These companies in Delaware are primarily professional services firms, ranging from large global business administration providers to specialized IT and HR services. They include CSC, which offers global business administration and compliance solutions, and Integrity Staffing Solutions, connecting talent with companies. Other examples are The Siegfried Group, providing financial executives with leadership advisory, and zeb, a digital transformation strategy company.
The data shows a strong concentration of headquarters in Wilmington, with most of the listed companies based there. The firms also represent a mix of established companies like The Siegfried Group, founded in 1988, and newer entities such as Allied Market Research, founded in 2013, indicating a diverse founding era.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
CSCcscglobal.com
Global business administration and compliance solutions for alternative asset managers, capital markets, digital brand protection, domain management, and corporate tax software services. |
8,233 | |||
| 2 |
Integrity Staffing Solutionsintegritystaffing.com
Connecting great talent with companies, generating opportunities for success, and driving the workforce forward with thousands of job opportunities available nationwide |
1,642 | |||
| 3 |
The Siegfried Groupsiegfriedgroup.com
An entrepreneurial leadership organization providing financial executives with leadership advisory, talent delivery, and financial advisory services to help them succeed |
1,595 | |||
| 4 | 768 | ||||
| 5 | 725 | ||||
| 6 |
EC Innovations, Inc.ecinnovations.com
Deliver bespoke localization services combining technology, linguistics, and expertise to create authentic local versions of key assets worldwide. |
717 | |||
| 7 |
TekisHub Consulting Servicestekishub.com
Staff augmentation, software development, and recruitment process outsourcing company providing multi-platform application solutions globally from USA and India Specializing in high-quality service and cost-effective solutions |
658 | |||
| 8 |
Careermindscareerminds.com
This company offers outplacement, executive coaching, and career development services globally in multiple languages using technology and personalized coaching |
552 | |||
| 9 |
Allied Market Researchalliedmarketresearch.com
A market research and business consulting firm based in Portland, Oregon, offering valuable insights to clients through qualitative and quantitative research across industries |
433 | |||
| 10 |
PATTERNS LLCpatternshiring.com
A leading Business Process Outsourcing company specializing in staffing solutions, focused on providing top talent efficiently and transparently through innovative technology and personalized service |
421 | |||
| 11 |
Medical Billers and Coders (MBC)medicalbillersandcoders.com
A nationwide consortium of Medical Billers and Coders providing customized billing solutions to physicians with a focus on local expertise and technology |
399 | |||
| 12 |
Escalon Servicesescalon.services
Outsourced finance, accounting, tax, HR, and insurance services for startups, SMBs, and non-profits to simplify back-office operations. |
358 | |||
| 13 |
Vizva Consultancy Servicesvizvaconsultancyservices.com
Connecting people with opportunities to help businesses succeed and careers flourish, promoting united growth without inequity Stand for "entire world" in Sanskrit |
355 | |||
| 14 |
TT Consultantsttconsultants.com
A global leader in IP, technology intelligence, business research, and innovation support blending AI and human expertise for clients worldwide |
348 | |||
| 15 |
CSC Global Financial Marketscscgfm.com
Global provider of business administration, compliance, alternative asset management services, capital markets transactions, DNS management, digital fraud protection, and corporate tax software solutions |
340 | |||
| 16 |
SD Solutionssdsolutions.tech
Scaling Partner providing talent management, consulting, and staffing services for tech companies worldwide Offers end-to-end solutions for global growth needs |
338 | |||
| 17 |
Richards, Layton & Fingerrlf.com
A leading Delaware law firm offering top-notch counsel and representation in corporate law, governance, mergers, acquisitions, and civil matters for global clients |
336 | |||
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. | |||||
| 18 |
Wattmonk Technologieswattmonk.com
A leading solar company revolutionizing clean energy with innovative solutions for a sustainable future, offering comprehensive solar design services #SolarDesignCompany |
