturing and healthcare companies. BD focuses on medical technology, while Quest Diagnostics provides extensive clinical laboratory testing. Johnson & Johnson MedTech develops surgical and orthopaedic devices. This indicates a robust ecosystem for medical innovation and health-related research within the state.

🇺🇸 New Jersey · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Cognizant](https://www.tamtam.ai/c/cognizant) (cognizant.com)<br>This company helps clients modernize technology, reimagine processes, and transform experiences to stay ahead in a rapidly changing world, improving everyday life | IT Services and IT Consulting | 🇺🇸 Teaneck | 372,148 |  |
| 2 | [ADP](https://www.tamtam.ai/c/adp) (adp.com)<br>Innovative company focusing on improving workplace experiences through advanced products and services in HR, talent, time management, benefits, and payroll | Human Resources Services | 🇺🇸 Roseland | 187,000 |  |
| 3 | [BD](https://www.tamtam.ai/c/bd) (bd.com)<br>A global medical technology company focused on improving medical discovery, diagnostics, and care delivery through innovative solutions and collaboration with healthcare providers worldwide | Medical Equipment Manufacturing | 🇺🇸 Franklin Lakes | 44,812 |  |
| 4 | [Merck](https://www.tamtam.ai/c/merck) (merck.com)<br>A global biopharmaceutical company focused on using leading-edge science to develop innovative medicines and vaccines for both people and animals | Pharmaceutical Manufacturing | 🇺🇸 Rahway | 44,477 |  |
| 5 | [MSD](https://www.tamtam.ai/c/msd) (msd.com)<br>A leading global biopharmaceutical company focusing on research to develop innovative medicines and vaccines to improve and save lives worldwide | Pharmaceutical Manufacturing | 🇺🇸 Rahway | 39,546 |  |
| 6 | [Bristol Myers Squibb](https://www.tamtam.ai/c/bristol-myers-squibb) (bms.com)<br>This company works to transform patients' lives through science by developing innovative therapies and promoting health equity for those affected by serious diseases | Pharmaceutical Manufacturing | 🇺🇸 Lawrence Township | 39,000 |  |
| 7 | [Johnson & Johnson MedTech](https://www.tamtam.ai/c/johnson-and-johnson-medtech) (jnjmedtech.com)<br>Development and delivery of innovative surgical, orthopaedic, and interventional medical devices focused on improving patient outcomes and healthcare value. | Hospitals and Health Care | 🇺🇸 New Brunswick | 37,703 |  |
| 8 | [Quest Diagnostics](https://www.tamtam.ai/c/quest-diagnostics) (questdiagnostics.com)<br>Provides extensive clinical laboratory testing services, innovative diagnostics, pathology, and consultation to improve health outcomes and support healthcare providers. | Medical and Diagnostic Laboratories | 🇺🇸 Secaucus | 32,423 | 1967 |
| 9 | [RWJBarnabas Health](https://www.tamtam.ai/c/rwjbarnabas-health) (rwjbh.org)<br>Leading academic healthcare system in NJ with 12 hospitals, 3 children's hospitals, behavioral health center, trauma centers, outpatient facilities, and partnership with Rutgers University for research and education | Hospitals and Health Care | 🇺🇸 West Orange | 25,618 | 2016 |
| 10 | [Hackensack Meridian Health](https://www.tamtam.ai/c/hackensack-meridian-health) (hackensackmeridianhealth.org)<br>A company dedicated to continuous improvement and progress | Hospitals and Health Care | 🇺🇸 Edison | 24,559 | 2016 |
| 11 | [Kenvue](https://www.tamtam.ai/c/kenvue) (kenvue.com)<br>A leading consumer health company with iconic brands offering products trusted by healthcare professionals to improve daily lives and well-being | Personal Care Product Manufacturing | 🇺🇸 Summit | 19,721 | 2023 |
| 12 | [Rutgers University](https://www.tamtam.ai/c/rutgers-university) (rutgers.edu)<br>Leading institution for higher education in New Jersey, offering a wide range of undergraduate, graduate, and professional degree programs across various departments and schools | Higher Education | 🇺🇸 New Brunswick | 18,394 | 1766 |
