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NAICS Code· 541990

NAICS 541990: All Other Professional, Scientific, and Technical Services

This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research and development services; advertising, public relations, and related services; market research and public opinion polling; photographic services; translation and interpretation services; and veterinary services). Illustrative Examples: Appraisal (except real estate) services Marine surveyor (i.e., appraiser) services Arbitration and conciliation services (except by lawyer, attorney, or paralegal offices) Patent broker services (i.e., patent marketing services) Commodity inspector services Pipeline or power line inspection (i.e., visual) services Consumer credit counseling services Weather forecasting services Handwriting analysis services Cross-References. Establishments primarily engaged in--Show more

NAICS 541990 — All Other Professional, Scientific, and Technical Services — captures a broad spectrum of specialized, non-classified professional services that support federal mission objectives but fall outside more defined NAICS categories. This includes strategic consulting, operational analysis, human capital development, technical advisory services, niche scientific research, security program design, and customized program management support.

272
Active Contracts
$5.4B
Total Obligations (12mo)
4.1K
Awarded Contracts (12mo)
1.8K
Contractors Awarded (12mo)
1
Median Bidders per Award
-36.8%
YoY Growth
Dotted
NAICS 541990 FAQ

Frequently Asked Questions

NAICS code 541990 covers All Other Professional, Scientific, and Technical Services. This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research and development services; advertising, public relations, and related services; market research and public opinion polling; photographic services; translation and interpretation services; and veterinary services). Illustrative Examples: Appraisal (except real estate) services Marine surveyor (i.e., appraiser) services Arbitration and conciliation services (except by lawyer, attorney, or paralegal offices) Patent broker services (i.e., patent marketing services) Commodity inspector services Pipeline or power line inspection (i.e., visual) services Consumer credit counseling services Weather forecasting services Handwriting analysis services Cross-References. Establishments primarily engaged in--

Recently Posted in All Other Professional, Scientific, and Technical Services

NAICS: 541990
New
DIBBS
MIL-SPEC Packaging and Marking ServicesThis subcontract for MIL-SPEC Packaging and Marking Services involves providing specialized military-grade packaging and marking for prime contractors delivering hardware to Department of Defense facilities. The scope of work requires strict adherence to MIL-STD-2073-1E for packaging and MIL-STD-129 for marking, utilizing standardized military labeling equipment and moisture barrier materials. The contractor is responsible for preparing all shipments to meet First Destination Transportation program requirements, ensuring they are fully ready for transport. Managed by the DLA Weapons Support ASC Supplier Oper OEM Division, the performance of this contract will take place in Tracy, California. The opportunity was posted on October 18, 2026, with a response deadline of October 26, 2026. The project falls under NAICS code 541990 and focuses on the delivery of packaged and marked shipments that meet rigorous military specifications.
DLA WEAPONS SUPPORT ASC SUPPLIER OPER OEM DIVISION

POSTED

about 22 hours ago

DEADLINE

in 7 days
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NAICS: 541990
New
DIBBS
MIL-SPEC Waterproof/Opaque Packaging ServicesThis subcontract involves providing specialized sealing and marking services for gasket kits intended for prime contractors fulfilling DLA supply contracts. The scope of work requires sealing items in medium duty, waterproof, greaseproof, and opaque bags in accordance with MIL-DTL-117, Type II, Class C, Style 1. Additionally, the contractor must apply markings following MIL-STD-129 and MIL-STD-130N standards, utilizing Preservation Method 33 as specified in MIL-STD-2073-1E. The project entails the processing and delivery of 117 kits to Tracy, California. This requirement is issued by the Department of Defense under the DLA Weapons Support Land Supplier Operations Vehicle Support agency. Interested parties should note the response deadline of October 29, 2026, for this specialized packaging service categorized under NAICS code 541990.
DLA WEAPONS SUPPORT LAND SUPPLIER OPNS VEHICLE SPT

POSTED

about 22 hours ago

DEADLINE

in 10 days
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NAICS: 541990
New
International
Fireworks Display Execution and ManagementThe Fireworks Display Execution and Management subcontract for the Town of Whitchurch-Stouffville involves the end-to-end setup, ignition, and cleanup of professional fireworks displays for special events. The selected provider will work under prime contractors to coordinate display layouts, install professional-grade shells and ignition systems, and execute displays according to detailed itineraries. A primary focus of the role is the strict implementation of Safety and Risk Management Plans to ensure the delivery of safe and successful public displays. To qualify for this contract, providers must hold valid pyrotechnic certifications and a WSIB certificate, while maintaining full compliance with Ontario Regulation 429/07. Interested parties must submit their responses by November 6, 2026, at 8:00 PM. This opportunity is categorized under NAICS code 541990 and is managed directly by the Town of Whitchurch-Stouffville.
Town of Whitchurch-Stouffville

