Our Expansion And Strategic Acquisition

For more than 75 years, we continue to grow through organic expansion and strategic acquisitions. Here’s a look back at the talent and skills we’ve acquired along the way. To see our journey through projects, visit our History/Timeline.


Xator Corporation

The addition of Xator is a natural extension of our growth strategy, adding important solutions and technologies that advance global security and protect critical infrastructure during a time of increasing and evolving threats. The acquisition expands Parsons’ presence within the U.S. Special Operations Command, the Intelligence Community, Federal Civilian customers, and global critical infrastructure markets, while providing new customer access at the Department of State.


Echo Ridge LLC
Echo Ridge complements our recent acquisitions, expands our full-life-cycle space systems provider offerings, and extends our product offerings acquired through QRC and Braxton Technologies. This acquisition provides us with new capabilities in position, navigation, and timing devices (PNT); modeling, simulation, testing, and measurement tools; and deployable software defined radio (SDR) products and signal processing services—all critical capabilities our customers need as we help them create the future.

BlackHorse Solutions, Inc.
The addition of BlackHorse Solutions increases our scale in the areas of cyber, electronic warfare, and information dominance, enhancing Parsons’ position to pursue and win upcoming large joint all-domain contract opportunities, which is a key component of our national defense strategy. BlackHorse expands Parsons’ customer base and brings differentiated best-in-class capabilities in cyber, digital operations, artificial intelligence/machine learning, and full-spectrum operations.


Braxton Science & Technology Group
BSTG’s broad portfolio of commercial off-the-shelf products—as well as their sustainment of government off-the-shelf products—provide mission critical solutions including spacecraft ground control and spacecraft integration. BSTG operates at the forefront of satellite operations, ground system automation, flight dynamics, and spacecraft and antenna simulation for the U.S. Department of Defense and Intelligence Community.


QRC Technologies
Military hardware products specializing in radio frequency spectrum survey; record and playback; signals intelligence; and electronic warfare missions for the U.S. Special Operations Command, U.S. Intelligence Community, U.S. Navy, U.S. Marine Corps and international customers.

Advanced technologies in geospatial intelligence, big data analytics, and insider and counterintelligence threats.


Polaris Alpha
Advanced, Technology-Focused Provider of Innovative Mission Solutions for Complex Defense, Intelligence, and Security Customers, as Well as Other U.S. Federal Government Customers.


Williams Electric Company
Control system integration, electrical and general contracting, and energy infrastructure solutions to the U.S. Government


T.J. Cross Engineers, Inc.
Engineering, Design, and Professional Consulting Services to the Oil and Gas Industry


Integrated Systems and Infrastructure Solutions within the Rail and Transit, Road and Highway, Structures, Water, Freight, and Intelligent Transportation Systems Markets

Secure Mission Solutions
End-to-End Integrated Security Solutions in the Electronic, Information, Communications, Network, and Cybersecurity Domains


First Support Services, Inc.
Facility Operations and Maintenance Services, Logistics Support, Transportation Support, and Telecommunications Operations Services to the U.S. Government


CT MAIN Engenheiros
Project Management and Technical Services to the Energy and Infrastructure Market in Brazil

O’Connor Associates Environmental Inc.
Environmental Site Investigation and Remediation


SPARTA, Inc. (dba Cobham Analytic Solutions)
Advanced Systems Engineering, Cybersecurity, and Mission Support Services to the Defense Intelligence, and Homeland Security Sectors of the U.S. Government


Vasey Aviation Group LLC
Program Management, Operations, Strategy, and Capital Planning Services to the Aviation Industry


McMunn Associates, Inc. (MAI)
Analytical, Technical, Training, and Management Services and Solutions to the U.S. Intelligence Community


3D/International (3D/I)
Program Management, Condition Assessment, Design, Construction, and Information Technology for the Vertical Facility Environment


RCI Construction Group (RCI)
Water and Wastewater, Transportation, Urban Infrastructure, Civil and Industrial Construction, Environmental Site Remediation, Residential and Commercial Development

The Alaris Group LLC (Alaris)
Wireless Telecommunications Site Development Services

META Associates, Inc (META)
Program Management Ranging from Facility Planning to Design-build Construction


MWC (MW Consultants)
Engineering and Construction for Pharmaceuticals, Biotechnology, Life Sciences

PFI (Process Facilities Inc.)
Program Management, Manufacturing for Pharmaceuticals, Life Sciences

Primus Infrastructure Inc.
Water and Infrastructure, Capital Improvement Projects, Program Management


H.E. Hennigh, Inc.
Telecommunications General Contracting

Finley McNary Engineers, Inc.
Bridge Engineering


Protect Air, Inc.
Vehicle Emissions Inspection and Compliance, Data Management


Gilbert/Commonwealth Inc. (Gilbert)
Power Plant Design and Nuclear Facility Decommissioning


Steinman Boynton Gronquist & Birdsall (Steinman, SBGB)
Bridge Design and Engineering


The C.T. Main Corporation
Power and Industrial Engineering

Harland Bartholomew and Associates (HBA)
Urban and Military Planning

Barton-Aschman Associates (BAA)
Traffic Planning


Brian Watt & Associates, Inc.
Petroleum Drilling and Construction


Engineering Science, Inc. (ES, PES)
Environmental Consulting Services


Parsons Corporation
Holding Company for RMP, DCC, and SIP

Parsons Constructors, Inc. (PCI)
Construction Services


De Leuw, Cather & Company (DCC)
Transportation Engineering, Design, Construction

SIP, Inc.
Petroleum and Chemical Design and Engineering


Barry and Richardson
Sulfur Recovery, Mining, Petrochemical Design


Dillingham Engineering Party
Mining, Petrochemical Engineering Design


Vitro Engineering
Nuclear Fuel Reprocessing


Anaconda-Jurden Associates
Mining, Engineering, Design/Construction of Metallurgy Facilities


E.A. Bender Drilling Company
Oil Well Drilling and Exploration


The Ralph M. Parsons Company (RMP)
Engineering, Procurement, Construction Services for Government, Petrochemical, and Infrastructure Clients

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