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ON ASSIGNMENT, INC.

Parent13 subsidiariesUEI: MS5YBJZS9Y46

ON ASSIGNMENT, INC. is a federal contractor, registered under UEI MS5YBJZS9Y46. It has been awarded $2,079,107 across 2,177 federal contracts. Primary work spans Temporary Help Services, Unknown NAICS, and Offices of All Other Miscellaneous Health Practitioners. Top awarding agencies include Department Of Health And Human Services, Department Of Veterans Affairs, and Department Of Health And Human Services (hhs).

Contact Information

Registration and classification details

Registration

UEI Code

MS5YBJZS9Y46

Subsidiaries

13 companies roll up into ON ASSIGNMENT, INC., sized by each one's own awards

Award distribution

$3.0B

Top 8 hold 99%

Inforeliance LLC$1.0B Enterprise Resource Performance, LLC$563.4M SPC Federal, LLC$488.1M DHA Group, INC.$358.2M KSH Solutions INC.$279.1M I_SW, LLC$178.5M Ilumina Solutions Incorporated$109.4M 5 others$25.6M Integrated Solutions Management, INC.$25.2M

1Inforeliance LLCUEI UEYLW3YCLYW5$1.0B33.2%2Enterprise Resource Performance, LLCUEI N5FAKJH4DHA4$563.4M18.6%3SPC Federal, LLCUEI FYA5SP1LGS36$488.1M16.1%4DHA Group, INC.UEI EE7WGKL1XUM1$358.2M11.8%5KSH Solutions INC.UEI C7ZDJNJHNMC4$279.1M9.2%6I_SW, LLCUEI F4JFAJJM2E21$178.5M5.9%7Ilumina Solutions IncorporatedUEI UL4ALY6SAHU3$109.4M3.6%8Integrated Solutions Management, INC.UEI CMCFECBGEVE3$25.2M0.8%

Show 5 more

9DHA Engineering Solutions LLCUEI M498V4TU26K5$13.9M0.5%10Mystikal Solutions, LLCUEI HQ5QM7UDP214$7.7M0.3%11Whitaker Medical, LLCUEI NKKCP62N1ZU3$2.2M0.1%

12Tridata CorporationUEI PZDLM3G5JZ64$1.2M0.0%13APEX Life Sciences, LLCUEI LZYFGL1NSHT8$494.5K0.0%

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Open opportunities in ON ASSIGNMENT, INC.'s top NAICS codes and agencies

Heavy Equipment - Trained & Qualified Operators.

Solicitation # WMATA-0000010862

The Washington Metropolitan Area Transit Authority is seeking solicitations for the provision of trained and qualified heavy equipment operators under solicitation number WMATA-0000010862. This requirement falls under NAICS code 561320, focusing on the procurement of skilled personnel capable of operating heavy machinery to support agency operations. The solicitation was posted on October 3, 2026, with a strict response deadline of October 7, 2026. Interested parties must submit their responses through the official supplier portal by the specified cutoff time to be considered for the contract.

Washington Metropolitan Area Transit Authority

POSTED

about 6 hours ago

DEADLINE

Aquatic Habitat and Water Quality Improvement Projects

Purchasing Public Utility

POSTED

about 10 hours ago

DEADLINE

in about 1 month

Sustainability & Stewardship Consultant

POSTED

about 14 hours ago

DEADLINE

in about 1 month

Radon Analysis and Environmental ConsultingThis subcontract for Radon Analysis and Environmental Consulting involves providing professional consulting services for the Upper Canada District School Board. The selected provider will analyze radon test data from 18 different school sites to develop detailed reports and offer mitigation recommendations that align with public educational facility health standards. The scope of work requires the use of specialized data analysis software to produce professional deliverables, culminating in the submission of final Radon Analysis Reports for all 18 locations. This project falls under NAICS code 541620 and is designed to support prime contractors in ensuring the safety and environmental compliance of school board facilities.

Upper Canada District School Board

POSTED

about 16 hours ago

DEADLINE

Radon Testing and Field Data CollectionThis subcontract for Radon Testing and Field Data Collection involves the deployment and retrieval of radon detection devices across 18 school sites for the Upper Canada District School Board. The selected provider will work under prime contractors to conduct field measurements using specialized equipment in accordance with professional environmental standards. The project requires qualified and skilled personnel to ensure the accurate collection of raw field data and the delivery of confirmed testing results for all designated locations. Interested parties must submit their responses by October 23, 2026.

