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Eurofins

Global lab testing and analytics network

Liquid Chromatography-Mass Spectrometry Senior Scientist

Regulatory & Quality (Life Sciences)Confirmed live in the last 24 hours
Full-timeSt Charles, MO, USAIn-person

About the Job

Requirements

  • A B.S. with a minimum of 5 years of industry laboratory experience with LC-MS/MS, an M.S. with a minimum of 3 years, or a Ph.D. with a minimum of 1 year of laboratory experience with LC-MS/MS.
  • Direct experience with liquid chromatography-mass spectrometry and/or ultraviolet spectrometry 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 bioanalytical method validation concepts in accordance with FDA and ICH guidelines.
  • Experience with liquid handling, automation, solid-phase extraction, high-throughput screening applications, and large-scale screening.
  • Experience in small-team leadership and project management.
  • Experience leading and delivering results in research and development or innovation programs.
  • Authorization to work in the United States indefinitely without restriction or sponsorship.
  • Ability to contribute independently on a project team and deliver on time and to quality expectations.
  • Ability to read, write, and interpret standard operating procedures and technical reports.
  • Ability to perform mathematical calculations, statistical analyses, and data interpretation.
  • Ability to multitask, stay organized, and manage time effectively.
  • Ability to solve practical problems and troubleshoot.
  • Ability to work in a laboratory setting and meet the physical requirements of a laboratory role.
  • Proficiency with laboratory equipment and office computer software.
  • Ability to lead research and development projects and develop new methods.
  • Ability to review data and reports and perform quality-control release.
  • Ability to lead small informal sub-teams and train new team members.
  • Ability to conduct mid-size projects with minimal supervision.
  • Ability to contribute to strategic vision, establish new service lines, and support equipment and data-management systems.
  • Ability to support cross-functional demands.

Responsibilities

  • Perform work in a laboratory setting while meeting the physical requirements of a laboratory role.
  • Conduct production assays primarily in ADME Toxicology Services, with possible support for BioMAP, Immunosignaling, Ion Channel, and/or OncoPanel services based on business needs.
  • Develop liquid chromatography-mass spectrometry methods for ADME/DMPK applications.
  • Develop analytical methods for internal and external project teams to support new assay development.
  • Troubleshoot and maintain mass spectrometers and high-performance liquid chromatography units.
  • Prepare and manage inventory of buffers, reagents, semi-finished goods, and finished goods.
  • Provide solutions to complex problems and identify and initiate process improvements.
  • Maintain high data quality and reproducibility.
  • Perform data and report quality-control reviews within the department and potentially support the study director.
  • Take ownership of client projects with minimal supervision.
  • Support validation of new methods and contribute to expansion of the service/product line, equipment, and data-management systems.
  • Understand and comply with requirements for work performed at a GxP site.
  • Complete required training and support employee health and safety requirements.
  • Demonstrate proficiency in using, caring for, and maintaining laboratory equipment and department assets.
  • Use confidential information technology and business systems responsibly as required.
  • Follow department standard operating procedures and documentation requirements, and maintain accurate data management and reporting.
  • Support unit goals and demonstrate competencies defined in the job plan.
  • Provide training to colleagues and external end users when required.
  • Contribute to the scientific community and site research and development objectives.
  • Work effectively in a team under minimal direction to meet production, project timeline, and quality objectives.
  • Adjust work hours and provide cross-functional support as required, maintaining accountability for client needs and timelines.
  • Routinely communicate project updates to internal and external clients.
  • Perform other assigned duties.

Desired Qualifications

  • Experience with Sciex or Waters instrumentation.
  • Ability to communicate effectively and work interpersonally.
  • Ability to work in a laboratory setting and meet its physical requirements.

About the Company

Eurofins

Global lab testing and analytics network

Eurofins provides global laboratory testing and analytical services to verify the safety, authenticity, and quality of products across food, water, medicine, and the environment. It operates a network of more than 900 laboratories in over 60 countries, offering access to more than 200,000 analytical methods. Its product work involves running specialized tests—using chemistry, biology, and other scientific techniques—to confirm origin, composition, and compliance of samples, such as detecting wine fraud or contaminant presence. The company differentiates itself through its massive, distributed lab network and broad portfolio, enabling standardized testing at scale and fast turnaround across many industries, rather than relying on a single specialty or location. Its goal is to protect public health and safety by delivering accurate, comprehensive testing data and helping clients meet regulatory and quality requirements.

Company size
10,001+
Company stage
IPO
Headquarters
Luxembourg
Founded
1987

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