| # | Company | Employees |
|---|---|---|
| 1 |
Boston Consulting Group (BCG)bcg.com
A global management consulting firm that partners with organizations to tackle challenges, drive growth, and create positive societal impact through innovative solutions |
40,412 |
| 2 |
Publicis Sapientpublicissapient.com
A digital business transformation partner, specializing in strategy, product, experience, engineering, data, and delivering impactful solutions to global organizations |
24,251 |
| 3 |
Bain & Companybain.com
Global consultancy aiding ambitious change makers define the future, achieving extraordinary results, outperforming competition, redefining industries, and tackling urgent societal challenges. |
23,729 |
| 4 |
Virtusavirtusa.com
Digital engineering and technology services provider for Forbes Global 2000 companies worldwide, focusing on innovative solutions and impactful results through an "Engineering First" approach |
18,045 |
| 5 |
L.E.K. Consultinglek.com
Global management consulting firm providing deep industry expertise and rigorous analysis to help business leaders improve performance and create greater shareholder returns. |
4,271 |
| 6 |
Quantiphiquantiphi.com
An AI-first digital engineering company that solves complex business problems with industry experience, cloud, data engineering, and cutting-edge AI research |
4,105 |
| 7 |
Sapientlinkedin.com
Global digital business transformation partner formed from a merger of legendary brands in 2019, previously known by a different name Join our LinkedIn community! |
3,549 |
| 8 | 3,272 | |
| 9 |
Beacon Hillbhsg.com
Provides direct hire, executive search, contract consulting, and temporary staffing solutions across multiple industries including legal, technology, financial, and life sciences sectors. |
3,125 |
| 10 | 2,812 | |
| 11 |
Public Consulting Grouppublicconsultinggroup.com
Consulting firm specializing in public sector solutions, improving health, education, and human services agencies to enhance community outcomes. |
2,714 |
| 12 |
Thrivethrivenextgen.com
Empowering small and mid-market organizations to transform their technology into a strategic advantage, offering AI, cybersecurity, cloud, and MSP/MSSP solutions for innovation and growth. |
2,059 |
| 13 | 2,033 | |
| 14 |
Analysis Groupanalysisgroup.com
Provides economics, finance, healthcare analytics, and strategy expertise to law firms, Fortune 500 companies, and government agencies globally. |
1,848 |
| 15 |
Trinity Life Sciencestrinitylifesciences.com
Trusted strategic partner offering evidence-based solutions for life sciences Specializing in benchmarking solutions, data-driven insights, and exceptional service for over 25 years |
1,701 |
| 16 |
Forresterforrester.com
Provides research, consulting, and events to help leaders use customer-focused insights and data to drive growth and navigate change. |
1,653 |
| 17 | 1,625 | |
| 18 |
Motion Recruitmentmotionrecruitment.com
An IT talent solutions provider offering recruiting, consulting, and community events to tech enthusiasts across North America |
1,550 |
| 19 |
Apps Associatesappsassociates.com
Enterprise application services leader specializing in digital transformation initiatives, providing strategic counsel, system integration, and services to solve complex business challenges |
1,399 |
| 20 |
Odysseyodysseyconsult.com
An established provider of management, analytical, and technical support services for government and private sectors, offering innovative solutions to complex challenges |
1,377 |
| 21 |
Haley & Aldrichhaleyaldrich.com
A multidisciplinary team of experts committed to delivering value in capital, operations, and environmental projects through creative collaboration and efficient solutions |
1,224 |
| 22 |
Triumvirate Environmentaltriumvirate.com
Sustainable environmental solutions for Life Sciences, Healthcare, Education, and Industrial sectors, specializing in waste management, EHS consulting, decontamination, and facility services |
1,096 |
| 23 | 1,045 | |
| 24 |
Eliassen Groupeliassen.com
A strategic consulting company providing business, clinical, and IT services to drive exceptional outcomes, positively impacting employees, clients, and communities |
1,042 |
| 25 |
Weston & Sampsonwestonandsampson.com
A multidisciplinary firm offering design, engineering, and environmental services with a focus on employee empowerment, diversity, learning culture, and impactful projects |
980 |
| 26 |
Simpson Gumpertz & Heger (SGH)sgh.com
National engineering firm providing holistic advice, advanced analysis, code consulting, and research for complex structural and building enclosure challenges |
968 |
| 27 |
GZA GeoEnvironmental, Inc.gza.com
A full-service consulting firm established in 1964, offering diversified technical services in geotechnical, environmental engineering, water, ecology, and construction management |
939 |
| 28 |
OnProcess Technologyaccenture.com
Connects and harmonizes data across service supply chain to digitize processes, improve customer satisfaction, sustainability, and cost savings. |
919 |
| 29 | 875 | |
| 30 |
Peloton Consulting Grouppelotongroup.com
Specializing in digital transformation, this company offers expertise in EPM, ERP, HCM, SCM, Big Data & Analytics, and cloud-based data applications for organizational change |
830 |
| 31 |
Galaxy Weblinks Incgalaxyweblinks.com
A global technology consulting firm providing end-to-end services in product engineering, UX design, mobile/web development, cloud security, QA, ERP, and marketing for enterprises worldwide |
826 |
| 32 | 796 | |
| 33 |
SapientNitrolinkedin.com
Global digital business transformation partner created in 2019 through a merger of legendary brands, now known as Publicis Sapient Join our community! |
