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Department of Defense (DoD): NAICS 541690 — Other Scientific and Technical Consulting Services

1open solicitations
$184.8Mobligated in FY2026
198contracts ending within 18 months

Open solicitations

How DoD NAICS 541690 spends

FY2021$736.1M
FY2022$698.2M
FY2023$278.2M
FY2024$393.8M
FY2025$462.5M
FY2026$184.8M
Contract obligations by federal fiscal year (October–September), from USASpending.gov award data. IDIQ ceilings are excluded. * The current year is partial, and USASpending lags 4–8 weeks.

DoD NAICS 541690 contracts expiring in the next 18 months

198 contracts worth $1.1B.

IncumbentBuyerWhatValueEndsEst. solicitationRecord
VERNADERO GROUP INCNavy541690 Other Scientific and Technical Consulting Services$55K09 October 2026Now / imminentUSASpending
METRON INCORPORATEDDefense Advanced Research Projects Agency541690 Other Scientific and Technical Consulting Services$315K16 October 2026Now / imminentUSASpending
MERKEL & ASSOCIATES, INC.Navy541690 Other Scientific and Technical Consulting Services$53K17 October 2026Now / imminentUSASpending
SOL ENGINEERING SERVICES, LLCArmy541690 Other Scientific and Technical Consulting Services$250K22 October 2026Now / imminentUSASpending
PATRIOT JOINT VENTURENavy541690 Other Scientific and Technical Consulting Services$196K22 October 2026Now / imminentUSASpending
ARSERVICES, LIMITEDDefense Threat Reduction Agency541690 Other Scientific and Technical Consulting Services$513K24 October 2026Now / imminentUSASpending
TIERRA DATA INCNavy541690 Other Scientific and Technical Consulting Services$58K26 October 2026Now / imminentUSASpending
OHIO VALLEY ARCHAEOLOGY, INC.Navy541690 Other Scientific and Technical Consulting Services$91K30 October 2026Now / imminentUSASpending
V2X AEROSPACE LLCAir Force541690 Other Scientific and Technical Consulting Services$17.6M (2 orders)31 October 2026Now / imminentUSASpending
MAXMED SARATOGA JV LLCArmy541690 Other Scientific and Technical Consulting Services$12.0M31 October 2026Now / imminentUSASpending
RIVERSIDE RESEARCH INSTITUTEAir Force541690 Other Scientific and Technical Consulting Services$11.6M31 October 2026Now / imminentUSASpending
APEX ENVIRONMENTAL MANAGEMENT, INC.Army541690 Other Scientific and Technical Consulting Services$144K31 October 2026Now / imminentUSASpending
JH1 CONSULTANTS, LLCArmy541690 Other Scientific and Technical Consulting Services$105K31 October 2026Now / imminentUSASpending
KAKO'O SERVICES LLCAir Force541690 Other Scientific and Technical Consulting Services$670K13 November 2026Now / imminentUSASpending
ACS HABITAT MANAGEMENT, INC.Navy541690 Other Scientific and Technical Consulting Services$535K (2 orders)16 November 2026Now / imminentUSASpending

Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.

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