These are professional services firms in Missouri, mostly large and mid-sized companies with a strong presence in financial services, construction, and legal practices. Edward Jones provides personalized financial advisory services, while Burns & McDonnell specializes in engineering and construction. Wells Fargo Advisors offers investment guidance and wealth management, and Perficient focuses on digital transformation consultancy. Other notable firms include Rose International for staffing and recruiting and CRB for sustainable engineering solutions.
A significant cluster of these companies, particularly in financial services and law, have their headquarters in St. Louis and Kansas City. Many of these firms were established in the late 19th and early 20th centuries, indicating a long-standing history of professional services in the region, with some newer companies like Block Advisors (founded 2015) also present.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Edward Jonesedwardjones.com
Provides personalized financial advisory and investment services through a large network of advisors to help clients achieve financial goals. |
45,845 | |||
| 2 |
Burns & McDonnellburnsmcd.com
Engineering, construction, architecture, planning, and community engagement with a strong ownership mentality and commitment to client success and safety. |
16,200 | |||
| 3 |
Wells Fargo Advisorswellsfargoadvisors.com
Financial advisors providing professional investment guidance and wealth management services across fifty states to help clients achieve long-term success through complex planning. |
14,935 | |||
| 4 |
Perficientperficient.com
Global consultancy specializing in digital transformation for large enterprises, offering strategy, creative, and technology solutions to drive business growth and success |
4,362 | |||
| 5 | 
Giancarlo Spaggiari Ingegnere - Studio Professionalegsistudio.it
The company provides independent evaluation services in various sectors including real estate, infrastructure, urban planning, workplace accidents, energy efficiency, and more |
2,945 | |||
| 6 |
Rose Internationalroseint.com
Provides staffing and total talent solutions across various industries, offering challenging assignments to skilled professionals for corporations and government agencies. |
2,270 | |||
| 7 |
CRBcrbgroup.com
A leading provider of sustainable engineering, architecture, construction, and consulting solutions to global life sciences and food & beverage industries |
2,008 | |||
| 8 |
BW Design Groupbwdesigngroup.com
This company is a fully integrated engineering, architecture, construction, and consulting firm serving leading companies with customized solutions |
1,676 | |||
| 9 |
Shook, Hardy & Bacon L.L.P.shb.com
A leading litigation firm with expertise in product liability, mass tort, intellectual property, environmental law, employment litigation, commercial litigation, and public policy |
1,563 | |||
| 10 |
Block Advisorsblockadvisors.com
Tax professionals at this company help small business owners maximize credits and deductions with year-round tax preparation services and 100% accuracy guaranteed |
1,497 | |||
| 11 |
Spencer Fane LLPspencerfane.com
A law firm offering unconventional legal services to protect and advance business and personal interests, led by decisive and purposeful leaders |
1,139 | |||
| 12 |
BKD CPAs & Advisorsforvismazars.us
Top-tier CPA and advisory firm providing comprehensive services including risk management, technology, wealth management, and forensic and valuation services to clients globally |
1,068 | |||
| 13 |
RubinBrown LLPrubinbrown.com
Offering unmatched service to various sectors, we provide expert accounting and consulting services to help clients build and protect value |
1,057 | |||
| 14 |
Thompson Coburn LLPthompsoncoburn.com
Full-service law firm with offices nationwide, serving Fortune 500 to emerging companies across various industries with industry-specific expertise and exceptional client service |
1,030 | |||
| 15 |
Bryan Cavebryancave.com
Global law firm with 1,600 lawyers in 32 offices offering clients integrated legal advice, specializing in M&A, real estate, financial services, litigation, and corporate risk practices |
984 | |||
| 16 |
Myers and Stauffer LCmyersandstauffer.com
Specializing in accounting, consulting, and data analysis for state and federal agencies managing government health care programs, with expertise in reimbursement issues and program integrity |
923 | |||
| 17 |
Penmac Staffing Services, Inc.penmac.com
A staffing service offering temporary and long-term staffing, human resource services, payroll administration, benefits, screenings, and pre-employment assessments |
893 | |||
| 18 |
TranSystemstransystems.com
Transportation and infrastructure consulting firm enhancing communities with innovative planning, design, and construction solutions from professionals across the US |
819 | |||
| 19 |
Frontline Managed Servicesfrontlinems.com
A global provider offering outsourced solutions in IT, Financial & Administrative Managed Services for legal and accounting markets, driving financial success through innovation |
806 | |||
| 20 |
Introbaintroba.com
Global building engineering firm transforming the built environment with digital solutions, sustainability strategies, and innovative designs to create smart, resilient spaces |
790 | |||
| 21 |
Electric Power Systemsasplundhpower.com
An independent electrical testing & engineering organization specializing in commissioning, start up, and maintenance testing for various facilities globally |
741 | |||
| 22 |
Roeslein & Associatesroeslein.com
A global leader in engineering, procurement, and construction services, specializing in modularized plant facilities for various industries worldwide |
709 | |||
| 23 |
Abstrakt Marketing Groupabstraktmg.com
Provides sales appointment setting, inbound marketing, SEO, creative services, video production, Salesforce consulting, and talent solutions for business growth. |
692 | |||
| 24 |
1898 & Co.1898andco.burnsmcd.com
A business and technology consultancy specializing in critical infrastructure industries, providing strategic insight, efficiency, innovation, and data-driven solutions for clients |
638 | |||
| 25 |
Gemini Consulting & Servicesgemini-us.com
Providing technology solutions including ERP, cloud migration, and analytics to help businesses accelerate digital transformation and improve operations. |
615 | |||
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 |
