Senior Associate Quality Scientist - Weekend Shift
Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 28, 2026. EMD Group scores A on the Alion truth index.
Work Your Magic with us! Start your next chapter and join MilliporeSigma.
Ready to explore, break barriers, and discover more? We know you’ve got big plans - so do we! Our colleagues across the globe love innovating with science and technology to enrich people’s lives with our solutions in Healthcare, Life Science, and Electronics. Together, we dream big and are passionate about caring for our rich mix of people, customers, patients, and planet. That's why we are always looking for curious minds that see themselves imagining the unimaginable with us.
This role does not offer sponsorship for work authorization. External applicants must be eligible to work in the US.
Your Role:
The Quality Control Microbiology Department supports quality functions for Active Pharmaceutical Ingredients (APIs) under Good Manufacturing Practice guidelines, including ICH Q7. The QC Sr. Associate Scientist performs a broad range of microbiological analyses with increasing independence and provides reliable laboratory support to internal customers. This role applies sound technical judgment to routine testing, assists with investigations and documentation, and serves as a dependable resource for less experienced team members. This position is located at the 3300 South Second Street facility in St. Louis.
Shift: Friday-Monday 12:00pm - 10:30pm.
Responsibilities include but are not limited to:
- Independently perform qualified routine microbiological testing of in-process, drug substance, raw material, and water samples in accordance with approved procedures.
- Execute and document testing such as bioburden, endotoxin, microbial limits, growth promotion, microbial identification, biological indicator, and verification testing, as qualified.
- Prepare samples, media, reagents, and materials; perform calculations, dilutions, pipetting, and data review with a high degree of accuracy.
- Recognize atypical results and laboratory events, initiate appropriate notifications, and support timely triage and documentation.
- Assist with OOS, OOT, deviation, and root cause investigations by gathering data, evaluating laboratory factors, and completing assigned actions.
- Draft or revise operating procedures, reports, protocols, forms, and other controlled documents with appropriate review.
- Perform minor troubleshooting of methods, equipment, reagents, and test materials within established procedures and escalate when needed.
- Support training and qualification of Associate Scientists and other laboratory personnel on routine methods and good documentation practices.
- Interact regularly with QC, production, quality assurance, and other internal departments to communicate testing status and quality-related information.
- Contribute to continuous improvement, laboratory readiness, and effective execution of work in an ICH Q7 environment.
Who You Are:
Minimum Qualifications:
- Bachelor’s Degree in Biology, Microbiology, or other Life Science discipline.
- 1+ years of Quality Control experience.
- 2+ years of hands-on laboratory experience, including aseptic technique, pipetting, dilutions, calculations, and controlled documentation.
Preferred Qualifications:
- Current API, pharmaceutical, or microbiology Quality Control experience.
- Working knowledge of cGMP, GDP, GLP, ICH Q7, and applicable laboratory procedures.
- Working knowledge of relevant pharmacopeial requirements, including USP <61>, USP <62>, USP <85>, and applicable EP requirements.
- Ability to independently manage routine assignments and communicate issues clearly and promptly.
- Experience with bioburden, endotoxin, microbial limits, growth promotion, microbial identification, biological indicators, or verification studies.
- Experience supporting OOS/OOT, deviation, or root cause investigations.
- Experience writing technical documentation, laboratory reports, protocols, or procedure revisions.
- Good computer skills, including Microsoft Word, Excel, PowerPoint, and laboratory or quality systems.
- Strong attention to detail, organization, time management, problem-solving, and collaboration skills.
Pay Range for this position: $23 - $44 / hour
The offer range represents the anticipated low and high end of the base pay compensation for this position. The actual compensation offered will be determined by factors such as location, level of experience, education, skills, and other job-related factors. Position may be eligible for sales or performance-based bonuses. Benefits offered by the Company include health insurance, paid time off (PTO), retirement contributions, and other prerequisites. For more information click here.
What we offer: We are curious minds that come from a broad range of backgrounds, perspectives, and life experiences. We believe that this variety drives excellence and innovation, strengthening our ability to lead in science and technology. We are committed to creating access and opportunities for all to develop and grow at your own pace. Join us in building a culture of inclusion and belonging that impacts millions and empowers everyone to work their magic and champion human progress!
Apply now and become a part of a team that is dedicated to Sparking Discovery and Elevating Humanity!