| # | Company | Employees |
|---|---|---|
| 1 |
Thermo Fisher Scientificthermofisher.com
A global leader in science services, providing innovative technologies and pharmaceutical support to make the world healthier, cleaner, and safer |
100,256 |
| 2 | 99,488 | |
| 3 |
The TJX Companies, Inc.jobs.tjx.com
Leading global off-price retailer offering apparel and home fashions through seven brands across nine countries, nearly 4,700 stores, and five e-commerce sites. |
57,100 |
| 4 |
Boston Scientificbostonscientific.com
Develops and provides innovative medical technologies including devices and therapies for various diseases, improving patient health and reducing healthcare costs worldwide. |
54,633 |
| 5 |
State Streetstatestreet.com
Global financial leader providing comprehensive investment services, institutional asset management, multi-asset trading, and digital solutions to enhance portfolio performance and decision making. |
46,913 |
| 6 |
Analog Devicesanalog.com
Global semiconductor company combining analog, digital, and software technologies to advance digitized factories, mobility, healthcare, and climate solutions. |
27,234 |
| 7 |
Iron Mountainironmountain.com
Global leader in storage and information management services, partnering with organizations worldwide to protect and unlock the value of their assets and data |
24,357 |
| 8 |
Amazon Fulfillment Technologies & Roboticsamazon.jobs
The company partners people with intelligent robots to enhance order fulfillment accuracy, create new jobs worldwide, and improve customer experience |
17,911 |
| 9 |
BJ's Wholesale Clubbjs.com
Wholesale club offering members bulk products with a focus on value, service, and a strong company culture for success. |
16,273 |
| 10 |
Keurig Dr Pepper Inc.keurigdrpepper.com
Leading North American beverage company with extensive portfolio including coffee, soft drinks, water, juice, and mixers, strong distribution network. |
13,948 |
| 11 |
Wayfairaboutwayfair.com
Destination for all things home, offering expert customer service, tools for easy shopping, and wide selection to help create personalized spaces |
12,524 |
| 12 |
HubSpothubspot.com
It provides a comprehensive CRM platform with marketing, sales, and service tools, fostering employee growth and a flexible workplace culture. |
12,229 |
| 13 |
Akamai Technologiesakamai.com
A global leader in internet infrastructure, Akamai powers and protects online experiences for billions of users daily through innovative solutions |
10,647 |
| 14 |
Toastpos.toasttab.com
Toast empowers restaurants with cloud-based software and hardware to streamline operations, drive revenue, and enhance guest experience through POS, marketing, and HR solutions |
7,762 |
| 15 |
Biogenbiogen.com
Company pioneers innovative science, delivering new medicines to transform patients' lives, with a global presence and focus on superior treatment outcomes. |
7,724 |
| 16 |
Sensata Technologiessensata.com
Supplier of sensing, electrical protection, control, and power management solutions enhancing safety, efficiency, and comfort across multiple industries worldwide. |
7,634 |
| 17 |
UniFirst Corporationunifirst.com
Supply and service of uniforms, workwear, safety products, and facility services with manufacturing and specialized garment programs. |
7,485 |
| 18 |
Hologic, Inc.hologic.com
Develops innovative medical products, especially for women's health, focusing on early detection and better outcomes across breast, skeletal, diagnostic, and GYN surgical solutions. |
6,921 |
| 19 |
Modernamodernatx.com
Pioneering mRNA technology for new medicines to improve patient lives by providing real-time instructions for protein production in cells |
6,906 |
| 20 |
Entegrisentegris.com
A global leader in advanced science-based solutions for technology challenges, driving innovation with artificial intelligence, augmented reality, and IoT technologies |
6,612 |
| 21 |
Vertex Pharmaceuticalsvrtx.com
Global biotechnology company focusing on creating medicines for serious and life-threatening diseases, with a pioneering history in treating cystic fibrosis |
6,382 |
| 22 |
American Toweramericantower.com
Global provider of digital infrastructure supporting mobile and broadband networks, enabling connectivity, innovation, and bridging digital divides worldwide. |
6,111 |
| 23 |
Dynatracedynatrace.com
This company specializes in providing a platform that unifies observability, business, and security data with AI-driven analytics and automation to optimize cloud operations and ensure flawless digital experiences |
6,090 |
| 24 |
DraftKings Inc.careers.draftkings.com
The company is committed to creating popular games and betting experiences, leading the way in sports entertainment, innovation, and global collaboration |
5,760 |
| 25 |
Pegasystemspega.com
It provides a low-code platform for organizations to enhance agility, automate workflows, and address business challenges using AI technology. |
5,569 |
| 26 |
Harte Hankshartehanks.com
A global customer experience company specializing in personalized marketing, customer care services, and fulfillment solutions to create enduring connections |
4,267 |
| 27 |
Cabot Corporationcabotcorp.com
Global specialty chemical and performance materials company providing solutions to address current challenges and future customer needs worldwide. |
3,719 |
| 28 |
Revvityrevvity.com
Revvity specializes in innovative health science solutions, technologies, and services for healthcare advancements worldwide, covering discovery, development, and diagnosis to cure |
3,569 |