Upper Canada District School Board

POSTED

about 16 hours ago

DEADLINE

Radon Testing & Consulting – Phase 4

Solicitation # 26-113

The Upper Canada District School Board is soliciting proposals for Radon Testing and Consulting Services Phase 4 under solicitation number 26-113. The selected proponent will be responsible for providing and installing radon gas detector devices, specifically Alpha track Detectors, across 18 schools and sites. All services must be performed in accordance with Health Canada’s Guide for Radon Measurements In Public Buildings and follow Canadian National Radon Proficiency Program sampling protocols. The scope requires long-term measurements lasting three to four months during the heating season, with the consultant tracking all sensor locations and processing the resulting data into a comprehensive report. The contract is expected to be executed on November 2, 2026, and will remain in effect until all deliverables are completed. To be eligible, the proponent's project lead must be C-NRPP certified, and the firm must submit a signed US Business Verification Form. Award decisions will be based on a combination of pricing and non-price rated criteria, including experience, qualifications, capabilities, and the quality of a provided sample report. Proponents must achieve a minimum consensus score of 65 percent on non-financial criteria to be considered. Pricing must be submitted as an all-inclusive lump sum via the board's electronic bidding portal by the deadline of October 23, 2026.

Upper Canada District School Board

POSTED

about 16 hours ago

DEADLINE

Environmental Engineering and NPDES ComplianceThis subcontract for Environmental Engineering and NPDES Compliance supports prime contractors on community development projects for the City of Mcrae-Helena. The selected provider will be responsible for preparing NPDES permits and Stormwater Pollution Prevention Plans, conducting environmental impact assessments for CDBG and EDA funded projects, and coordinating directly with the Georgia Department of Community Affairs. Technical requirements include the use of GIS mapping software and environmental sampling equipment. To qualify, the contractor must hold NPDES certification and possess a thorough understanding of 2 CFR 200 regulations. Key deliverables include the submission of necessary permits and detailed compliance reports. The solicitation was posted on October 2, 2026, with a response deadline of November 5, 2026.

City of Mcrae-helena

POSTED

about 16 hours ago

DEADLINE

in about 1 month

Federal Grant Writing & Application ServicesThe City of McRae-Helena in Georgia is seeking a subcontractor to provide professional federal grant writing and application services for community and economic development projects. The selected provider will be responsible for identifying federal funding opportunities, specifically focusing on CDBG, RDF, and EIP grants, as well as performing the necessary research, drafting, and submission of technical proposals. Key deliverables include the development of comprehensive project justifications and detailed budget narratives. Qualified candidates must demonstrate proven experience working with HUD and EDA grant formats to ensure all submissions meet strict federal requirements. This opportunity was posted on October 2, 2026, with a response deadline of November 5, 2026. The contract falls under NAICS code 541990 and is intended to support prime contractors in securing essential funding for local development initiatives.

City of Mcrae-helena

POSTED

about 16 hours ago

DEADLINE

in about 1 month

Language Access & User Adoption Services

300 - Department of Education

POSTED

about 17 hours ago

DEADLINE

NEPA Documentation and Environmental AnalysisThis subcontract for NEPA Documentation and Environmental Analysis involves providing technical writing and environmental analysis services for prime contractors working on USDA Forest Service projects. The selected provider will be responsible for analyzing survey data and project design criteria to produce focused Environmental Assessments in accordance with 7 CFR 1b, as well as Biological Assessments for ESA-listed species and Biological Evaluations for sensitive species. The project is based in Salem, Oregon, and falls under NAICS code 541620. Interested parties must submit their responses by November 2, 2026, to support the delivery of completed environmental documentation.

Procurement Only

POSTED

about 18 hours ago

DEADLINE

in about 1 month

Avian Survey Services (Northern Spotted Owl)This subcontract for Avian Survey Services focuses on the collection and summarization of field data for the Northern Spotted Owl to support prime contractors on USDA Forest Service projects. The selected provider will be responsible for conducting surveys in accordance with specific NSO protocols and delivering the resulting data and summaries. The project is based in Salem, Oregon, and falls under NAICS code 541620. Interested parties must submit their responses by November 2, 2026, following the solicitation posted on October 2, 2026.

Procurement Only

POSTED

about 18 hours ago

DEADLINE

in about 1 month

Terrestrial Mollusk Survey ServicesThis subcontract for Terrestrial Mollusk Survey Services involves performing field surveys to collect and summarize terrestrial mollusk data for prime contractors working on USDA Forest Service projects. The selected provider will be responsible for gathering field survey data in accordance with established biological protocols within the designated project area and delivering comprehensive field data reports. The project is based in Salem, Oregon, and falls under NAICS code 541620. Interested parties must submit their responses by the deadline of November 2, 2026.

