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Professional services firms headquartered in Minnesota

Tamtam tracks 125 professional services firms headquartered in Minnesota. This list ranks the 50 largest by number of employees on LinkedIn, led by HGA, Piper Sandler and Currently Seeking Opportunities. Their median headcount is 617. Half of them were founded in 1977 or later. The most common headquarters are Minneapolis (26), Eden Prairie (5) and Saint Paul (4).

馃嚭馃嚫 Minnesota50 companiesUpdated Nov 11, 2026

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).

#CompanyIndustryHeadquarters EmployeesFounded
1
HGAhga.com

National design firm specializing in architecture and engineering, creating impactful and award-winning designs for healthcare, arts, education, government, science, technology, and energy sectors

Architecture and Planning 馃嚭馃嚫 Minneapolis 2,141 1953
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

Financial Services 馃嚭馃嚫 Minneapolis 2,127 1895
3
Currently Seeking Opportunitiessoladayolson.com

Specializing in diverse talent acquisition, job search guidance, and facilitating relationships between businesses for mutual growth and opportunities

Graphic Design 馃嚭馃嚫 Minneapolis 2,080 n/a
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

Staffing and Recruiting 馃嚭馃嚫 Minneapolis 1,858 1966
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

Real Estate 馃嚭馃嚫 Minneapolis 1,841 1938
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

Software Development 馃嚭馃嚫 St. Louis Park 1,706 1995
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

Civil Engineering 馃嚭馃嚫 Minneapolis 1,354 1995
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

Architecture and Planning 馃嚭馃嚫 Mankato 1,278 1973
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

Environmental Services 馃嚭馃嚫 Brooklyn Park 1,235 1984
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

IT Services and IT Consulting 馃嚭馃嚫 St. Cloud 1,223 1973
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

Legal Services 馃嚭馃嚫 Eden Prairie 1,206 n/a
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

Professional Services 馃嚭馃嚫 Minneapolis 1,149 1966
13
SEHsehinc.com

An engineering, architecture, planning, and science firm connecting clients to solutions for success in mobility, infrastructure, clean water, and more

Civil Engineering 馃嚭馃嚫 Saint Paul 1,099 1927
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

Civil Engineering 馃嚭馃嚫 Mankato 1,074 1949
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

IT Services and IT Consulting 馃嚭馃嚫 Golden Valley 1,062 1995
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

Civil Engineering 馃嚭馃嚫 Minneapolis 1,041 1957
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

Design Services 馃嚭馃嚫 Minneapolis 1,013 1977
18
phDataphdata.io

Specializing in Snowflake and modern data technologies, we provide end-to-end services for data products, platforms, machine learning, and data analytics support

IT Services and IT Consulting 馃嚭馃嚫 Minneapolis 876 2014
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

Financial Services 馃嚭馃嚫 Saint Paul 875 n/a
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

Law Practice 馃嚭馃嚫 Minneapolis 867 1948
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

IT Services and IT Consulting 馃嚭馃嚫 Minneapolis 746 2003
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

Translation and Localization 馃嚭馃嚫 Minneapolis 684 2016
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

Engineering Services 馃嚭馃嚫 Eden Prairie 661 1981
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

Architecture and Planning 馃嚭馃嚫 Minneapolis 633 1978
25
Antea Group USAanteagroup.es

An international firm specializing in engineering & environmental consulting, offering solutions in EHS, sustainability, and more to clients worldwide

Environmental Services 馃嚭馃嚫 Saint Paul 617 n/a

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26
Strom Engineeringstromengineering.com

This company provides contingency planning and temporary replacement workforce services for organizations facing potential labor disruptions, such as union strikes

Staffing and Recruiting 馃嚭馃嚫 Minnetonka 602 1961
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

Staffing and Recruiting 馃嚭馃嚫 St. Louis Park 592 2003
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

Advertising Services 馃嚭馃嚫 Minneapolis 587 2009
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

Law Practice 馃嚭馃嚫 Minneapolis 575 1985
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.

Computer and Network Security 馃嚭馃嚫 Minneapolis 574 2001
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

Financial Services 馃嚭馃嚫 Minneapolis 559 1895
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

Staffing and Recruiting 馃嚭馃嚫 Plymouth 531 1968
33
Abdoabdosolutions.com

Full-service accounting and consulting firm providing customized strategies and innovative solutions to help organizations and businesses achieve success.

Accounting 馃嚭馃嚫 Edina 527 1963
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

Legal Services 馃嚭馃嚫 Minneapolis 525 1938
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

IT Services and IT Consulting 馃嚭馃嚫 St. Louis Park 519 2003
36
MentorMatementormate.com

Providing strategic insights, design, and engineering services since 2001 to deliver digital transformation and secure solutions for global companies

IT Services and IT Consulting 馃嚭馃嚫 Minneapolis 499 2001
37
SitelogIQsitelogiq.com

Energy efficiency and facility solutions provider improving buildings for residential, educational, healthcare, commercial, and retail spaces to enhance comfort and productivity

Engineering Services 馃嚭馃嚫 Minneapolis 490 n/a
38
Opusopus-group.com

Integrated team with expertise in real estate development, construction, design, and project management, delivering solutions for various commercial projects

Real Estate 馃嚭馃嚫 Minneapolis 487 2010
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

Civil Engineering 馃嚭馃嚫 Minneapolis 473 1961
40
TKDAtkda.com

A 100% employee-owned firm offering engineering, architecture, planning, and specialized expertise to solve client challenges in industrial, transportation, building, and water markets

Civil Engineering 馃嚭馃嚫 Bloomington 466 1910
41
Logic, Part of Accenturelogicinfo.com

Consulting for leading retailers focusing on strategy, technology, customer loyalty, revenue growth, and competitive advantage through proven methodologies.

IT Services and IT Consulting 馃嚭馃嚫 Bloomington 463 1997
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

Engineering Services 馃嚭馃嚫 Eden Prairie 462 1961
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

Insurance 馃嚭馃嚫 Minneapolis 449 n/a
44
SRMsrmallc.net

This company helps banks and manufacturers manage credit risk by establishing credit policies and training staff to recognize portfolio risks accurately

Financial Services 馃嚭馃嚫 Minneapolis 448 1989
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

Mental Health Care 馃嚭馃嚫 Bloomington 447 1988
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

Staffing and Recruiting 馃嚭馃嚫 Minneapolis 440 n/a
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

Accounting 馃嚭馃嚫 Eden Prairie 437 1934
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

Engineering Services 馃嚭馃嚫 Eden Prairie 433 1979
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

IT Services and IT Consulting 馃嚭馃嚫 Roseville 421 2005
50
AETteamaet.com

Employee-owned consulting engineering company providing geotechnical, environmental, and materials engineering services nationwide, with expertise in building forensics and nondestructive testing

Civil Engineering 馃嚭馃嚫 Saint Paul 401 1971

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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.

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