Scientist II - Analytical Chemist

LabRulez; Missouri; On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Medical, Dental & Vision

Life Insurance

Disability Insurance

401(k) with company match

Paid vacation and holidays

Job summary

Eurofins USA Discovery Services is seeking an experienced Scientist II - Analytical Chemist to advance LC-MS method development for ADME/DMPK and BioAnalysis in a CRO/industry lab. You will help mentor junior scientists, manage daily lab operations, and contribute to method validation under regulatory guidelines.

Ideal candidates have 5+ years of LC-MS experience, strong analytical skills, and familiarity with QMS. This full-time role operates Monday–Friday at our St.

Qualifications

• 5+ years of LC-MS experience in CRO or industry lab.
• Bioanalytical method development for small/large molecules.
• FDA/ICH/OECD method validation experience.
• Strong communication and interpersonal skills.
• Experience in Quality Management System.
• BS with 7+ years, MS 5+, or PhD 3+ years of relevant experience.

Responsibilities

• Develop LC-MS methods for ADME/DMPK and BioAnalysis.
• Lead and mentor junior scientists and manage lab planning.
• Troubleshoot MS and HPLC instruments.
• Prepare and manage buffers/reagents inventories.
• Support validation of new methods and data management.
• Perform data QC and support Study Director.

Skills

LC-MS Proficiency

Bioanalytical Method Development

Regulatory Method Validation

High-Throughput Analysis

Communication Skills

Education

B.S. in Chemistry or related

M.S. in Chemistry

Ph.D. in Chemistry or related

Tools

Sciex Instruments

Thermo Instruments

Job description

Analytical chemist, Liquid chromatography, Liquid chromatography-mass spectrometry, Scientific and Research Fellow

Eurofins Scientific is an international life sciences company, providing a unique range of analytical testing services to clients across multiple industries, to make life and our environment safer, healthier and more sustainable. From the food you eat, to the water you drink, to the medicines you rely on, Eurofins works with the biggest companies in the world to ensure the products they supply are safe, their ingredients are authentic and labelling is accurate. Eurofins believes it is a global leader in food, environmental, pharmaceutical and cosmetics products testing and in agroscience CRO services. It is also one of the global independent market leaders in certain testing and laboratory services for genomics, discovery pharmacology, forensics, CDMO, advanced material sciences and in the support of clinical studies.

In over 35 years, Eurofins has grown from one laboratory in Nantes, France to 61,000 staff across a decentralised and entrepreneurial network of ca. 900 laboratories in 61 countries. Eurofins companies offer a portfolio of over 200,000 analytical methods to evaluate the safety, identity, composition, authenticity, origin, traceability and purity of biological substances and products.

In 2025, Eurofins generated total revenues of EUR 7.296 billion, and has been among the best performing stocks in Europe over the past 20 years.

Scientist II - Analytical Chemist

Job Description

Are you looking to grow your career in analytical chemistry? Come join our growing team!The Scientist II – Analytical Chemist 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:

• Performwork in a laboratory setting, meeting the physical job requirements of a lab role.
• DevelopLiquid Chromatography- Mass Spectrometry (LC-MS) methods for ADME/ DMPK and BioAnalysis applications
• Provideleadership and mentorship for junior scientists, and lab leadership through daily lab management, equipment management and lab planning.
• Developanalytical 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.
• Prepareand manages inventory of buffers, reagents, semi-finished and finished goods.
• Providesolutions to more complex problems, identifies and initiates process improvements
• Performdata and report QC review within the department and may support the Study Director.
• Supportvalidation of new methods that contribute to expansion of service/product line, equipment, and data management systems.

Qualifications

The ideal candidate:

• 5+ 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 Molecules
  • Drug Metabolism and Metabolite Identification w/ Structural Elucidation
  • Mass Spectrometry-Based Proteomics experimental design & execution
• Demonstrated experience with validation of bioanalytical methods in accordance with regulatory (FDA, ICH, OECD) guidelines.
• Good communication and interpersonal skills
• 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
• B.S. with 7 years of relevant experience
• M.S. with 5 years of relevant experience
• Ph.D. with 3 years of relevant experience
• Or an equivalent combination of education and experience

Additional Information

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.