Great Hill Solutions

Great Hill Solutions, LLC (Great Hill), a Seneca Nation Group Company

The Seneca Nation Group (SNG) is the federal government contracting business of Seneca Holdings, which is wholly owned by the Seneca Nation. We meet the mission-critical needs of our Federal Civilian, Defense, and Intelligence Community customers across a variety of domains. The financial stability and support from our parent company, Seneca Holdings, enables Great Hill to meet customer requirements in ways not normally available from small businesses. Great Hill provides staffing and subject matter expertise to support the broad range of support activities required by our federal customers.

  • Research
  • Strategy
  • Design
  • Development and integration
  • Operations
  • Management
  • Migration
  • Maintenance


Great Hill has implemented an ISO-based integrated management system focused on customer success and information security. Certifications include:

  1. ISO 9001:2015 Quality Management System
  2. ISO/IEC 20000-1:2018 Service Management System
  3. ISO/IEC 27001:2013 Information Security Management System

Great Hill Solutions, LLC (Great Hill), a Seneca Nation Group company, is one of the wholly owned subsidiaries of Seneca Holdings, LLC, which is the business arm of the Seneca Nation.

Company Profile

Unique Entity ID No. (SAM): D3DYHNPJ6W14
DUNS Number: 08-1088054
CAGE Code: 821D8

Tribal 8(a)


14200 Park Meadow Drive
Suite 125-N
Chantilly, VA 20151

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Across the country, we are helping our customers achieve their mission goals.
Seneca Holdings

Seneca Holdings

Learn more about our parent company.