# Top 35 managed service providers in Virginia
Tamtam tracks 35 managed service providers headquartered in Virginia. This list ranks all of them by number of employees on LinkedIn, led by DXC Technology, Apex Systems and GTT. Their median headcount is 567. Half of them were founded in 2000 or later. The most common headquarters are Herndon (10), McLean (5) and Reston (4).
These Virginia-based companies primarily offer managed IT services and IT consulting, with a strong presence in the telecommunications sector. The list is dominated by large firms, many of which were founded in the 1990s and early 2000s, indicating a mature market. DXC Technology, with over 90,000 employees, assists global companies with IT modernization and security. Apex Systems specializes in strategy and managed services like application development and cybersecurity. GTT provides global managed network and security services, while QTS Data Centers offers secure infrastructure. Trianz delivers cloud adoption and AI transformation, and Transaction Network Services (TNS) provides Infrastructure-as-a-Service for various markets.
A clear pattern among these companies is their concentration in Northern Virginia, particularly in the cities of Herndon, McLean, and Reston. This geographic clustering suggests a regional hub for IT and telecommunications expertise. Many of these firms, such as ePlus inc. and DMI, focus on comprehensive IT solutions, including cloud services, cybersecurity, and data center management, often serving both public and private sector clients.
๐บ๐ธ Virginia ยท 35 companies ยท Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [DXC Technology](https://www.tamtam.ai/c/dxc-technology) (dxc.com)
It assists global companies in managing critical systems, modernizing IT, optimizing data, and ensuring security across various cloud environments. | IT Services and IT Consulting | ๐บ๐ธ Ashburn | 90,597 | 2017 |
| 2 | [Apex Systems](https://www.tamtam.ai/c/apex-systems) (apexsystems.com)
Specializes in strategy, transformation, managed services including application development, data, cloud, cybersecurity, and AI solutions across global markets. | IT Services and IT Consulting | ๐บ๐ธ Glen Allen | 13,945 | 1995 |
| 3 | [GTT](https://www.tamtam.ai/c/gtt-arlington) (gtt.net)
Global managed network and security services provider offering advanced cloud, networking, and security solutions with professional services and exceptional support worldwide | Telecommunications | ๐บ๐ธ Arlington | 3,917 | |
| 4 | [QTS Data Centers](https://www.tamtam.ai/c/qts-data-centers) (quantumfiber.com)
Provider of data center solutions with over 9 million sq ft of space in North America Offers secure infrastructure, connectivity, and premium customer service | IT Services and IT Consulting | ๐บ๐ธ Sterling | 2,591 | 2005 |
| 5 | [Trianz](https://www.tamtam.ai/c/trianz) (trianz.com)
Delivers cloud adoption and AI transformation through a unified platform for migration, modernization, multi-cloud management, FinOps, and autonomous federated AI data intelligence. | Technology, Information and Internet | ๐บ๐ธ Herndon | 2,369 | 2001 |
| 6 | [Transaction Network Services (TNS)](https://www.tamtam.ai/c/transaction-network-services-tns) (tnsi.com)
A global provider of Infrastructure-as-a-Service solutions for financial, communications, and payments markets, supporting secure, flexible, and efficient interactions worldwide | Telecommunications | ๐บ๐ธ Reston | 2,076 | 1990 |
| 7 | [ePlus inc.](https://www.tamtam.ai/c/eplus-inc) (eplus.com)
Leading provider of comprehensive IT solutions, including security, cloud services, data migration, data center management, collaboration, and networking expertise, driven by innovation and customer-centric focus | IT Services and IT Consulting | ๐บ๐ธ Herndon | 2,071 | 1990 |
| 8 | [DMI](https://www.tamtam.ai/c/dmi) (dminc.com)
provides digital services including cybersecurity, cloud, application development, and infrastructure support to public and private sector clients | IT Services and IT Consulting | ๐บ๐ธ McLean | 2,001 | 2002 |
| 9 | [Red River](https://www.tamtam.ai/c/red-river) (redriver.com)
Provides technology integration services with expertise in security, networking, analytics, collaboration, mobility, and cloud solutions for businesses and government. | IT Services and IT Consulting | ๐บ๐ธ Chantilly | 1,527 | 1995 |
| 10 | [22nd Century Technologies Inc.](https://www.tamtam.ai/c/22nd-century-technologies-inc) (tscti.com)
Providing managed IT services and solutions including digital transformation, cloud migration, cybersecurity, application modernization, and workforce support for government agencies. | IT Services and IT Consulting | ๐บ๐ธ McLean | 1,392 | 1997 |
| 11 | [XO Communications](https://www.tamtam.ai/c/xo-communications) (verizon.com)
Provides extensive IP and Ethernet network services including private data networking, cloud connectivity, unified communications, voice, internet access, and managed services. | Telecommunications | ๐บ๐ธ Herndon | 1,093 | 1996 |
