Department of the Interior NAICS 541618 and PSC R431 contractors

Other Management Consulting Services. SUPPORT- PROFESSIONAL: HUMAN RESOURCES. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of the Interior.

Department of the Interior · NAICS 541618 · PSC R431

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$335,667,985

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541618 and PSC R431

Calibre Systems INC

Alexandria, VA

Calibre Systems INC is a federal category business profile based in Alexandria, VA. The current public data layer shows $70,878,330 in visible federal obligations across 125 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541990 (All Other Professional, Scientific, and Technical Services). The profile also shows meaningful product and service activity in PSC R499.

$335,667,985