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GRSi's Overview

Total employees293
HeadquartersFrederick
Founded2000

GRSi is a prominent technology services company dedicated to providing innovative solutions and mission support to U.S. defense, intelligence, and federal civilian agencies. Honored multiple times by Inc. 5000 and as an ACG Growth Company of the Year, GRSi focuses on delivering next-generation technology services. Their expertise spans specialized cloud computing, cybersecurity, enterprise-level managed IT services, DevSecOps, and advancements in Artificial Intelligence (AI) and Machine Learning (ML). GRSi prides itself on being a reliable partner, driving technological progress and supporting critical national missions through a commitment to excellence and innovation.

Where is GRSi's Headquarters?

HQ Function

Serves as the central hub for corporate leadership, strategic planning, business development, and administrative operations, guiding GRSi's innovative technology services and mission solutions.

Notable Features:

State-of-the-art facility equipped with modern technology infrastructure to support GRSi's advanced technical services and foster a collaborative work environment.

Work Culture:

GRSi promotes a dynamic and employee-centric work culture focused on innovation, continuous learning, and mission success. They emphasize teamwork, professional growth, and a commitment to supporting their clients and employees.

HQ Significance:

The Frederick, MD headquarters is strategically positioned to serve key federal government clients in the Washington D.C. metropolitan area and provides access to a rich talent pool in technology and engineering.

Values Reflected in HQ: The modern and collaborative headquarters reflects GRSi's commitment to innovation, teamwork, and providing an exceptional environment for its employees to support critical client missions.

Location:

GRSi primarily operates within the United States, providing technology services and mission solutions to U.S. federal defense, intelligence, and civilian agencies. While their direct office presence is U.S.-based, their support for federal missions may have a global reach depending on client requirements.

Street Address:

9085 Michaels Ct

City:

Frederick

State/Province:

MD

Country:

USA

GRSi's Global Presence

Chantilly, Virginia/USA

Address: 14280 Park Meadow Drive, Suite 100, Chantilly, VA 20151

Proximity to numerous federal agencies, technology partners, and a skilled workforce in the National Capital Region.

Aberdeen, Maryland/USA

Address: 6240 Guardian Gateway, Suite 101, Aberdeen Proving Ground, MD 21005

Embedded support within a major U.S. Army research and development center, facilitating close collaboration on critical defense projects.

Huntsville, Alabama/USA

Address: 300 Voyager Way NW, Suite 120, Huntsville, AL 35806

Strategic location in a major hub for NASA, U.S. Army Aviation and Missile Command, and aerospace/defense contractors.

San Antonio, Texas/USA

Address: 1777 NE Loop 410, Suite 600, San Antonio, TX 78217

Access to a large military and cybersecurity talent pool and proximity to key Air Force and joint cyber operations commands.

Dayton, Ohio/USA

Address: 4031 Colonel Glenn Highway, Beavercreek, OH 45431

Located near Wright-Patterson AFB, a critical center for Air Force logistics, research, and development.

Buying Intent Signals for GRSi

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Executive Team of GRSi

As of April 2025, GRSi' leadership includes:

David R. Affeldt - President & CEO
Kelly Pleas - Executive Vice President & Chief Operating Officer
JoAnne Gaughan - Executive Vice President & Chief Financial Officer

Investors of GRSi

GRSi has been backed by several prominent investors over the years, including:

Privately Held

Executive New Hires/Exits in the Last 12 Months

Hire3
Exits0

GRSi has actively strengthened its executive team over the past year with key strategic hires, particularly enhancing its capabilities in defense programs, technology innovation, and human resources. No major executive departures have been publicly announced in the last 12 months.

New Appointments:

Hart Guenther, Hart Guenther appointed as SVP, Defense Programs & National Security, bringing extensive experience to lead this critical sector for GRSi.
Philip Rideout, Philip Rideout joined GRSi as SVP of Technology & Innovation to drive technological advancements and innovative solutions.
Rachael Peritone, Rachael Peritone appointed as SVP of HR & Talent Acquisition to lead GRSi's human capital strategy and talent development.

Technology (Tech Stack) used by GRSi

Discover the tools GRSi uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

GRSi Email Formats and Examples

GRSi likely utilizes common corporate email formats. The most probable format is [first_initial][last]@grsi.com or [first].[last]@grsi.com.

[first_initial][last]@grsi.com

Format

jsmith@grsi.com

Example

85%

Success rate

News and media

grsi.com (Press Release)May 22, 2024

GRSi Honored as ACG National Capital Corporate Growth Award Winner for Second Consecutive Year

GRSi announced it has been named a 2024 ACG National Capital Corporate Growth Award winner in the '$75M - $250M Revenue' category, marking its second consecutive win. This award recognizes significant growth and performance....more

grsi.com (Press Release)January 10, 2024

GRSi Awarded $49M Naval Information Warfare Center Atlantic Cloud Migration and Modernization Task Order

GRSi secured a $49 million task order to provide cloud migration, modernization, and O&M support for the U.S. Marine Corps and other DoD entities under NIWC Atlantic....more

grsi.com (Press Release)October 10, 2023

GRSi Welcomes Rachael Peritone as SVP of HR & Talent Acquisition

GRSi announced the appointment of Rachael Peritone as Senior Vice President of Human Resources & Talent Acquisition, responsible for leading HR strategy and talent initiatives....more

grsi.com (Press Release)September 12, 2023

GRSi Welcomes Philip Rideout as SVP of Technology & Innovation

GRSi announced that Philip Rideout has joined the company as Senior Vice President of Technology & Innovation to spearhead technology strategy and drive innovation....more

grsi.com (Press Release)July 11, 2023

GRSi Names Hart Guenther Senior Vice President of Defense Programs and National Security

GRSi appointed Hart Guenther as SVP of Defense Programs and National Security to lead and expand the company's support for defense and national security clients....more

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