788 |
| 34 |
T脺V Rheinland North Americatuv.com
A global leader in testing, inspection, and certification services with a focus on safety, quality, and regulatory compliance for various industries worldwide |
774 |
| 35 |
BSC Groupbscgroup.com
Multidisciplinary consulting firm providing civil engineering, environmental services, surveying, transportation planning, landscape architecture, structural engineering, and custom software solutions |
737 |
| 36 |
Altman Solonaltmansolon.com
Strategic advisory services for telecommunications, media, and technology sectors focusing on digital innovation, go-to-market approaches, global mergers and acquisitions, and investor due diligence. |
692 |
| 37 |
ClearView Healthcare Partnersclearviewhcp.com
A global strategy consulting firm specializing in the life science sector, providing practical recommendations for complex challenges to pharmaceutical, biotech, and medical companies worldwide |
690 |
| 38 |
Dennis Groupdennisgroup.com
A leading food and beverage design-build firm with a focus on quality work, client satisfaction, safety, innovation, and building strong relationships |
688 |
| 39 |
Tighe & Bondtighebond.com
Tighe & Bond is a regional engineering and environmental consulting firm committed to creative, collaborative solutions that benefit clients and communities |
658 |
| 40 |
Sapient Global Marketslinkedin.com
Former financial services consultancy now operating as a digital business transformation partner through a global merger with other legendary industry brands. |
634 |
| 41 |
The Brattle Groupbrattle.com
Provides expert economic, finance, and regulatory analysis and advice to corporations, law firms, and governments worldwide with clarity and credibility. |
595 |
| 42 |
Alira Healthalirahealth.com
Global healthcare firm providing consulting, clinical services, technology, and real-world evidence to support pharma, biotech, and medtech clients. |
574 |
| 43 |
Vanderweil Engineersvanderweil.com
Engineering firm specializing in mechanical, electrical, plumbing, and sustainable design solutions for a wide range of projects, prioritizing client service and environmental impact |
553 |
| 44 |
Sentinel Groupsentinelgroup.com
Employee benefits provider streamlining the process for businesses and employees, making it easy for both parties to navigate and understand |
362 |
| 45 |
demandDrivedemanddrive.com
An integrated sales and marketing agency offering full-service solutions to optimize processes, increase revenue growth, and develop holistic strategies |
234 |
| 46 |
Citisoftcitisoft.com
Specializing in operations and technology change for asset management firms, Citisoft delivers impactful solutions for complex business problems throughout the investment process |
119 |
| 47 |
Sloan Globalsloanglobal.net
A leader in cost-effective engineering solutions for construction, infrastructure, and industrial sectors, emphasizing honesty, integrity, safety, and quality services |
102 |
| 48 |
Outcomeoutcome.com
A research company founded in 1998, specializing in outcomes studies, patient registries, post-approval research, and quality improvement initiatives across 30 therapeutic areas globally |
66 |
| 49 |
Olmstead Associatesolmst.com
Specialized global consultant in investment management, focusing on improving agility, scalability, and risk management through data-centric strategies and expert execution services |
40 |
| 50 |
Conjoin Groupconjoingroup.com
This company partners with Venture Capital and Private Equity firms, investing $250M to enhance portfolio company operations and drive revenue growth |
39 |
| 51 |
Sage Product Development, Inc.sagepd.com
A team of experienced medical device engineers providing efficient and creative product development services to a wide range of companies |
38 |
| 52 |
timeframetimeframe.website
A global consultancy firm specializing in technology and business advisory services, helping professional services firms enhance efficiency and sustain a competitive edge |
37 |
| 53 |
WorldITCenter Incworlditcenter.com
World IT Center optimizes organization performance by providing IT solutions, strategic staffing services, and business process outsourcing to drive efficiency and value |
34 |
| 54 |
Cenotech Solutions LLCcenotechsolutions.com
A technology consulting firm specializing in transforming business processes for financial services organizations through strategic consulting, integrated solutions, and intelligent automation |
22 |
| 55 |
TillieStar Compliance Solutions, Inctilliestar.com
Fintech consulting firm specializing in asset management, offering expert support for investment compliance, software implementations, and business-as-usual support since 2013 |
19 |
| 56 |
Matrix Usa Incmatrixusa.com
An electrical/electronic manufacturing company located in Newton, MA, specializing in producing a range of electrical and electronic products |
16 |
| 57 |
Raina Solutionsacelium.com
This company specializes in providing customized software, IT, and technology-enabled marketing solutions to meet business needs and drive growth for clients worldwide |
13 |
| 58 |
Multiscale Systemsmultiscalesystems.com
Innovative industrial solutions utilizing high-performance materials and advanced manufacturing techniques |
5 |
| 59 |
RPB Energy Economicsrpbenergyeconomics.com
Energy consulting firm specializing in economic and regulatory issues for utilities, law firms, investors, regulators and policy-makers globally Expertise in providing sustainable solutions |
2 |
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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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