POSTED

3 days ago

DEADLINE

in 18 days
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NAICS: 541990
New
International
Sign and Demolition Permit ConsultantThe City of Yellowknife is seeking a Sign and Demolition Permit Consultant to manage the review and processing of permits for prime contractors on building services projects. The selected consultant will be responsible for conducting plan reviews for sign permits and evaluating demolition permits to ensure full safety and regulatory compliance with local zoning bylaws. Additionally, the role involves leading informational sessions with inspectors to align permit processes and inspection protocols. Qualified candidates must hold credentials as a Planning Consultant or a Qualified Building Official. The primary deliverable of this subcontract is the provision of approved and reviewed sign and demolition permits. Interested parties must submit their responses by November 13, 2026.
City of Yellowknife

POSTED

3 days ago

DEADLINE

in 25 days
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NAICS: 541990
New
International
Part 9 Building Code ConsultantThe City of Yellowknife is seeking a Part 9 Building Code Consultant for a subcontract to perform plan reviews and compliance checks for prime contractors on building services projects. The scope of work focuses on single-family homes and small commercial buildings, requiring the consultant to provide written feedback on code compliance and assist inspectors with the remediation of violations for small-scale projects. Qualified candidates must hold a Certified Building Official designation or a qualified building inspector certification. The primary deliverable consists of written plan review reports for Part 9 projects. This opportunity was posted on October 16, 2026, with a response deadline of November 13, 2026.
City of Yellowknife

POSTED

3 days ago

DEADLINE

in 25 days
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NAICS: 541990
New
International
Planning Services Support
Solicitation # 26-090
The City of Yellowknife is soliciting proposals under solicitation number 26-090 for professional planning services and administrative support. The primary objective is to secure a qualified firm to assist the Planning team with processing Zoning By-law Amendments and Development Permits, as well as providing general land use planning support for commercial, industrial, and residential projects. The selected consultant will be responsible for conducting application reviews, coordinating planning processes, and ensuring all projects comply with the Cities, Towns and Villages Act, the Community Planning and Development Act of the Northwest Territories, and the City's Community Plan and Zoning By-law No. 5045. This is a time-fee basis contract governed by the laws of the Northwest Territories. Proposals must be submitted electronically via the Bids and Tenders system by November 13, 2026, at 3:00 pm local time. Evaluation is based on a weighted scoring system considering the proponent's technical proposal, company profile, and the benefit provided to the local Yellowknife economy. Key contractual requirements include maintaining general commercial liability insurance of at least 2,000,000 USD and providing invoices in US Dollars. The City reserves the right to suspend services at any time and requires a detailed quality control and client service approach as part of the submission.
City of Yellowknife

POSTED

3 days ago

DEADLINE

in 25 days
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NAICS: 541990
New
SLED
Educational Data Analysis and ReportingThe Educational Data Analysis and Reporting subcontract involves providing specialized data collection and analysis services for prime contractors working on Alabama Department of Workforce projects. The primary scope of work includes gathering enrollment data and utilizing GIS or other mapping tools to perform geographic mapping of funded schools. A critical requirement of the engagement is strict adherence to all applicable student data privacy laws. The final deliverable for this contract is a comprehensive report intended for the Alabama Legislative Regular Session. This opportunity is categorized under NAICS code 541990 and was posted on October 16, 2026, with a response deadline of November 9, 2026.
STEM

POSTED

3 days ago

DEADLINE

in 21 days
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NAICS: 541990
New
SLED
Pyrotechnic Design and Execution ServicesThis subcontract for Pyrotechnic Design and Execution Services involves providing professional-grade aerial fireworks displays for municipal event projects managed by the City of St. Petersburg Parks and Recreation department. The scope of work includes the custom design, choreography, setup, and discharge of displays at waterfront venues, as well as the installation of mortars, racks, and electronic firing systems and the completion of post-event cleanup. To qualify for this contract, pyrotechnicians must possess a minimum of five years of experience and hold a valid ATF 54 license. Interested parties must submit their responses by December 1, 2026, to deliver a fully executed aerial fireworks display under NAICS code 541990.
Parks and Recreation

