Professional Engineering Services (PES)


Nancy L. Doolin
Corporate Contracting Officer
Phone:  703.918.4335
Fax : 703. 903-9745

Theodore J. Thanos
Contracts Manager
Phone:  703.918.4336
Fax: 703.903.9745

DDL OMNI Engineering LLC
8260 Greensboro Drive
Suite 600
McLean, VA  22102



Contract Number: GS-23F-0048K
Contract Period: 3/24/2010 – 11/23/2014 (Option 2)

The DDL OMNI GSA Professional Engineering Services (PES) Schedule provides a broad spectrum of services across engineering disciplines to agencies and other organizations. GSA has completed the federally mandated contracting requirements required prior to obtaining services.

The DDL OMNI GSA PES Schedule contains six Special Item Numbers (SINs) that comprise the distinct phases of an engineering project (mechanical, electrical, chemical, and components of civil engineering).

DDL OMNI has experience in guiding organizations in the achievement of engineering objectives.  Services are offered in six Special Item Number (SIN) areas:

  • SIN 871-1: Strategic Planning for Technology Programs/Activities
  • SIN 871-2: Concept Development and Requirements Analysis
  • SIN 871-3: System Design, Engineering and Integration
  • SIN 871-4: Test and Evaluation
  • SIN 871-5: Integrated Logistics Support
  • SIN 871-6: Acquisition and Life-Cycle Management

Online access to contract ordering information, terms and conditions, up-to-date pricing, and the option to create an electronic delivery order are available through GSA Advantage!TM,  a menu-driven database system.