These are some of the largest professional services firms in Minnesota, covering a range of sectors from architecture and engineering to financial services and IT consulting. The list includes established companies like Piper Sandler, an investment bank founded in 1895, and Ryan Companies US, Inc., a commercial real estate leader since 1938. Many of these firms, such as HGA and WSB, offer multidisciplinary expertise. A notable pattern is the concentration of headquarters in Minneapolis, indicating its role as a key hub for professional services in the state. Other significant locations include Mankato, St. Cloud, and St. Louis Park. The firms vary in age, with several founded in the mid-20th century, like IEA (1984), and some more recent, such as Coherent Solutions (1995).
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 2,141 | ||||
| 2 |
Piper Sandlerpipersandler.com
A leading investment bank offering a full suite of products and services to clients globally, specializing in various sectors and geographies |
2,127 | |||
| 3 |
Currently Seeking Opportunitiessoladayolson.com
Specializing in diverse talent acquisition, job search guidance, and facilitating relationships between businesses for mutual growth and opportunities |
2,080 | |||
| 4 |
AICinnovasolutions.com
A leading talent services firm providing skilled IT, Engineering, and Finance professionals to clients nationwide with a commitment to excellence and innovation |
1,858 | |||
| 5 |
Ryan Companies US, Inc.ryancompanies.com
A national leader in commercial real estate services, focused on bringing value to people, communities, and projects through collaboration and core values |
1,841 | |||
| 6 |
Coherent Solutionscoherentsolutions.com
A digital product engineering company with 25+ years of experience, 1000+ projects completed, and 95% client retention, empowering business success globally |
1,706 | |||
| 7 |
WSBwsbeng.com
A design and consulting firm offering engineering, planning, environmental, and construction services with over 1,100 staff nationwide, connecting dreams to reality |
1,354 | |||
| 8 |
ISGisginc.com
A multi-disciplinary firm with over 50 years of experience, owned by employees, serving various markets with collaboration, creativity, and diverse knowledge |
1,278 | |||
| 9 |
IEAieasafety.com
A small business specializing in environmental safety consulting for private and public organizations, focusing on indoor environments with a team of over 50 professionals |
1,235 | |||
| 10 |
Marco Technologiesmarconet.com
A technology services company offering hosted/cloud services, managed IT services, business solutions, carrier services, copiers/printers, phone systems, document management, and audio/video systems |
1,223 | |||
| 11 |
KLDiscoverykldiscovery.com
Global leader providing eDiscovery, information governance, data recovery solutions for legal, corporate, government clients worldwide with data collection, processing, and document review services |
1,206 | |||
| 12 |
Barr Engineering Co.barr.com
Engineering and environmental consulting firm with over 1,000 experts serving diverse industries worldwide, specializing in resource development, management, and restoration EEO employer |
1,149 | |||
| 13 |
SEHsehinc.com
An engineering, architecture, planning, and science firm connecting clients to solutions for success in mobility, infrastructure, clean water, and more |
1,099 | |||
| 14 |
Bolton & Menk, Inc.bolton-menk.com
A leading provider of public infrastructure solutions, offering engineering, planning, and design services to help communities across the Midwest thrive |
1,074 | |||
| 15 |
QSIqsiinfo.com
Specialized IT staffing solutions provider in Minneapolis, offering tailored services and top local talent to help companies thrive in the technology-driven market |
1,062 | |||
| 16 |
Braun Intertec Corporationbraunintertec.com
Employee-owned geotechnical engineering, environmental consulting, and testing firm with over 1,000 employee-owners promoting wellness and a culture of ownership |
1,041 | |||
| 17 |
NELSON Worldwidenelsonworldwide.com
An award-winning firm providing architecture, interior design, graphic design, and brand strategy services to transform the human experience and environments globally |
1,013 | |||
| 18 | 876 | ||||
| 19 |
U.S. Bancorp Advisorsusbank.com
