| # | Company | Employees |
|---|---|---|
| 1 |
Kleinfelderkleinfelder.com
Engineering, science, and construction firm offering solutions for transportation, water, energy, and private infrastructure projects with a dedicated, cross-disciplinary team |
2,656 |
| 2 |
Power Digital Marketingpowerdigitalmarketing.com
Growth marketing firm utilizing proprietary technology to analyze digital ecosystems and develop custom data-driven playbooks for revenue growth and brand recognition worldwide. |
2,318 |
| 3 |
NextGen | GTA: A Kelly Telecom Companykellytelecom.com
Provider of telecom engineering and deployment solutions for legacy, 5G, and private networks, offering staffing, scope of work, and direct hire services |
609 |
| 4 |
Nan McKay and Associates (NMA)nanmckay.com
A leading provider of innovative solutions for communities nationwide, specializing in compliance-focused services for housing authorities, property management companies, and municipalities |
483 |
| 5 |
Ninyo & Moore, A SOCOTEC Companyninyoandmoore.com
Providing geotechnical and environmental engineering, soil and materials testing, and inspection services for governmental, commercial, and private sector clients since 1986 |
477 |
| 6 |
RICKrickengineering.com
Multi-disciplinary planning, design, and engineering firm with over 65 years of experience serving public and private sector clients in various disciplines |
471 |
| 7 |
ECG Management Consultantsecgmc.com
Healthcare consulting firm working with clients to improve healthcare access, sustainability, and effectiveness through honest, tailored solutions and courageous initiatives |
459 |
| 8 |
Ondarocasknx.com
A leading ServiceNow Elite partner specializing in digital transformation, offering end-to-end solutions to improve service quality and reduce costs for enterprise clients |
307 |
| 9 |
GEOCONgeoconinc.com
A California corporation offering geotechnical engineering, environmental consulting, construction inspections, materials testing, environmental remediation contracting, and operating soils and materials testing laboratories |
255 |
| 10 |
ATA Engineeringata-e.com
Innovative engineering solutions using test, analysis, and computer-aided engineering to address manufacturers' challenges in aerospace, mechanical, and other industries |
240 |
| 11 | 236 | |
| 12 |
SoftCloudssoftclouds.com
Guiding customers digital transformation journeys, delivering innovative, creative, consultative solutions, improving customer relationships, corporate profitability, business performance. Honesty, integrity, respect, innovation, creativity focus on employees. |
205 |
| 13 |
Retirement Benefits GroupRBGADVISORS.com
Independent retirement plan consulting firm focused on creating customized retirement plans aligned with business goals, corporate culture, and employee needs |
49 |
| 14 |
Cyth Systems, Inc.cyth.com
Specializing in Automation, Measurement, and Controls projects, we provide tailored solutions using mostly standard products to reduce risk and meet client specifications efficiently |
47 |
| 15 |
5P Consulting5pconsulting.biz
A digital transformation firm specialized in Salesforce implementation, data management, and fractional IT Management, helping businesses scale through technology solutions |
13 |
| 16 |
Bulldog Drummond (Acquired by Envoy)bulldogdrummond.com
A creative agency specializing in uncovering insights, developing strategies, and designing solutions to bring new ideas, brands, and products to market |
8 |
| 17 |
Cloud Constructioncloudconstructionsd.com
Specializes in providing nationwide Salesforce implementation consulting services, with expertise in custom business process administration and development on the Salesforce platform |
6 |
| 18 |
KeyNode Solutionskeynodesolutions.com
Full-service Salesforce Consulting Partner specializing in implementation, integration, training, development, and customization to maximize business efficiency and revenue nationwide |
6 |
| 19 |
Apphienz (Salesforce Partner)apphienz.com
A Salesforce Consulting Partner specializing in sales, services, and marketing solutions for corporations and nonprofits to enhance customer connections and business operations |
5 |
| 20 |
The Culture Peopletheteambuildingexperts.com
This company specializes in transforming workplace culture by customizing strategies for engagement, communication, team development, and lasting cultural change |
4 |
| 21 |
Solomon & COthesolomonco.com
IT/Management consulting firm providing end-to-end solutions for electrical, IT, and Solar needs Specializing in improving internal IT infrastructure and energy efficiency for organizations |
4 |
| 22 |
N煤age Global LLCnuageglobal.com
Cloud-based consultancy helping businesses optimize processes, reduce costs, utilize remote workforce, and navigate evolving operational landscapes for growth, success, and profit |
4 |
| 23 |
HyperPlanarhyperplanar.com
A training and consulting company specializing in data science, analytics, and ML/AI Provides online/offline courses, as well as consulting services for various industries |
4 |
| 24 |
AgosITagosit.com
This company offers customized IT and CSV solutions to simplify complexities for clients while ensuring regulatory compliance and data integrity |
3 |
| 25 |
CloudCompassmycloudcompass.com
Full-service Salesforce consulting partner specializing in Service/Sales/Community Cloud implementations, focusing on understanding client needs and delivering efficient 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 Nov 2, 2026.
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