318 | |||
| 19 |
HashRoothashroot.com
This company offers AI, Cloud & DevOps, Data Center management, staff augmentation, IT automation, and digital transformation solutions to global clients. |
282 | |||
| 20 |
IT IDOL Technologiesitidoltechnologies.com
A fast-growing company offering high-quality IT solutions, with skilled developers experienced in various programming languages for website and mobile app development |
279 | |||
| 21 |
BURGEON IT SERVICESburgeonits.com
Burgeon provides technical and IT staff augmentation solutions globally, offering contract, contract-to-hire, direct hire, and payroll services with a focus on delivering skilled consultants |
261 | |||
| 22 |
Raas Infotekraasinfotek.com
A global IT services company offering end-to-end solutions, with a focus on building enduring relationships and adding value to clients' business growth |
210 | |||
| 23 |
Binmilebinmile.com
Global IT services company specializing in digital transformation, software engineering, web and mobile application development, IoT solutions, and quality assurance for various industries worldwide |
195 | |||
| 24 |
NetBounce Placementnetbounceplacement.com
A professional job search firm specializing in direct hire recruitment of passive candidates, delivering impactful solutions for client needs |
193 | |||
| 25 |
Grant & Eisenhofer P.A.gelaw.com
Specializing in complex financial litigation, including securities class actions, corporate governance issues, consumer protection, and more, achieving stellar results for institutional investors |
184 | |||
| 26 |
Inno Valley Worksinnovalleyworks.com
Inno Valley Works is a top Salesforce Implementation partner offering a range of services including setup, customization, integration, and staff training |
146 | |||
| 27 |
Codleo Consultingcodleo.com
Provides smart, scalable, and human-centric digital solutions, empowering organizations to unlock higher ROI through CRM implementation, marketing automation, analytics, and AI. |
136 | |||
| 28 |
Technoladderstechnoladders.com
Fast-growing salesforce development company offering expertise, project management, and support to business organizations, with tailored solutions and industry-leading services |
39 | |||
| 29 |
Corp1, Inc., - Registered Agent & Corporate Filingscorp1.com
A women-owned and veteran-owned company specializing in corporate services including company formation, registered agent services, corporate filings, and UCC searches |
32 | |||
| 30 |
YF Consultantsyf-consultants.com
A pioneering hospitality management consulting company delivering innovative strategies, personalized services, and profitable opportunities through comprehensive expertise and solutions |
24 | |||
| 31 |
Data Doersdatadoers.co
A consulting firm specializing in data solutions, offering services in data engineering, analytics, governance, business intelligence, visualization, machine learning, and data-driven applications |
8 | |||
| 32 |
Digicomplishdigicomplish.com
Providing transformative talent, digital, and upskilling services to empower individuals and businesses to thrive in the digital age |
7 | |||
| 33 |
Sustainability Businesssustainability.business
A company focused on sustainability, energy efficiency, and social & environmental strategies for businesses to reduce risks and optimize resources |
3 | |||
| 34 |
AutologicAIautologicai.com
A leading software consulting firm specializing in driving digital transformation through automation, AI, and innovation for small and medium-sized enterprises |
3 | |||
| 35 |
AVEN ADVISORSavenadvisors.com
A company dedicated to making a positive impact by providing great services or products that benefit the common good |
1 | |||
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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 Delaware
- The largest companies in Delaware 579
- IT Services and IT Consulting companies in Delaware 108
- Multinational companies in Delaware 106
- SaaS companies in Delaware 103
- IT services companies in Delaware 93
- Software Development companies in Delaware 83
- AI companies in Delaware 42
- Technology, Information and Internet companies in Delaware 39
- AI-native companies in Delaware 33
- Manufacturers in Delaware 33
- Companies with in-house R&D in Delaware 32
- Financial Services companies in Delaware 30
- AI consultancies and service providers in Delaware 28
- Consulting firms in Delaware 27
- Education providers in Delaware 27
- Subscription businesses in Delaware 27
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