Sr. Analytical Scientist
Manpower Engineering
St. Louis, MO · Posted November 13, 2026
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Where St. Louis, MO ranks
Where St. Louis, MO placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #9Best all-round cities for new graduates in the Midwest52 / 100 · of 20
- #9Cities hosting the most business conferences in the Midwest8 conferences · of 12
- #9Cities hosting the most legal services conferences4 conferences · of 17
- #11Best cities for government pay after cost of living$123k · of 18
- #11Best cities for entry-level jobs that want AI skills in the Midwest4% · of 52
- #12Best all-round cities for remote workers in the Midwest42 / 100 · of 20
How AI is used in this kind of work
Among chemists, AI is already used for some of the tasks. Measured exposure for chemists: 26% (some).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
About the job
Our client, a global leader in Life Science, Biotechnology, and Analytical Research Solutions , is seeking a Sr. Analytical Scientist to join their team. As a Sr. Analytical Scientist , you will be part of the Analytical R&D Department supporting Product Development, Manufacturing Support, and Special Project Teams . The ideal candidate will have strong analytical problem-solving skills , the ability to work independently , and excellent scientific communication skills , which will align successfully in the organization.
Job Title: Sr. Analytical Scientist Location: St. Louis, MO Pay Rate: $59/hr
What's the Job?
Develop and optimize LC-MS assays for quantitative analysis of proteins in complex biological samples. Perform advanced characterization of biomolecules including monoclonal antibodies, multispecific antibodies, and antibody-drug conjugates (ADCs). Provide analytical support to R&D, manufacturing, and cross-functional project teams. Operate and troubleshoot advanced mass spectrometry instrumentation and analytical workflows. Analyze, interpret, and communicate scientific data to support research and product development initiatives.
What's Needed?
BS in Chemistry or a related scientific field (PhD in Analytical Chemistry or related field preferred). Hands-on experience with high-resolution and/or triple quadrupole LC-MS instrumentation. Experience with protein characterization and sample preparation techniques such as digestion, enrichment, depletion, and labeling. Knowledge of large biomolecule workflows including peptide mapping, PTM characterization, glycosylation profiling, or intact mass analysis. Ability to work independently in a laboratory environment and collaborate effectively within multidisciplinary teams.
What's in it for me?
Opportunity to work with a world-class scientific organization driving innovation in life sciences and biotechnology. Exposure to cutting-edge analytical technologies, including advanced LC-MS and biomolecule characterization platforms. Collaborative environment with highly skilled scientists and research professionals. Potential contract extension based on performance and business needs. Comprehensive Manpower benefits including Medical, Dental, Vision, 401(k), weekly pay, holiday pay, and career development resources.
If this is a role that interests you and you’d like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you!
About ManpowerGroup, Parent Company of: Manpower, Experis and Talent Solutions
Experis® is a global leader in technology services and part of the ManpowerGroup® (NYSE: MAN) family of brands. We connect skilled technology professionals with meaningful opportunities where they can grow their careers, expand their expertise and make a real impact. Guided by the belief that it takes Human Ingenuity to unlock the true potential of technology, Experis helps people gain experience with leading organizations, build sought-after skills and take the next step toward a brighter future. Backed by ManpowerGroup's 75+ years of workforce expertise and global reach across more than 70 countries and territories, Experis brings the scale, insight and opportunity to help people and businesses thrive. ManpowerGroup is consistently recognized for its commitment to inclusion, ethics and responsible business, including being named one of the World's Most Ethical Companies. Learn more at Experis.com.