POSTED

3 days ago

DEADLINE

in about 1 month
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NAICS: 541990
New
SLED
Hard-to-Reach Population Data Collection ServicesThis subcontract for Hard-to-Reach Population Data Collection Services supports the Multnomah County Homeless Services Department by providing specialized field-level data collection. The selected provider will be responsible for locating and surveying unsheltered and hard-to-reach populations, utilizing trauma-informed interviewing techniques to ensure ethical and effective engagement. The scope of work focuses on implementing rigorous data collection methodologies to maintain high quality and integrity across diverse field environments, ultimately delivering raw survey data and completed count records to prime contractors. The opportunity is categorized under NAICS code 541990 and is managed by Multnomah County in Oregon. Interested parties must adhere to the established timeline, with the solicitation posted on October 16, 2026, and a response deadline set for November 7, 2026. Detailed information and submission portals are available through the designated SciQuest bidding platform.
Multnomah County

POSTED

3 days ago

DEADLINE

in 18 days
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NAICS: 541990
New
Federal
Explosive Characterization and Technical Service Support
Solicitation # W912HZ27Z1CRT
The U.S. Army Corps of Engineers Research and Development Center, Geotechnical and Structures Laboratory, intends to award a sole source Master Blanket Purchase Agreement to UTEC Corporation, LLC for comprehensive research and technical support regarding the binary blasting agent DBA-105P. This five year agreement covers all labor, equipment, and travel necessary for readiness operations, direct operations support, material characterization, and general technical research and development. The government has identified UTEC Corporation, LLC as the only source capable of meeting these requirements without incurring unacceptable safety risks, duplicative costs, or catastrophic operational delays. Classified under NAICS code 541990, this action is intended to streamline the procurement of services to prevent disruptions to research and demonstration events. While the government intends to proceed on a sole source basis, responsible sources may submit capability statements and evidence of similar past experience for consideration. All relevant submissions must be sent to the designated points of contact by 1:00 PM CST on October 22, 2026, to be considered for a determination on whether to conduct a competitive procurement.
W2R2 USA Engr R & D Ctr

POSTED

3 days ago

DEADLINE

in 3 days
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NAICS: 541990
New
Federal
711th HPW Mission Support Services MAC IDIQ
Solicitation # FA239626RB008
The 711th Human Performance Wing (HPW) Mission Support Services Multiple Award Contract (MAC) is an 8(a) set-aside Indefinite Delivery Indefinite Quantity (IDIQ) vehicle issued by the Air Force Research Laboratory (AFRL). The contract has an estimated maximum dollar value of $505,000,000.00 with a five-year ordering period and a six-year period of performance. The scope of work involves providing comprehensive mission support services, including personal and non-personal medical clinical support, certified laboratory services, and general management support across various locations, including Wright Patterson AFB and the Naval Medical Research Unit-Dayton. The government utilizes a threshold-based source selection process where awards are made to all responsible offerors who achieve a minimum validated score of 1,740 points on a technical capability self-scoring worksheet. Price is not evaluated at the IDIQ level; however, the government establishes binding ceilings on Other Direct Costs (ODC) burden and handling rates. Security requirements are stringent, with various task orders requiring Secret or Top Secret clearances and compliance with SCI and NISPOM standards. Following the basic IDIQ award, specific requirements will be competed via Fair Opportunity Proposal Requests (FOPRs) evaluated on technical, price, and past performance criteria. The final proposal submission deadline has been extended to October 30, 2026.
FA2396 USAF Afmc Afrl Pzl Afrl Pzle

POSTED

3 days ago

DEADLINE

in 11 days
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NAICS: 541990
New
SLED
Field Interviewer ServicesThis subcontract for Field Interviewer Services supports the HCPF Executive Director's Office in Colorado by providing face-to-face and remote survey administration. The selected contractor will conduct interviews at residences, community locations, and caregiving facilities utilizing NCI-AD, NCI-IDD, and CWSS protocols. All data must be entered into the Department system using provided tablets, laptops, and HIPAA-compliant software. To ensure compliance and quality, personnel must undergo HCPF training in person-centered language and data security, and must pass a clean criminal background check. The contract falls under NAICS code 541990, with a response deadline of October 23, 2026.
HCPF - Executive Director's Office

POSTED

3 days ago

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in 4 days
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