| 13 | [NiCE](https://www.tamtam.ai/c/nice-hoboken) (nice.com)<br>It provides cloud and on-premises software solutions for advanced analytics, enhancing customer service, compliance, fraud prevention, and citizen safety. | Software Development | 🇺🇸 Hoboken | 14,211 |  |
| 14 | [Zoetis](https://www.tamtam.ai/c/zoetis) (zoetis.com)<br>A global leader in animal health, focused on advancing care for animals through medicines, vaccines, diagnostics, and technologies in over 100 countries | Pharmaceutical Manufacturing | 🇺🇸 Parsippany | 13,514 | 2013 |
| 15 | [Panasonic North America](https://www.tamtam.ai/c/panasonic-north-america) (bit.ly)<br>Leading technology partner providing integrated solutions across various industries like automotive, energy, retail, and more to create breakthrough technologies for a better life and world | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Newark | 11,525 | 1918 |
| 16 | [Atlantic Health](https://www.tamtam.ai/c/atlantic-health) (atlantichealth.org)<br>Nonprofit healthcare system serving New Jersey and nearby areas with hospitals, outpatient centers, rehabilitation, and specialized pediatric and mobile health services. | Hospitals and Health Care | 🇺🇸 Morristown | 10,330 |  |
| 17 | [Samsung Electronics America](https://www.tamtam.ai/c/samsung-electronics-america) (samsung.com)<br>A global conglomerate dedicated to diverse businesses including technology, manufacturing, construction, petrochemicals, finance, and hospitality, leading in electronics production and digital media | Computers and Electronics Manufacturing | 🇺🇸 Englewood Cliffs | 10,127 |  |
| 18 | [Bausch + Lomb](https://www.tamtam.ai/c/bausch-lomb) (bausch.com)<br>Provides comprehensive eye health products including contact lenses, lens care, pharmaceuticals, and surgical devices to people worldwide. | Pharmaceutical Manufacturing | 🇺🇸 Bridgewater | 9,344 |  |
| 19 | [Organon](https://www.tamtam.ai/c/organon) (organon.com)<br>Global healthcare company offering therapies in women’s health, biosimilars, and established medicines to improve everyday health, advising caution against recruitment fraud | Pharmaceutical Manufacturing | 🇺🇸 Jersey City | 9,000 |  |
| 20 | [ETS](https://www.tamtam.ai/c/ets) (ets.org)<br>Development and delivery of trusted educational assessments and research to promote skill proficiency and lifelong learning opportunities worldwide. | Education Administration Programs | 🇺🇸 Princeton | 8,246 |  |
| 21 | [BMW Group US](https://www.tamtam.ai/c/bmw-group-us) (bmwusa.com)<br>Luxury auto manufacturer in the USA offering BMW, MINI, and Rolls-Royce vehicles, as well as electric and hybrid models, with extensive sales and service network | Motor Vehicle Manufacturing | 🇺🇸 Woodcliff Lake | 8,010 |  |
| 22 | [Amneal Pharmaceuticals](https://www.tamtam.ai/c/amneal-pharmaceuticals) (amneal.com)<br>Pharmaceutical company providing affordable essential medicines through generics, branded products, injectables, biosimilars, and international market expansion. | Pharmaceutical Manufacturing | 🇺🇸 Bridgewater | 7,359 | 2002 |
| 23 | [Covance](https://www.tamtam.ai/c/covance)<br>Global leader in drug development services, partnering with pharmaceutical and biotech companies to bring top prescription drugs to market and provide innovative solutions | Research Services | 🇺🇸 Princeton | 6,294 |  |
| 24 | [Verisk](https://www.tamtam.ai/c/verisk) (verisk.com)<br>Provides expert data-driven analytic insights and advanced technologies to help the global insurance industry manage risk and improve resilience. | Information Services | 🇺🇸 Jersey City | 5,798 | 1971 |
| 25 | [Church & Dwight Co., Inc.](https://www.tamtam.ai/c/church-and-dwight-co-inc) (churchdwight.com)<br>Manufacture and market quality household and personal care products globally, including well-known brands across various consumer categories. | Manufacturing | 🇺🇸 Ewing | 5,653 | 1846 |
