General Services Administration PSC R499 contractors

SUPPORT- PROFESSIONAL: OTHER. Contractors in this PSC lane under General Services Administration.

Agency: General Services Administration

Last updated: April 17, 2026

Visible recipients

212

Mapped obligations

$89,233,855,234

Visible recipients tied to General Services Administration and PSC R499

Constellation Newenergy, Inc.

Baltimore, MD

Baltimore, MD | 265 awards | Top agency General Services Administration | NAICS 541330

$119,806,537

Siemens Government Technologies INC

Arlington, VA

Arlington, VA | 227 awards | Top agency Department of Defense | NAICS 541512

$125,097,666

Src INC

Syracuse, NY

Syracuse, NY | 271 awards | Top agency Department of Defense | NAICS 334511

$376,895,359

Maveris LLC

Mclean, VA

Mclean, VA | 26 awards | Top agency Department of Veterans Affairs | NAICS 541511

$163,138,858

Credence Dynamo Solutions LLC

Vienna, VA

Vienna, VA | 102 awards | Top agency Department of Defense | NAICS 541330

$101,119,028

Health Services Advisory Group, Inc.

Phoenix, AZ

Phoenix, AZ | 30 awards | Top agency Department of Health and Human Services | NAICS 541618

$253,811,161

Jacobs Engineering Group Inc.

Arlington, VA

Arlington, VA | 308 awards | Top agency Department of Defense | NAICS 541330

$120,609,704

Planned Systems International INC

Columbia, MD

Columbia, MD | 64 awards | Top agency Department of Defense | NAICS 541519

$268,239,187

Tatitlek Technologies, LLC

Anchorage, AK

Anchorage, AK | 238 awards | Top agency Department of State | NAICS 561210

$177,906,851

Mantech Enterprise Management, Inc.

Fairfax, VA

Fairfax, VA | 5 awards | Top agency Department of Defense | NAICS 541712

$4,330,137

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