| 12 | [Idexcel](https://www.tamtam.ai/c/idexcel) (idexcel.com)
Provider of Professional Services and Technology Solutions specializing in Cloud, Data Platforms, Automation, and AI with global presence and customer-centric focus | IT Services and IT Consulting | ๐บ๐ธ Herndon | 889 | 1998 |
| 13 | [Iron Bow Technologies](https://www.tamtam.ai/c/iron-bow-technologies) (ironbow.com)
We provide innovative IT solutions and services for government, commercial, and healthcare clients, focusing on collaboration, strategic insight, and continuous advancement in technology | IT Services and IT Consulting | ๐บ๐ธ Herndon | 870 | |
| 14 | [SAP NS2](https://www.tamtam.ai/c/sap-ns2) (sapns2.com)
The company offers cost-effective solutions with quick deployment times, robust support, and cleared personnel for mission-critical applications, leveraging industry-leading software tools and expertise | IT Services and IT Consulting | ๐บ๐ธ Herndon | 791 | |
| 15 | [AIS (Applied Information Sciences)](https://www.tamtam.ai/c/ais-applied-information-sciences) (ais.com)
IT transformation firm specializing in compliant cloud and data solutions for large enterprises, governments, and defense agencies, driving innovation and modernization | IT Services and IT Consulting | ๐บ๐ธ Reston | 768 | 1982 |
| 16 | [Ntiva, Inc.](https://www.tamtam.ai/c/ntiva-inc) (ntiva.com)
A growing managed services company specializing in IT solutions, strategic direction, infrastructure management, and advanced security solutions for businesses nationwide | IT Services and IT Consulting | ๐บ๐ธ McLean | 608 | 2004 |
| 17 | [CPG](https://www.tamtam.ai/c/cpg) (cpgbeyondthecloud.com)
This company provides design, construction, and analytics-driven operations solutions for conventional, hyperscale, and edge data centers in North America | IT Services and IT Consulting | ๐บ๐ธ Ashburn | 602 | 2000 |
| 18 | [Mythics](https://www.tamtam.ai/c/mythics) (mythics.com)
An award-winning Oracle systems integrator, consultant, and managed services provider offering a full range of Oracle products and solutions to various industries worldwide | IT Services and IT Consulting | ๐บ๐ธ Virginia Beach | 567 | 2000 |
| 19 | [EdgeConneX](https://www.tamtam.ai/c/edgeconnex) (edgeconnex.com)
Global data center provider offering high-powered, purpose-built solutions for customers at any scale worldwide, including Edge, Far Edge, Hyperscale, and Edge Cable Landing Stations | Telecommunications | ๐บ๐ธ Herndon | 504 | 2009 |
| 20 | [SMS Data Products Group, Inc.](https://www.tamtam.ai/c/sms-data-products-group-inc) (sms.com)
Providing engineering, cybersecurity, and digital transformation solutions to modernize infrastructure, optimize operations, and support federal government missions with quality and integrity. | IT Services and IT Consulting | ๐บ๐ธ McLean | 455 | 1976 |
| 21 | [NJVC-LLC](https://www.tamtam.ai/c/njvc-llc) (chenegamios.com)
Innovative IT services provider for government and commercial clients, offering solutions in enterprise services, cybersecurity, IT transformation, data analytics, and automation | IT Services and IT Consulting | ๐บ๐ธ Lorton | 438 | 2000 |
| 22 | [Virginia Information Technologies Agency](https://www.tamtam.ai/c/virginia-information-technologies-agency) (vita.virginia.gov)
A technology partner for Virginia agencies, VITA connects, protects, and innovates IT services, infrastructure, and cybersecurity for state workers and residents | IT Services and IT Consulting | ๐บ๐ธ Richmond | 409 | 2003 |
| 23 | [Softility, Inc.](https://www.tamtam.ai/c/softility-inc) (softility.com)
Softility leverages data and automation to solve IT, Network, Security, and Cloud Operations challenges for large organizations, driving efficiency and digital transformation through innovative solutions | IT Services and IT Consulting | ๐บ๐ธ Herndon | 345 | |
| 24 | [China Telecom Americas](https://www.tamtam.ai/c/china-telecom-americas) (ctamericas.com)
Providing customized network and communication solutions for multinational customers, with a focus on the Americas and Asia, through a wide range of services | Telecommunications | ๐บ๐ธ Herndon | 323 | 2002 |
| 25 | [mindSHIFT, a wholly owned subsidiary of Ricoh USA, Inc.](https://www.tamtam.ai/c/mindshift-a-wholly-owned-subsidiary-of-ricoh-usa-inc) (mindSHIFT.com)
A leading IT outsourcing and cloud services provider dedicated to delivering IT Peace of Mind for businesses of all sizes | IT Services and IT Consulting | ๐บ๐ธ Sterling | 314 | 1999 |
| 26 | [Lee Technologies](https://www.tamtam.ai/c/lee-technologies) (leetechnologies.com)
A leading provider of comprehensive data center solutions, designing, building, operating, and maintaining critical facilities for top private and public sector organizations worldwide | Facilities Services | ๐บ๐ธ Fairfax | 80 | 1983 |
| 27 | [KAT ENTERPRISE LLC](https://www.tamtam.ai/c/kat-enterprise-llc) (katenterprise.com)
