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Scientist I - ADME Tox

Eurofins
Saint Charles, MO, United States
Posted October 30, 2026
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Are you looking to grow your experience in the ADME-Tox space? Look no further! Come join our dynamic and growing team for a great opportunity. The Scientist I will support the Eurofins Discovery business in contract research services. This role requires applied experience and proven knowledge in analytical chemistry method development and analysis, with related experience in a contract research organization (CRO) or industry laboratory.

Here's what you'll do:

• Perform work in a laboratory setting and meets the physical job requirements of a lab role.

• Provide leadership and mentorship for junior scientists, and lab leadership through daily lab management, equipment management and lab planning.

• Perform work in a laboratory setting, meeting the physical job requirements of a lab role.

• Develop Liquid Chromatography- Mass Spectrometry (LC-MS) methods for ADME/ DMPK and BioAnalysis applications

• Develop analytical methods supporting project teams both internally and externally for new assay development.

• Perform Troubleshooting and Maintenance of Mass Spectrometers and HPLC units.

• Experience with Sciex® or Thermo High Resolution/ Accurate Mass Instrumentation is a plus.

• Prepare and manages inventory of buffers, reagents, semi-finished and finished goods.

• Provide solutions to more complex problems, identifies and initiates process improvements

• Perform data and report QC review within the department and may support the Study Director.

• Support validation of new methods that contribute to expansion of service/product line, equipment, and data management systems.

The ideal candidate:

• 3+ years of of direct/demonstrated experience with Liquid Chromatography- Mass Spectrometry (LC-MS) in a contract research organization or industry laboratory in one or more of the following areas:Bioanalytical Method Development for Small and/or Large MoleculesDrug Metabolism and Metabolite Identification w/ Structural ElucidationMass Spectrometry-Based Proteomics experimental design & execution

• Demonstrated experience with validation of bioanalytical methods in accordance with regulatory (FDA, ICH, OECD) guidelines.

• Experience working in a Quality Management System.

• Demonstrated proficiency in High-Throughput analytical method development for small molecules.

• Experience in leading and delivering results in R&D or innovation programs.

• Demonstrated experience leading in human mammalian cell culture laboratories.

• Demonstrated experience working with light-based readers with 384-well and 96-well plates.

• B.S. with 3 years of relevant experience

• M.S. with 2 years of relevant experience

• Ph.D. with 1 years of relevant experience

• Or an equivalent combination of education and experience

• Ability to work in the U.S. indefinitely without sponsorship or restriction

The position is full-time, Monday-Friday, 8 a.m.- 5 p.m., with overtime as needed. Candidates living within a commutable distance of St. Charles, MO are encouraged to apply.

• Excellent full time benefits including comprehensive medical coverage, dental, and vision options

• Life and disability insurance

• 401(k) with company match

• Paid vacation and holidays

Eurofins USA Discovery Services is a Disabled and Veteran Equal Employment Opportunity employer.

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