Procurement Only

POSTED

about 18 hours ago

DEADLINE

in about 1 month

Fungal Survey and Analysis ServicesThis subcontract for Fungal Survey and Analysis Services involves performing biological field surveys on 986 acres of dry mixed conifer forest within the Mt. Hood National Forest. Working for prime contractors on USDA Forest Service projects, the selected provider will follow the Survey and Manage Category B Fungi Equivalent-Effort Survey Protocol. The scope of work includes using GPS and GIS software to track routes and identify fungi, as well as the collection and preservation of voucher specimens. The contractor is responsible for delivering seasonal summary reports, GIS location files, and confirmed voucher specimens. This opportunity is categorized under NAICS code 541620 and is associated with the state of Oregon, with the place of performance located in Salem. The response deadline for this requirement is November 2, 2026.

Procurement Only

POSTED

about 18 hours ago

DEADLINE

in about 1 month

The Dalles Watershed Project GNA 2026

Solicitation # S-62900-00018091

Solicitation S-62900-00018091 is a request for proposals issued by the Oregon Department of Forestry for the Dalles Watershed Project GNA 2026. The project is a high-priority landscape-scale restoration effort for wildfire risk reduction located on the Barlow Ranger District of the Mt. Hood National Forest. The selected contractor will provide data collection, analysis, and documentation services to ensure compliance with the National Environmental Policy Act and other federal laws, with primary deliverables including an Environmental Assessment and a Finding of No Significant Impact. The anticipated initial contract term is two years, with all work required to be completed by June 30, 2028. The scope of work includes specialized tasks such as Survey and Manage fungal and terrestrial mollusk field data collection, requiring strict adherence to Region 6 guidelines for specimen packaging, archival labeling, and shipping. Technical requirements specify that final GIS data must use the Forest Service Region 6 NAD 1983 coordinate system and include comprehensive quality control documentation. Proposals will be evaluated using a weighted point system covering price, management plan, references, experience, key personnel, and qualifications. Submissions must be made electronically via OregonBuys by November 2, 2026, at 2:00 PM PST, with the price proposal submitted as a separate file.

Procurement Only

POSTED

about 18 hours ago

DEADLINE

in about 1 month

Energy Modeling & Commissioning SpecialistThe Energy Modeling and Commissioning Specialist subcontract involves providing independent verification of energy models and commissioning energy-saving systems for prime contractors working on Cherokee County School District 1 facility projects in South Carolina. The selected specialist will utilize data loggers and energy modeling software to validate actual performance against projected savings, ultimately delivering comprehensive commissioning and energy savings verification reports. Qualified candidates must hold a Certified Energy Manager (CEM) or Certified Commissioning Professional (CCP) certification. This opportunity is categorized under NAICS code 541620, with a response deadline set for October 26, 2026.

Cherokee County School District 1

POSTED

about 18 hours ago

DEADLINE

Site Supervision of Asbestos RemovalThis subcontract involves providing independent site supervision and analytical oversight for asbestos removal projects managed by Wrexham County Borough Council. The selected provider will be responsible for ensuring that prime contractors comply with safety standards and performing the necessary analytical work to verify that asbestos has been effectively removed. A critical requirement for this role is a deep expert knowledge of CAR2012 and maintaining strict independence from the removal contractors to ensure unbiased oversight. The successful contractor will be expected to deliver detailed supervision logs and analytical verification reports as part of their deliverables. Interested parties must submit their responses by November 13, 2026. This opportunity falls under NAICS code 541620 and is focused on maintaining environmental safety and regulatory compliance across council projects.

Wrexham County Borough Council

POSTED

about 19 hours ago

DEADLINE

in about 1 month

Asbestos Air Testing and MonitoringThis subcontract for Asbestos Air Testing and Monitoring involves providing specialized air quality testing services for prime contractors operating on Wrexham County Borough Council projects. The scope of work includes conducting analytical work and reassurance air testing through the use of monitoring equipment and air sampling pumps to ensure environmental safety. The selected provider must adhere strictly to CAR2012 and all applicable health and safety air monitoring standards. Key deliverables for the contract include the provision of detailed air testing results and the issuance of formal clearance and reassurance reports. The response deadline for this opportunity is November 13, 2026.

Wrexham County Borough Council

POSTED

about 19 hours ago

DEADLINE

in about 1 month

Asbestos Bulk Sample AnalysisThis subcontract involves providing specialized laboratory testing and analysis of asbestos-containing materials for prime contractors working on Wrexham County Borough Council projects. The selected provider will be responsible for receiving bulk samples collected from site surveys and utilizing accredited laboratory facilities to identify the specific type and concentration of asbestos present. A mandatory requirement for this contract is UKAS accreditation to ensure all testing meets national standards. The primary deliverable is the provision of certified analytical test reports for all processed bulk samples. Interested parties must submit their responses by the deadline of November 13, 2026.

Wrexham County Borough Council

POSTED

about 19 hours ago

DEADLINE

in about 1 month