| 26 | [MISTRAS Group](https://www.tamtam.ai/c/mistras-group) (mistrasgroup.com)<br>Global provider of technology-enabled solutions for asset protection, structural integrity evaluation, risk management, and compliance in energy and industrial sectors. | Public Safety | 🇺🇸 Princeton Junction | 5,400 | 1978 |
| 27 | [Lupin Pharmaceuticals](https://www.tamtam.ai/c/lupin-pharmaceuticals) (lupin.com)<br>Manufactures branded, generic, and biotechnology pharmaceutical products globally, specializing in respiratory, cardiovascular, anti-diabetic, and women's health therapy areas. | Pharmaceutical Manufacturing | 🇺🇸 Somerset | 5,346 | 2003 |
| 28 | [Ethicon, Inc.](https://www.tamtam.ai/c/ethicon-inc) (ethicon.com)<br>Advancing surgical care with technologies and solutions including sutures, staplers, energy devices, robotics, and digital tools for improved patient lives. | Medical Equipment Manufacturing | 🇺🇸 Raritan | 4,936 |  |
| 29 | [Daiichi Sankyo US](https://www.tamtam.ai/c/daiichi-sankyo-us) (daiichisankyo.us)<br>Development of innovative medicines using advanced science and technology to address cancer, cardiovascular, and other serious diseases. | Pharmaceutical Manufacturing | 🇺🇸 Basking Ridge | 4,437 |  |
| 30 | [Hackensack University Medical Center](https://www.tamtam.ai/c/hackensack-university-medical-center) (HackensackUMC.org)<br>A nonprofit teaching and research hospital providing comprehensive inpatient and outpatient services in Bergen County, NJ, established in 1888 | Hospitals and Health Care | 🇺🇸 Hackensack | 4,350 | 1888 |
| 31 | [Robert Wood Johnson University Hospital](https://www.tamtam.ai/c/robert-wood-johnson-university-hospital) (rwjbh.org)<br>A leading academic medical center offering state-of-the-art healthcare services, specializing in cardiac care, cancer care, emergency medicine, pediatrics, and maternal-fetal medicine | Hospitals and Health Care | 🇺🇸 New Brunswick | 4,291 | 1884 |
| 32 | [Integra LifeSciences](https://www.tamtam.ai/c/integra-lifesciences) (integralife.com)<br>Development and manufacturing of advanced medical technologies focused on surgical, neurologic, and regenerative treatments to improve patient outcomes. | Medical Equipment Manufacturing | 🇺🇸 Princeton | 3,846 |  |
| 33 | [Construction Specialties](https://www.tamtam.ai/c/construction-specialties) (c-sgroup.com)<br>Design and manufacture of custom architectural building products including wall protection, doors, flooring, louvers, sun controls, and cubicle curtains. | Wholesale Building Materials | 🇺🇸 Lebanon | 3,756 | 1948 |
| 34 | [Otsuka Pharmaceutical Companies (U.S.)](https://www.tamtam.ai/c/otsuka-pharmaceutical-companies-u-s) (otsuka-us.com)<br>Commercialization of discovered and licensed pharmaceutical products in North America and global clinical development and registration of healthcare products. | Pharmaceutical Manufacturing | 🇺🇸 Princeton | 3,728 |  |
| 35 | [Commvault](https://www.tamtam.ai/c/commvault) (commvault.com)<br>The company provides a cyber resilience platform for organizations to uncover, respond to, and recover from cyber attacks with data security and automation | Data Security Software Products | 🇺🇸 Tinton Falls | 3,518 | 1996 |
| 36 | [GAF](https://www.tamtam.ai/c/gaf-parsippany) (gaf.com)<br>Leading roofing and waterproofing manufacturer in North America, delivering innovative solutions, exceptional customer service, and a commitment to community and sustainability | Wholesale Building Materials | 🇺🇸 Parsippany | 3,504 |  |
| 37 | [Stevens Institute of Technology](https://www.tamtam.ai/c/stevens-institute-of-technology) (stevens.edu)<br>Private research university fostering interdisciplinary education and research in technology, business, engineering, and sciences to address global challenges. | Higher Education | 🇺🇸 Hoboken | 3,450 | 1870 |