Armstrong Teasdalearmstrongteasdale.com
A global law firm founded in 1901, providing legal services to clients around the world with a focus on long-term relationships |
612 | |||
| 27 |
The Resource Group, Spend Management Solutionstheresourcegroup.com
Specializing in non-payroll spend management, The Resource Group focuses on sustainable processes, change management, sourcing, analytics, and process improvement to lower healthcare costs |
603 | |||
| 28 |
IMPACT Groupimpactgrouphr.com
Specializing in career transitions, relocation support, and outplacement services, we empower employees with the tools they need to succeed in their careers |
579 | |||
| 29 |
Tepa Companiestepa.com
A shared services organization providing leadership and management to various small businesses, offering construction, engineering, environmental, industrial, and technology services |
552 | |||
| 30 |
Daugherty Business Solutionscareers.daugherty.com
A global consultancy firm with expertise in technology and business solutions, focusing on driving growth and fostering relationships within diverse industries |
518 | |||
| 31 |
NCM Associatesncmassociates.com
This company helps dealerships and businesses enhance profitability with business analysis tools, peer collaboration, 20 Group process, and consulting services |
468 | |||
| 32 |
Rem and Companyremandcompany.com
Provides free consulting services to small businesses affected by COVID-19 as a social impact initiative |
462 | |||
| 33 |
Valorem Replyvaloremreply.com
A leading digital transformation firm providing innovative solutions in IT modernization, data & AI, security, product transformation, and digital workplace services |
450 | |||
| 34 |
Cordell & Cordellcordellcordell.com
A community of legal professionals prioritizing personal growth and client success by providing high-quality representation with care and excellence |
420 | |||
| 35 |
Tetrasoft Inc.tetrasoft.us
A global digital services company specializing in innovative solutions for industries such as healthcare, insurance, and manufacturing using disruptive technologies and strategies |
416 | |||
| 36 |
Object Computing, Inc.objectcomputing.com
A modern consulting company using technology to create business solutions, accelerate outcomes, and leverage cutting-edge technologies like blockchain, machine learning, and IoT |
394 | |||
| 37 |
Sandberg Phoenixsandbergphoenix.com
A top law firm in the Midwest providing superior legal services in Business Law, Litigation, Health Law, Intellectual Property, and Products Liability nationwide |
392 | |||
| 38 |
Sullivan Higdon & Sinksignaltheory.com
Award-winning marketing agency specializing in creating standout brand experiences through human-centered design Focus areas include food and animal health industries |
377 | |||
| 39 |
IMKO Workforce Solutionsimko.com
A national employment agency offering temporary, temp-to-hire, direct placement, and onsite solutions for light industrial and clerical recruitment needs |
366 | |||
| 40 |
Anders CPAs + Advisorsanderscpa.com
A team of CPAs and industry advisors providing tax, audit, and advisory services to help clients achieve their goals and highest potential |
360 | |||
| 41 |
Conexon, LLCconexon.us
A company that collaborates with Rural Electric Cooperatives to bring fiber optic infrastructure to rural communities, providing comprehensive support from planning to sustainability |
346 | |||
| 42 |
Lineallineal.com
Innovative eDiscovery and legal technology solutions company specializing in data management, review strategies, and custom-tailored solutions for law firms and corporations globally |
345 | |||
| 43 |
Lewis Rice LLClewisrice.com
A leading regional law firm with 150+ diverse lawyers offering comprehensive legal services to businesses, individuals, and organizations for over a century |
340 | |||
| 44 |
Cascade Health Servicescascadestaff.com
Midwest-based provider of medical, therapy, and support staff for healthcare facilities Offers 24/7 staffing solutions with experienced professionals and comprehensive benefits package |
339 | |||
| 45 |
UB Greensfelderubglaw.com
A full-service, super-regional law organization providing customized legal solutions to businesses globally with expertise in various practice areas and industries |
334 | |||
| 46 | 326 | ||||
| 47 |
KellyMitchell Groupkellymitchell.com
An award-winning IT staffing and services provider, connecting professionals with opportunities and helping companies achieve their innovation goals nationwide |
319 | |||
| 48 |
NewGroundnewground.com
NewGround International specializes in planning, designing, and building innovative, branded spaces to accelerate growth and transform industry standards for clients |
283 | |||
| 49 |
KAI Enterpriseskai-db.com
A design and build enterprise with integrated services offering award-winning design and construction solutions for diverse projects nationwide |
249 | |||
| 50 |
OWN, Inc.weareown.com
They provide civil engineering and surveying services including planning, design, GIS, environmental assessments, surveys, drilling services, construction monitoring for various projects and clients |
219 | |||
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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 Nov 11, 2026.
More company lists in Missouri
- The largest companies in Missouri 1,495
- Multinational companies in Missouri 201
- Manufacturers in Missouri 162
- Retail chains in Missouri 143
- Education providers in Missouri 130
- Critical infrastructure operators in Missouri 120
- Healthcare providers in Missouri 118
- Hospitals and Health Care companies in Missouri 118
- Financial services firms in Missouri 116
- Companies with in-house R&D in Missouri 96
- Family-owned companies in Missouri 84
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- Public sector organisations in Missouri 78
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- Higher Education companies in Missouri 70
- IT Services and IT Consulting companies in Missouri 69
- Hardware manufacturers in Missouri 68
- IT services companies in Missouri 61
- Corporate groups and holding companies in Missouri 59
- Distributors and wholesalers in Missouri 57
- Financial Services companies in Missouri 53
- Logistics companies in Missouri 46
- Consulting firms in Missouri 43
- Contract manufacturers in Missouri 43
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 Minnesota 125
- 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