Offering a wide range of financial services including investment advisory, insurance, and merger & acquisition advisory, tailored to help clients achieve their financial goals |
875 | |||
| 20 |
Fredrikson & Byron, P.A.fredlaw.com
A firm specializing in legal services with a focus on business acumen, proactive problem-solving, and strategic partnerships to meet client objectives |
867 | |||
| 21 |
Concordconcordusa.com
Technology consultancy creating seamless customer experiences with strong analytics and data foundations to accelerate business value through technology integration, optimization, and activation |
746 | |||
| 22 |
United Language Grouppropio.com
A global translation and interpretation company with expertise in over 200 languages, serving various industries using cutting-edge technology and linguistic skills |
684 | |||
| 23 |
Wunderlich-Malec Engineering, Inc.wmeng.com
An established engineering company specializing in solutions for industrial process plants, offering expertise, experience, and resources for critical control systems |
661 | |||
| 24 |
RSP Architectsrsparch.com
This company is a team of designers and architects who provide a wide range of services to clients in various industries globally |
633 | |||
| 25 |
Antea Group USAanteagroup.es
An international firm specializing in engineering & environmental consulting, offering solutions in EHS, sustainability, and more to clients worldwide |
617 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
Strom Engineeringstromengineering.com
This company provides contingency planning and temporary replacement workforce services for organizations facing potential labor disruptions, such as union strikes |
602 | |||
| 27 |
Horizontal Talenthorizontaltalent.com
A staffing company that matches talent with businesses, offering services in direct hire, staff augmentation, and project teams for IT, marketing, and business roles |
592 | |||
| 28 |
Ovative Groupovative.com
A digital-first media and measurement firm transforming marketing success with Paid and Owned Media Services, Omni-Channel Measurement, and Strategy Consulting |
587 | |||
| 29 |
Bowman and Brookebowmanandbrooke.com
National trial firm specializing in product liability defense for Global 500 companies, with over 150 attorneys and offices across the US |
575 | |||
| 30 |
NetSPInetspi.com
Pioneered penetration testing as a service, combining security professionals with AI and automation to deliver clarity, speed, and scale across various pentest types. |
574 | |||
| 31 |
Piper Jaffraypipersandler.com
A leading investment bank and institutional securities firm offering a full suite of products, deep expertise in core sectors, and global reach |
559 | |||
| 32 |
Masterson Staffing Solutionsmastersonstaffing.com
A premier staffing solutions provider with nearly 40 branches across the Midwest connecting talented workers with great companies for mutual success and growth |
531 | |||
| 33 |
Abdoabdosolutions.com
Full-service accounting and consulting firm providing customized strategies and innovative solutions to help organizations and businesses achieve success. |
527 | |||
| 34 |
Robins Kaplan LLProbinskaplan.com
A premier trial law firm with over 250 attorneys in eight cities, specializing in litigating, mediating, and arbitrating disputes for clients to achieve business results |
525 | |||
| 35 |
Horizontal Digitalhorizontaldigital.com
Experience forward consultancy leveraging customer data to drive personalized digital engagements Diversity-focused, with US and global presence Founded in 2003 |
519 | |||
| 36 |
MentorMatementormate.com
Providing strategic insights, design, and engineering services since 2001 to deliver digital transformation and secure solutions for global companies |
499 | |||
| 37 |
SitelogIQsitelogiq.com
Energy efficiency and facility solutions provider improving buildings for residential, educational, healthcare, commercial, and retail spaces to enhance comfort and productivity |
490 | |||
| 38 |
Opusopus-group.com
Integrated team with expertise in real estate development, construction, design, and project management, delivering solutions for various commercial projects |
487 | |||
| 39 |
SRF Consulting Groupsrfconsulting.com
A full-service consulting firm offering award-winning services in transportation planning, engineering, landscape architecture, project controls, and more across the Midwest |
473 | |||
| 40 | 466 | ||||
| 41 |
Logic, Part of Accenturelogicinfo.com
