# 26 leading professional services firms in New Hampshire

Tamtam tracks 26 professional services firms headquartered in New Hampshire. This list ranks all of them by number of employees on LinkedIn, led by Pace Analytical Services, MAS Medical Staffing and Global Technical Talent, an Inc. 5000 Company. Their median headcount is 264. Half of them were founded in 1996 or later. The most common headquarters are Portsmouth (6) and Manchester (4).

The professional services firms in New Hampshire presented here are mostly mid-sized companies, with headcounts ranging from 119 to over 3,000 employees. The list shows a strong presence of staffing and recruiting agencies, alongside a variety of other service providers. Many of these companies have been established for several decades, indicating a mature business environment.

Key firms include Pace Analytical Services, which offers analytical testing and life sciences services, and MAS Medical Staffing, a staffing agency founded in 2002. Medicus Healthcare Solutions provides staffing solutions for healthcare organizations, while McLane Middleton, founded in 1919, is a legal services firm. PROCON focuses on integrated architecture, engineering, and construction management services, and Synergetics is a global management consulting firm.

🇺🇸 New Hampshire · 26 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Pace Analytical Services](https://www.tamtam.ai/c/pace-analytical-services) (pacelabs.com)<br>Provides analytical testing, laboratory data, and life sciences services to help businesses, industries, and governments make critical decisions for a safer, healthier world. | Environmental Services | 🇺🇸 Minneapolis | 3,184 |  |
| 2 | [MAS Medical Staffing](https://www.tamtam.ai/c/mas-medical-staffing) (masmedicalstaffing.com)<br>A staffing agency with 20+ years experience offering per diem, contract, and travel staff through a unique hybrid approach and proprietary technology platform | Staffing and Recruiting | 🇺🇸 Manchester | 636 | 2002 |
| 3 | [Global Technical Talent, an Inc. 5000 Company](https://www.tamtam.ai/c/global-technical-talent-an-inc-5000-company) (gttit.com)<br>A subsidiary of Chenega Corporation providing Total Talent Solutions, Global staffing, RPO, and Digital talent services to Fortune 500 clients | Staffing and Recruiting | 🇺🇸 Portsmouth | 614 | 1999 |
| 4 | [Medicus Healthcare Solutions](https://www.tamtam.ai/c/medicus-healthcare-solutions) (medicushcs.com)<br>This company offers exceptional staffing solutions and locum tenens services to healthcare organizations and providers across the United States | Staffing and Recruiting | 🇺🇸 Windham | 564 | 2004 |
| 5 | [CoreMedical Group](https://www.tamtam.ai/c/coremedical-group) (coremedicalgroup.com)<br>A leading national healthcare staffing agency specializing in placing nurses, allied healthcare professionals, physicians, and providing full-time permanent and contract/travel staffing services | Staffing and Recruiting | 🇺🇸 Manchester | 553 | 1989 |
| 6 | [Private Health Management](https://www.tamtam.ai/c/private-health-management) (privatehealth.com)<br>A team of clinical experts provides unparalleled access to top doctors and treatments, navigating the healthcare system for optimal outcomes | Hospitals and Health Care | 🇺🇸 Portsmouth | 484 | 2007 |
| 7 | [RafterOne \| An IPG Company](https://www.tamtam.ai/c/rafterone-an-ipg-company) (rafter.one)<br>An expert Salesforce partner specializing in multi-cloud solutions for retail, manufacturing, and technology, offering fast implementation accelerators and digital advisory services | IT Services and IT Consulting | 🇺🇸 Portsmouth | 455 |  |
| 8 | [Goodwin Recruiting](https://www.tamtam.ai/c/goodwin-recruiting) (goodwinrecruiting.com)<br>A full-service recruiting agency focused on personalized services, integrity, diversity, and building strong partnerships with clients and candidates across various industries | Staffing and Recruiting | 🇺🇸 Exeter | 433 | 1999 |
| 9 | [Tax Preparer](https://www.tamtam.ai/c/tax-preparer) (getyourtaxscore.com)<br>Financial services company specializing in tax preparation, located in Newbury, New Hampshire, providing professional assistance with tax planning and compliance | Financial Services | 🇺🇸 Newbury | 391 |  |
| 10 | [McLane Middleton](https://www.tamtam.ai/c/mclane-middleton) (mclane.com)<br>A leading law firm founded in New Hampshire in 1919, now the largest in the state, with expertise in various areas of law for clients in New England and beyond | Legal Services | 🇺🇸 Manchester | 388 | 1919 |
| 11 | [PROCON](https://www.tamtam.ai/c/procon-hooksett) (proconinc.com)<br>An award-winning firm offering fully-integrated architecture, engineering, and construction management services with a focus on delivering exceptional projects | Design Services | 🇺🇸 Hooksett | 358 | 1935 |
| 12 | [York IE](https://www.tamtam.ai/c/york-ie) (york.ie)<br>Advisory and venture capital firm specializing in helping technology companies grow by providing strategic guidance and investing in early-stage B2B SaaS startups | Venture Capital and Private Equity Principals | 🇺🇸 Manchester | 290 | 2019 |
| 13 | [Farm, A Flex Company](https://www.tamtam.ai/c/farm-a-flex-company) (farmpd.com)<br>A healthcare and life science innovation company offering strategic, technological, and product development services to benefit patients and healthcare providers worldwide | Medical Equipment Manufacturing | 🇺🇸 Hollis | 264 | 1971 |