| 38 | [Neurealm](https://www.tamtam.ai/c/neurealm) (neurealm.com)<br>Partner for engineering, modernization, and technology operations, delivering digital platforms, AI, cybersecurity, and innovation to global enterprises. | IT Services and IT Consulting | 🇺🇸 Princeton | 3,338 | 1998 |
| 39 | [Terumo Medical Corporation](https://www.tamtam.ai/c/terumo-medical-corporation) (terumomedical.com)<br>A leading manufacturer of medical devices and supplies, offering solutions for healthcare providers through innovative products and strategic business partnerships | Medical Equipment Manufacturing | 🇺🇸 Somerset | 2,907 | 1972 |
| 40 | [Ortho Clinical Diagnostics](https://www.tamtam.ai/c/ortho-clinical-diagnostics) (quidelortho.com)<br>Develops and manufactures intelligent diagnostic solutions that transform data into actionable insights, advancing diagnostics for a healthier future. | Medical Equipment Manufacturing | 🇺🇸 Raritan | 2,859 |  |
| 41 | [Cognizant Softvision](https://www.tamtam.ai/c/cognizant-softvision) (cognizant.com)<br>Cognizant Softvision, now part of Cognizant, offers software development services Visit Cognizant's LinkedIn page for more information | IT Services and IT Consulting | 🇺🇸 Teaneck | 2,822 |  |
| 42 | [Vonage](https://www.tamtam.ai/c/vonage) (vonage.com)<br>It offers unified communications, contact centers, and programmable APIs on a flexible cloud platform, helping enterprises enhance their communication strategies. | IT Services and IT Consulting | 🇺🇸 Holmdel | 2,769 | 2001 |
| 43 | [Eisai US](https://www.tamtam.ai/c/eisai-us) (eisai.com)<br>Innovative pharmaceutical company based in the US, focused on oncology and neurology, with a strong commitment to patient care and discovering new therapies | Pharmaceutical Manufacturing | 🇺🇸 Nutley | 2,752 | 1995 |
| 44 | [Benjamin Moore](https://www.tamtam.ai/c/benjamin-moore) (benjaminmoore.com)<br>Leading manufacturer of premium paints and finishes, delivering products through extensive retail network with commitment to innovation and community support. | Manufacturing | 🇺🇸 Montvale | 2,552 | 1883 |
| 45 | [Legend Biotech](https://www.tamtam.ai/c/legend-biotech) (legendbiotech.com)<br>Global biotechnology company developing and manufacturing novel therapies using innovative technologies for patients worldwide, with headquarters in NJ and manufacturing sites in US, China, and Belgium | Biotechnology Research | 🇺🇸 Somerset | 2,527 |  |
| 46 | [Mathematica](https://www.tamtam.ai/c/mathematica) (mathematica.org)<br>Provides evidence-based solutions to improve program efficiency, reduce costs, and enhance measurable impact for better policy outcomes. | Research Services | 🇺🇸 Princeton | 2,465 |  |
| 47 | [Dassault Falcon Jet](https://www.tamtam.ai/c/dassault-falcon-jet) (dassaultfalcon.com)<br>A global leader in designing, manufacturing, and supporting business jets, offering a range of models from large-cabin to ultra-long range | Aviation and Aerospace Component Manufacturing | 🇺🇸 Little Ferry | 2,356 |  |
| 48 | [CR Bard](https://www.tamtam.ai/c/cr-bard) (bd.com)<br>Develops, manufactures, and markets innovative medical technologies for vascular, urology, oncology, and surgical specialties, aiming for clinical benefits and cost reduction. | Medical Equipment Manufacturing | 🇺🇸 Murray Hill | 2,305 |  |
| 49 | [Brother USA](https://www.tamtam.ai/c/brother-usa) (global.brother)<br>Provides award-winning home and office equipment, including printers, sewing machines, P-touch labelers, and industrial solutions, with a legacy spanning over 115 years. | Computers and Electronics Manufacturing | 🇺🇸 Bridgewater | 2,112 | 1954 |
| 50 | [Celgene](https://www.tamtam.ai/c/celgene) (bms.com)<br>Leading biopharma company producing innovative medicines for patients with serious diseases, specializing in cancer treatment and other advanced therapies | Pharmaceutical Manufacturing | 🇺🇸 Summit | 2,094 |  |

## 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-new-jersey