| 29 |
BeOne Medicinesbeonemedicines.com
Developing innovative, affordable cancer treatments for hematology and solid tumors with a global team and collaborative approach. |
3,350 |
| 30 |
Rapid7rapid7.com
Global leader in AI-powered managed cybersecurity operations, advancing organizations' cyber resilience through integrating security data, AI, and threat intelligence to reduce risk and disrupt attackers. |
3,268 |
| 31 |
AlerisLifealerislife.com
AlerisLife provides financially flexible community living options and ancillary services for older adults, aiming to enhance quality of life through innovative solutions |
3,022 |
| 32 |
Watts Water Technologieswatts.com
Provides diverse water solutions for residential, industrial, and municipal applications, including plumbing, water quality, HVAC, and drainage systems. |
2,947 |
| 33 |
Klaviyoklaviyo.com
Unified customer platform empowering brands with ownership of consumer data to automate personalized email/SMS communications, foster customer relationships, and drive growth |
2,902 |
| 34 |
Alnylam Pharmaceuticalsalnylam.com
A global biotech company pioneering RNAi therapeutics to treat rare genetic diseases, with a breakthrough product and a robust pipeline |
2,883 |
| 35 |
Regal Beloit Corporationmaintenance.regalrexnord.com
This company manufactures global airflow, motion control, power transmission, and power generation solutions used in commercial, industrial, and residential settings worldwide. |
2,808 |
| 36 |
NETSCOUTnetscout.com
This company provides a Visibility Without Borders platform to help essential organizations manage complex networks, unlock insights, anticipate problems, and stay unstoppable |
2,708 |
| 37 |
Haemoneticshaemonetics.com
A global healthcare company offering innovative medical products and solutions to improve patient care and reduce healthcare costs in various medical markets |
2,530 |
| 38 |
argenxargenx.com
Global immunology company focused on developing novel antibody-based medicines for severe autoimmune diseases through collaborations with leading researchers |
2,315 |
| 39 |
Symboticsymbotic.com
This company develops innovative robotics and software for advanced automation solutions in the supply chain industry to increase efficiency and profitability |
2,074 |
| 40 |
Rockland Trustrocklandtrust.com
A Massachusetts-based full-service commercial bank offering banking, investment, and insurance services to businesses and individuals through various branches and centers |
2,059 |
| 41 |
BeiGenebeonemedicines.com
Global oncology company developing accessible and affordable cancer treatments through innovative research, collaborations, and commitment to improving medicine access for patients worldwide |
1,967 |
| 42 |
IPG Photonicsipgphotonics.com
Global leader in fiber laser technology, providing reliable and efficient laser solutions across various industries with a strong focus on innovation and customer needs |
1,901 |
| 43 |
Amerescoameresco.com
An independent company specializing in energy efficiency and renewable energy solutions for public & private entities in North America and the UK |
1,475 |
| 44 | 1,471 | |
| 45 |
Cerence AIcerence.com
A global leader in creating AI-powered interactive experiences for connected mobility, partnering with automakers to advance the future of transportation |
1,195 |
| 46 |
Global Partners LPglobalp.com
This company operates a network of terminals, gas stations, and retail stations in the Northeast and throughout the US, providing energy solutions and convenience to customers |
1,185 |
| 47 |
Vicorvicorpower.com
Designs and manufactures modular power components and complete power systems for computing, industrial, telecom, transportation, aerospace, and defense markets. |
998 |
| 48 |
Definitive Healthcaredefinitivehc.com
Provider of healthcare commercial intelligence solutions through data, analytics, and expertise, empowering clients to navigate the healthcare market and drive commercial success |
741 |
| 49 |
Keurig Green Mountain, Inc.keurigdrpepper.com
Leading North American beverage company with extensive portfolio including coffee, soft drinks, tea, water, juice, and mixers, strong distribution network. |
701 |
| 50 |
Sygnity S.A.sygnity.pl
The company supports businesses and the government in digital transformation, providing solutions to optimize processes, enhance management, and make strategic decisions based on data |
664 |
| 51 |
Boston Properties (BXP)linkedin.com
Real estate investment and development across six major U.S. regions, focusing on premier workplace properties and national growth. |
630 |
| 52 |
Veraltoveralto.com
A global leader in essential technology solutions, focused on water quality management, product authentication, and safeguarding vital global resources |
617 |
| 53 |
Quanterixquanterix.com
Innovative company digitizing biomarker analysis to revolutionize healthcare by enabling earlier disease detection and precise treatment methods for various therapeutic areas |
507 |
| 54 | 84 | |
| 55 |
CloudCallcloudcall.com
The company offers a communication system that integrates with CRM to improve productivity, data quality, and capture all conversations for sales and recruitment teams |
69 |
| 56 |
Novartis Sciencenovartis.com
A global team of over 6,000 professionals focusing on innovative drug discovery in various disease areas with key technology competencies |
16 |
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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 Oct 24, 2026.
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