| 14 | [BA Sciences](https://www.tamtam.ai/c/ba-sciences) (basciences.com)<br>Provider of high-quality analytical testing services to life science companies worldwide, committed to excellence, compliance, and innovation Headquarters in Salem, NH | Pharmaceutical Manufacturing | 🇺🇸 Salem | 257 | 1987 |
| 15 | [Synergetics - A Worldwide Resource For Business Problem Solving](https://www.tamtam.ai/c/synergetics-a-worldwide-resource-for-business-problem-solving) (synergeticsww.com)<br>A respected global management consulting firm partnering with companies to drive growth, enhance performance, and create sustainable improvements in efficiencies and profitability | Business Consulting and Services | 🇺🇸 Portsmouth | 119 | 1975 |
| 16 | [Waldron Engineering & Construction, Inc.](https://www.tamtam.ai/c/waldron-engineering-and-construction-inc) (waldron.com)<br>A full-service firm specializing in analytics, engineering, and construction management for the energy industry, delivering sustainable and cost-effective energy solutions | Utilities | 🇺🇸 Exeter | 58 | 1992 |
| 17 | [Compass Retirement Consulting Group](https://www.tamtam.ai/c/compass-retirement-consulting-group) (compass-cg.com)<br>A Third Party Administrator offering retirement plan design, actuarial services, fiduciary services, ongoing consulting, and a focus on partnership, transparency, and exceptional service | Financial Services | 🇺🇸 Stratham | 42 | 2006 |
| 18 | [HTM Companies](https://www.tamtam.ai/c/htm-companies) (htm.com)<br>An organization specializing in advising businesses on operating in the modern era through services like vulnerability analysis and emergency management strategy | Security and Investigations | 🇺🇸 Portsmouth | 26 | 1986 |
| 19 | [Siltek Corporation](https://www.tamtam.ai/c/siltek-corporation) (siltekcorp.com)<br>Global IT consulting firm offering customized solutions for Public and Private sectors, specializing in system integration, software development, and IT implementation with a talented team | IT Services and IT Consulting | 🇺🇸 Londonderry | 17 | 1996 |
| 20 | [Yeoman Technology Group - Swell Media](https://www.tamtam.ai/c/yeoman-technology-group-swell-media) (yeomantechnologies.com)<br>We are experts in optimizing digital strategies for manufacturers, publishers, and educators, focusing on sales, technology impact, and digital product enhancement/creation | Advertising Services | 🇺🇸 Portsmouth | 16 | 2008 |
| 21 | [Cohen & Winters](https://www.tamtam.ai/c/cohen-and-winters) (cohenwinters.com)<br>Dedicated New Hampshire law firm providing legal assistance in personal injury, family law, criminal defense, estate planning with experienced attorneys | Law Practice | 🇺🇸 Concord | 13 | 2009 |
| 22 | [ECCoE](https://www.tamtam.ai/c/eccoe) (eccoe.com)<br>A high-tech consulting firm specializing in engineering solutions for defense and commercial sectors, offering expertise from top experts in various fields | Engineering Services | 🇺🇸 Hollis | 12 | 2009 |
| 23 | [Martin, Lord & Osman, P.A.](https://www.tamtam.ai/c/martin-lord-and-osman-p-a) (martinlordosman.com)<br>A law practice company located in Laconia, New Hampshire, providing legal services from The Busiel Mill | Law Practice | 🇺🇸 Laconia | 12 | 1901 |
| 24 | [Germaine & Blaszka, P.A., Attorneys at Law](https://www.tamtam.ai/c/germaine-and-blaszka-p-a-attorneys-at-law) (germainelaw.com)<br>A premier law firm with experienced attorneys dedicated to helping individuals and businesses resolve legal issues promptly and affordably, surpassing client expectations | Law Practice | 🇺🇸 Derry | 11 |  |
| 25 | [Brantjes Advocaten](https://www.tamtam.ai/c/brantjes-advocaten) (brantjesadvocaten.nl)<br>Ambitious and business-oriented law firm specializing in employment, corporate, and sports law, providing high-quality and personalized legal services through experienced lawyers | Law Practice | 🇺🇸 Amsterdam | 8 |  |
| 26 | [The MEG Companies](https://www.tamtam.ai/c/the-meg-companies) (themegcompanies.com)<br>A multifaceted asset management firm specializing in real estate management, commercial brokerage, development administration, and consulting, with a talented team of professionals | Real Estate | 🇺🇸 Londonderry | 8 | 1988 |

## 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 14, 2026.

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## The same list elsewhere in United States

- [Professional services firms in the United States](https://www.tamtam.ai/l/professional-services-firms-united-states) (7,080)
- [Professional services firms in New York State](https://www.tamtam.ai/l/professional-services-firms-new-york-state) (955)
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- [Professional services firms in New Jersey](https://www.tamtam.ai/l/professional-services-firms-new-jersey) (249)
- [Professional services firms in Georgia](https://www.tamtam.ai/l/professional-services-firms-georgia) (246)
- [Professional services firms in Pennsylvania](https://www.tamtam.ai/l/professional-services-firms-pennsylvania) (245)
- [Professional services firms in Ohio](https://www.tamtam.ai/l/professional-services-firms-ohio) (195)
- [Professional services firms in Maryland](https://www.tamtam.ai/l/professional-services-firms-maryland) (176)
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## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,736)

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Source: https://www.tamtam.ai/l/professional-services-firms-new-hampshire