Consulting for leading retailers focusing on strategy, technology, customer loyalty, revenue growth, and competitive advantage through proven methodologies. |
463 | |||
| 42 |
RFA Engineeringrfamec.com
Engineering services company serving Fortune 500 to start-ups, providing mechanical, software, and electrical design for various industries with a focus on client satisfaction |
462 | |||
| 43 |
Marsh McLennan Agency - Upper Midwestmarshmma.com
A leading brokerage agency offering business insurance, employee benefits, retirement planning, and private client insurance solutions across the US and Canada |
449 | |||
| 44 |
SRMsrmallc.net
This company helps banks and manufacturers manage credit risk by establishing credit policies and training staff to recognize portfolio risks accurately |
448 | |||
| 45 |
R3 Continuumr3c.com
Leader in tailored behavioral health solutions for workplace well-being, culture, and performance, empowering individuals and organizations to thrive and grow |
447 | |||
| 46 |
Salo, a Korn Ferry companykornferry.com
A company specializing in staff consulting and talent acquisition services, having joined forces with Korn Ferry to enhance its offerings |
440 | |||
| 47 |
Boulayboulaygroup.com
A company offering strategic accounting, tax, business planning, and wealth management services to help clients achieve financial success and reach their goals |
437 | |||
| 48 |
EVS, Inc.evs-eng.com
Established in 1979, an engineering firm specializing in renewable energy Providing services for utility-scale solar plants, substations, and energy storage facilities nationwide |
433 | |||
| 49 |
Nihilent Technologies Incnihilent.com
Stay updated on all things #Nihilent by following our consolidated LinkedIn company page for information on our services and offerings |
421 | |||
| 50 |
AETteamaet.com
Employee-owned consulting engineering company providing geotechnical, environmental, and materials engineering services nationwide, with expertise in building forensics and nondestructive testing |
401 | |||
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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.
More company lists in Minnesota
- The largest companies in Minnesota 1,912
- Manufacturers in Minnesota 262
- Multinational companies in Minnesota 224
- Retail chains in Minnesota 156
- Education providers in Minnesota 149
- Companies with in-house R&D in Minnesota 146
- Hardware manufacturers in Minnesota 139
- Financial services firms in Minnesota 130
- Healthcare providers in Minnesota 120
- Hospitals and Health Care companies in Minnesota 118
- Critical infrastructure operators in Minnesota 115
- Contract manufacturers in Minnesota 100
- IT Services and IT Consulting companies in Minnesota 88
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- Public sector organisations in Minnesota 84
- Construction companies in Minnesota 82
- Family-owned companies in Minnesota 81
- Financial Services companies in Minnesota 78
- Higher Education companies in Minnesota 73
- Distributors and wholesalers in Minnesota 73
- IT services companies in Minnesota 73
- Consulting firms in Minnesota 68
- SaaS companies in Minnesota 61
- Medical Equipment Manufacturing companies in Minnesota 58
The same list elsewhere in United States
- Professional services firms in the United States 7,078
- Professional services firms in New York State 955
- Professional services firms in California 880
- Professional services firms in Texas 629
- Professional services firms in Florida 375
- Professional services firms in Virginia 344
- Professional services firms in Illinois 339
- Professional services firms in Massachusetts 249
- Professional services firms in New Jersey 249
- Professional services firms in Georgia 246
- Professional services firms in Pennsylvania 245
- Professional services firms in Ohio 195
- Professional services firms in Maryland 176
- Professional services firms in Michigan 172
- Professional services firms in Washington State 163
- Professional services firms in North Carolina 142
- Professional services firms in Alabama 135
- Professional services firms in New York 735
- Professional services firms in Chicago 196
- Professional services firms in Houston 156
- Professional services firms in Atlanta 143
- Professional services firms in San Francisco 130
- Professional services firms in Washington 109
- Professional services firms in Los Angeles 108