• Analytical Chemist Mid Level

    Adecco US, Inc. (Chesterfield, MO)
    ** Analytical Chemist - Mid Level** ** Analytical Science Hub | Small Molecules Division** Adecco Healthcare & Life Sciences is partnered with a leading ... agricultural science organization to hire a **Mid-Level Analytical Chemist ** to support its **Small Molecules Analytical Science Hub** . This role focuses on… more
    Adecco US, Inc. (12/24/25)
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  • Analytical Chemist

    Belcan (Chesterfield, MO)
    Analytical Chemist Job Number: 361908 Category: Chemist Description: Job Title: Analytical Chemist - Mid Level Location: Chesterfield, MO Zip Code: ... and quantitative analyses. * Optimize and develop new sample preparation and analytical methods * Write reports and interpret/report analytical results to… more
    Belcan (12/23/25)
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  • Analytical Chemist

    Actalent (Chesterfield, MO)
    Job Title: Analytical Chemist - Mid Level Job Description We are seeking a passionate and skilled Analytical Chemist to join our Analytical Science ... quantitative analyses. + Respond promptly to collaborator/partner inquiries and analytical /data troubleshooting/reporting requests. + Write reports and interpret … more
    Actalent (12/19/25)
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  • Analytical Chemist (Organic)

    Nestle (St. Louis, MO)
    …towards being one of the most trusted companies in pet care. As an Analytical Chemist , you will execute and interpret complex procedures and protocols within ... Purely Driven. **Position Summary** Quality Assurance and Nestle Purina Analytical Laboratories department is comprised of talented individuals who possess… more
    Nestle (11/12/25)
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  • Analytical Development Chemist (R&D)

    Actalent (St. Louis, MO)
    Job Title: Application Chemist Job Description We are seeking a temporary full-time project lead to execute, coordinate, and document a defined portfolio of ... consistency across CAD platforms. Essential Skills + Strong understanding of analytical instrumentation including Raman, FTIR, NIR, UV-Vis spectroscopy, and process… more
    Actalent (12/20/25)
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  • Environmental Field Chemist CDL Driver

    Clean Harbors (St. Charles, MO)
    Clean Harbors in **St. Charles, MO** is seeking an **Environmental Field Chemist CDL Driver** (CleanPack Chemist ) to handle, segregate, pack, and inspect ... CDL with hazmat endorsement required** + **The Environmental Field Chemist are (NOT) laboratory-based Chemist ** + **Must...profile of new waste streams or any waste needing analytical testing + Ensures drum count is correct and… more
    Clean Harbors (11/21/25)
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  • Chemist

    Actalent (St. Louis, MO)
    Job Title: QC ChemistJob Description We are seeking a dedicated QC Chemist to join our contract testing team specializing in the analysis of gases and oils. As a QC ... Chemist , you will play a crucial role in assisting...Experience with ion chromatography, atomic absorption (AA), and other analytical techniques is advantageous. Work Environment The work environment… more
    Actalent (12/23/25)
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  • Environmental Chemist /Data Validator

    Leidos (Earth City, MO)
    **Description** Leidos is in search of an **Environmental Chemist /Data Validator** . This role will primarily provide support to the United States Army Corps of ... validation of laboratory data packages of radiological data received from analytical laboratories + Evaluate lab reports for completeness, assess quality control… more
    Leidos (12/03/25)
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  • Senior Chemist /Metrologist

    Kelly Services (St. Louis, MO)
    …troubleshooting, and diagnostic repair on a variety of complex ** analytical instrumentations** used in pharmaceutical laboratories, specifically including **HPLC, ... GC, and Spectrophotometers** . + **Component Management:** Analyze test results, specify, and request the purchase of necessary components for repairs or upgrades. + **Modification:** Adjust and modify instrument performance and circuitry to meet specific… more
    Kelly Services (11/01/25)
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