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# LC-MS/MS Sr. Scientist

- **Company:** EUROFINS
- **Location:** Saint Charles, MO, United States
- **Experience:** Expert
- **Salary:** $70,000.0 - $90,000.0
- **Contract:** Permanent contract
- **Skills:** Data Analysis, Business Systems, Data Management, GXP
- **Published:** October 17, 2026
- **Apply:** https://jobs.smartrecruiters.com/Eurofins/744000156092479-lc-ms-ms-sr-scientist

## About the Role

+ B.S. with minimum 5 years of industry laboratory experience with LCMS/MS
 + M.S. with minimum 3 years of industry laboratory experience with LCMS/MS
 + Ph.D. with minimum 1 year of laboratory experience with LCMS/MS
Basic Minimum Work Requirements:

 + Direct experience with Liquid Chromatography- Mass Spectrometry and/or ultraviolet spectrometry (LC-MS or LC-UV) in a contract research organization or industry laboratory for ADME/ DMPK applications
 + Experience working in a Quality Management System
 + Scientific expertise with mass spectrometry-based quantification for ADME/ DMPK applications in biological matrices.
 + Experience with analytical method development and optimization
 + Familiarity with concepts of validation of bioanalytical methods in accordance with regulatory (FDA, ICH) guidelines
 + Experience with liquid handling, automation, solid-phase extraction (SPE), HTS applications, and large-scale screening
 + Experience in small team leadership and project management
 + Experience in leading and delivering results in R&D or innovation programs
 + Authorization to work in the United States indefinitely without restriction or sponsorship.
The Ideal Candidate Possesses the Following:

 + Good communication and interpersonal skills
 + Demonstrated proficiency in contributing independently on a project team with time and quality deliverables
 + Ability to read, write, and interpret documents, such as standard operating procedures and technical reports
 + Ability to perform mathematical calculations, statistical analyses, and data interpretation
 + Ability to multitask with organization and manage time effectively
 + Ability to solve practical problems and troubleshooting skills
 + Ability to work in a laboratory setting, according to physical requirements of a laboratory role
 + Lab equipment and office computer/software proficiency
 + Above average oral and written communication skills
 + Demonstrates a positive attitude, capacity for team environment, and exhibits a genuine interest in drug discovery in support of advancing human health
 + Ability to develop new methods, and lead research and development projects
 + Ability to review and QC release data/reports
 + Ability to lead small, informal sub-teams, train, and train new team members
 + Ability to conduct mid-size projects with minimal supervision
 + Ability to contribute to strategic vision, establishment of new service lines, equipment, and data management systems
 + Ability to easily support cross-functional demands

## Description

The Scientist I - Analytical Chemist will support the Eurofins Discovery business in contract research services. This role requires applied experience and proven knowledge in analytical chemistry methods with related experience in a contract research organization (CRO) or industry laboratory.
LCMS Sr. Scientist Responsibilities Include but are not Limited to the Following:

 + Performs work in a laboratory setting, meeting the physical job requirements of a lab role.
 + Conducts production assays primarily in ADME Toxicology Services, but may support BioMAP®, Immunosignaling, Ion Channel, and/or OncoPanel Services based on business needs.
 + Develops Liquid Chromatography- Mass Spectrometry (LC-MS) methods for ADME/ DMPK applications
 + Develops analytical methods supporting project teams both internally and externally for new assay development.
 + Performs Troubleshooting and Maintenance of Mass Spectrometers and HPLC units. Experience with Sciex® or Waters Instrumentation is a plus.
 + Prepares and manages inventory of buffers, reagents, semi-finished and finished goods.
 + Provides solutions to more complex problems, identifies and initiates process improvements
 + Maintains high data quality and reproducibility.
 + Performs data and report QC review within the department, and may support study director.
 + Takes ownership of client projects with minimal supervision.
 + Supports validation of new methods, and contributes to expansion of service/product line, equipment, and data management systems.
 + Understands and complies with requirements for work performed at a GxP site.
 + Completes required training and supports 100% of Employee Health and Safety requirements.
 + Demonstrates proficiency with, care and maintenance of lab equipment and department assets.
 + Conducts responsible use of confidential IT and business systems, as required.
 + Adheres to department SOPs and documentation requirements, maintains accurate data management and reporting.
 + Supports unit goals and demonstrates Eurofins' competencies, as defined in the job plan.
 + Provides training to colleagues and external end users, when required.
 + Contributes to scientific community, and site research and development objectives.
 + Works effectively in a team environment, under minimum direction, to achieve business production, project timelines, and quality objectives.
 + Adjusts work hours and provides cross-functional support to other departments, as required, and maintains accountability in delivering to client needs/timelines.
 + Routinely communicates project updates to internal and external clients.
 + Performs other duties, as assigned