A technology company providing high-value IT services with focus on innovation, custom programming, application development, digital transformation, and business process solutions | IT Services and IT Consulting | ๐บ๐ธ Reston | 57 | 2016 |
| 28 | [Data Machines](https://www.tamtam.ai/c/data-machines) (datamachines.com)
A data analytics company specializing in cloud architectures, solving complex problems in data analytics, DevSecOps, machine intelligence, and data science | IT Services and IT Consulting | ๐บ๐ธ Reston | 45 | 2016 |
| 29 | [Lore Systems](https://www.tamtam.ai/c/lore-systems) (lore.net)
A provider of IT professional services including managed services, network engineering, hosting, cloud computing for government, commercial, association & nonprofit, and SMB clients | IT Services and IT Consulting | ๐บ๐ธ Herndon | 39 | 1995 |
| 30 | [SingleComm](https://www.tamtam.ai/c/singlecomm) (singlecomm.com)
Provider of omnichannel ACD, workforce management tools, and WebRTC platform for call centers, designed to enhance agent performance and customer service | Software Development | ๐บ๐ธ Richmond | 29 | 2014 |
| 31 | [Richweb, Inc.](https://www.tamtam.ai/c/richweb-inc) (richweb.com)
A technology solutions company specializing in software development, mobile app development, website and database development, and network infrastructure services | IT Services and IT Consulting | ๐บ๐ธ Ashland | 24 | 1995 |
| 32 | [Advantage Pro](https://www.tamtam.ai/c/advantage-pro) (advantagepro.us)
A startup specializing in digital transformation, managed services, and consulting, striving to innovate and drive business growth | IT Services and IT Consulting | ๐บ๐ธ Leesburg | 23 | 2010 |
| 33 | [Xgility](https://www.tamtam.ai/c/xgility) (ais.com)
Specializing in Microsoft cloud, security, collaboration, and digital workplace solutions, driving transformation for organizations by empowering employees with innovative technology and services | IT Services and IT Consulting | ๐บ๐ธ Ashburn | 20 | 2011 |
| 34 | [Qubrid AI](https://www.tamtam.ai/c/qubrid-ai) (platform.qubrid.com)
Provides enterprise-grade GPU infrastructure, low-latency API inference, and orchestration for open-weight AI models, focusing on AI engineering teams and SaaS enterprises. | Software Development | ๐บ๐ธ McLean | 16 | 2024 |
| 35 | [Advanced Network Solutions (ANS)](https://www.tamtam.ai/c/advanced-network-solutions-ans) (ansnetworks.com)
An IT Managed Services Provider based in Northern Virginia offering productivity-enabling IT services to small and medium-sized businesses through cloud services, consulting, and management solutions | IT Services and IT Consulting | ๐บ๐ธ Dulles | 6 | 1999 |
## 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 Virginia
- [The largest companies in Virginia](https://www.tamtam.ai/l/largest-companies-virginia) (2,764)
- [IT Services and IT Consulting companies in Virginia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-virginia) (485)
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- [AI companies in Virginia](https://www.tamtam.ai/l/ai-companies-virginia) (127)
- [Manufacturers in Virginia](https://www.tamtam.ai/l/manufacturers-virginia) (125)
- [Defense and Space Manufacturing companies in Virginia](https://www.tamtam.ai/l/defense-and-space-manufacturing-companies-virginia) (122)
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- [Subscription businesses in Virginia](https://www.tamtam.ai/l/subscription-businesses-virginia) (114)
- [SaaS companies in Virginia](https://www.tamtam.ai/l/saas-companies-virginia) (103)
- [Non-profit Organizations companies in Virginia](https://www.tamtam.ai/l/non-profit-organizations-companies-virginia) (102)
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- [Cybersecurity companies in Virginia](https://www.tamtam.ai/l/cybersecurity-companies-virginia) (95)
## The same list elsewhere in United States
- [Managed service providers in the United States](https://www.tamtam.ai/l/managed-service-providers-united-states) (889)
- [Managed service providers in California](https://www.tamtam.ai/l/managed-service-providers-california) (152)
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- [Managed service providers in New Jersey](https://www.tamtam.ai/l/managed-service-providers-new-jersey) (36)
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- [Managed service providers in Washington State](https://www.tamtam.ai/l/managed-service-providers-washington-state) (35)
- [Managed service providers in Colorado](https://www.tamtam.ai/l/managed-service-providers-colorado) (31)
- [Managed service providers in Massachusetts](https://www.tamtam.ai/l/managed-service-providers-massachusetts) (26)
- [Managed service providers in Pennsylvania](https://www.tamtam.ai/l/managed-service-providers-pennsylvania) (26)
- [Managed service providers in New York](https://www.tamtam.ai/l/managed-service-providers-new-york) (54)
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Source: https://www.tamtam.ai/l/managed-service-providers-virginia