Expansion Through Strategic Acquisitions

For 80 years, we’ve continued 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.


I.S. Engineers

I.S. Engineers is a Texas-based full-service consulting engineering firm, which specializes in transportation engineering, including roads and highways, and program management. This acquisition is consistent with Parsons’ strategy of completing accretive acquisitions of companies with revenue growth and adjusted EBITDA margins exceeding 10%, while adding critical infrastructure talent and bolstering the company’s portfolio in large and growing states.

Sealing Technologies, Inc. 

Founded in 2012, SealingTech expands Parsons’ customer base across the Department of Defense and Intelligence Community, and further enhances the company’s capabilities in defensive cyber operations; integrated mission-solutions powered by artificial intelligence (AI) and machine learning (ML); edge computing and edge access modernization; critical infrastructure protection; and secure data management.

IPKeys Power Partners And IPKeys Cyber Partners

IPKeys Power Partners and IPKeys Cyber Partners enhance our critical infrastructure protection capabilities through comprehensive cloud-based cybersecurity, software solutions that operate at the intersection of information and operational technology (IT and OT), and technologies that will accelerate the global energy transition. This acquisition reinforces our position and extends our capabilities in the critical infrastructure protection, grid modernization, and cyber resiliency markets, as the digitalization of infrastructure accelerates and necessitates cybersecurity, safety, and efficiency improvements.


Xator Corporation

The addition of Xator is a natural extension of our growth strategy. Xator adds solutions and technologies that advance global security and protect critical infrastructure, which is especially important during times of increasing and evolving threats. Our presence is expanded within the US Special Operations Command, Intelligence Community, federal civilian customers, and global critical infrastructure markets. Furthermore, new customers are provided access at the Department of State.


Echo Ridge LLC
The acquisition of Echo Ridge complements our other recent additions. It expands our full-life-cycle space systems provider offerings and extends our products acquired through QRC and Braxton Technologies. This acquisition provides us with new capabilities in position, navigation, and timing devices (PNT). It also gives us capabilities in modeling, simulation, testing, and measurement tools. This includes deployable software defined radio (SDR) products and signal processing services. These are all critical capabilities our customers need as we help them as we help them provide solutions for a better tomorrow.

BlackHorse Solutions, Inc.

The addition of BlackHorse Solutions increases our scale in the areas of cyber, electronic warfare, and information dominance. It enhances our position to pursue and win upcoming large joint all-domain contract opportunities. This is a key component of our national defense strategy. BlackHorse expands our 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 and sustainment of government off-the-shelf products provides mission-critical solutions. This includes spacecraft ground control and spacecraft integration. BSTG works for the US Department of Defense and Intelligence Community. They’re at the forefront of satellite operations, ground system automation, flight dynamics, and spacecraft and antenna simulation.


QRC Technologies
QRC Technologies is a provider of military hardware products. They specialize in radio frequency spectrum survey, record and playback, signals intelligence, and electronic warfare missions. Their products serve the US Special Operations Command, US Intelligence Community, US Navy, US Marine Corps, and international customers.

OGSystems provides advanced technologies in geospatial intelligence, big data analytics, and insider and counterintelligence threats.


Polaris Alpha
Polaris Alpha is an advanced, technology-focused provider of innovative mission solutions. They provide for complex defense, intelligence, and security customers as well as other US federal government customers.


Williams Electric Company
Williams Electric Company provides control system integration, electrical and general contracting, and energy infrastructure solutions to the US government.


T.J. Cross Engineers, Inc.
T.J. Cross Engineers supplies engineering, design, and professional consulting services to the oil and gas industry.



Delcan specializes in integrated systems and infrastructure solutions. They operate within the rail and transit, road and highway, structures, water, freight, and intelligent transportation systems markets.

Secure Mission Solutions
Secure Mission Solutions provides end-to-end integrated security solutions in the electronic, information, communications, network, and cybersecurity domains.


First Support Services, Inc.
First Support Services provides facility operations and maintenance, logistics support, transportation support, and telecommunications operations to the US government.


CT MAIN Engenheiros
CT MAIN Engenheiros specializes in providing project management and technical services to the energy and infrastructure market in Brazil.

O’Connor Associates Environmental Inc.

O’Connor Associates Environmental provides site investigation and remediation.


SPARTA, Inc. (dba Cobham Analytic Solutions)
SPARTA provides advanced systems engineering, cybersecurity, and mission support services to the defense, intelligence, and homeland security sectors of the US government.


Vasey Aviation Group LLC

Vasey Aviation Group supplies program management, operations, strategy, and capital planning services to the aviation industry.


McMunn Associates, Inc. (MAI)
MAI specializes in providing analytical, technical, training, and management services and solutions to the US Intelligence Community.


3D/International (3D/I)
3D/I provides program management, condition assessment, design, construction, and information technology for the vertical facility environment.


RCI Construction Group (RCI)
RCI provides water and wastewater, transportation, urban infrastructure, civil and industrial construction, environmental site remediation, and residential and commercial development.

The Alaris Group LLC (Alaris)

Alaris provides wireless telecommunications site development services.

META Associates, Inc (META)
META specializes in program management, ranging from facility planning to design-build construction.


MWC (MW Consultants)
MWC provides engineering and construction for pharmaceuticals, biotechnology, and life sciences.

PFI (Process Facilities Inc.)
PFI specializes in program management and manufacturing for pharmaceuticals and life sciences.

Primus Infrastructure Inc.
Primus provides water, infrastructure, and program management for capital improvement projects.


H.E. Hennigh, Inc.
H.E. Hennigh provides telecommunications general contracting.

Finley McNary Engineers, Inc.
Finley McNary Engineers provides bridge engineering.


Protect Air, Inc.
Protect Air provides vehicle emissions inspection, compliance, and data management.


Gilbert/Commonwealth Inc. (Gilbert)
Gilbert provides power plant design and nuclear facility decommissioning.


Steinman Boynton Gronquist & Birdsall (Steinman, SBGB)
Steinman provides bridge design and engineering.


The C.T. Main Corporation
C.T. Main provides power and industrial engineering.

Harland Bartholomew and Associates (HBA)
HBA provides urban and military planning.

Barton-Aschman Associates (BAA)
BAA specializes in traffic planning.


Brian Watt & Associates, Inc.

Brian Watt & Associates provides petroleum drilling and construction.


Engineering Science, Inc. (ES, PES)
ES provides environmental consulting services.


Parsons Corporation
Holding company for RMP, DCC, and SIP.

Parsons Constructors, Inc. (PCI)
PCI provides construction services.


De Leuw, Cather & Company (DCC)
DCC provides transportation engineering, design, and construction.

SIP, Inc.
SIP specializes in petroleum and chemical design and engineering.


Barry and Richardson
Barry and Richardson provides sulfur recovery, mining, and petrochemical design.


Dillingham Engineering Party

Dillingham Engineering Party specializes in mining and petrochemical engineering design.


Vitro Engineering
Vitro Engineering provides nuclear fuel reprocessing.


Anaconda-Jurden Associates
Anaconda-Jurden provides the mining, engineering, and design/construction of metallurgy facilities.


E.A. Bender Drilling Company
E.A. Bender Drilling provides well drilling and exploration.


The Ralph M. Parsons Company (RMP)
RMP provides engineering, procurement, and construction services for government, petrochemical, and infrastructure clients.

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