Scientist 3, Microbiology

Work Your Magic with usStart 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: As a Scientist III in the Microbiological Sciences group, you will leverage your scientific and engineering expertise to develop, validate, and advance microbiological test systems that support product development and manufacturing within Process Solutions R&D. You will lead the design and implementation of robust bacterial ingress and retention testing methods, contribute to system automation initiatives, and collaborate cross-functionally to ensure scientific rigor, regulatory compliance, and product reliability. Your work will directly enable innovation in sterile filtration, contamination control, and microbial risk assessment—driving excellence in product quality, supply, and scientific leadership. Develop and execute bacterial ingress and retention studies for filtration and single-use systems. Design challenge models to evaluate system integrity and microbial barrier performance. Author study protocols, analyze data, and prepare technical reports. Collaborate with engineering and digitalization teams to automate bacterial retention testing systems. Lead system integration projects to modernize microbial testing platforms across R&D and manufacturing labs. Contribute to new equipment and test methods development aligned with regulatory standards (e.g., Annex 1, ASTM F838). Plan and execute method development and validation studies for microbiological assays. Support microbiological expertise in product/process changes, raw material qualification, and contamination control strategies. Minimum Qualifications: Bachelor’s degree in Microbiology, Chemistry, Biomedical Engineering, Chemical Engineering, or other Life Science or Engineering discipline. 5+ years of experience in microbiological method development, bacterial retention/ingress testing, or bioprocess system validation. OR Master’s Degree in Microbiology, Chemistry, Biomedical Engineering, Chemical Engineering, or other Life Science or Engineering discipline. 3+ years of experience in microbiological method development, bacterial retention/ingress testing, or bioprocess system validation. OR PhD in Microbiology, Chemistry, Biomedical Engineering, Chemical Engineering, or other Life Science or Engineering discipline. Preferred Qualifications: Experience in designing method development, bacterial retention/ingress testing, or bioprocess system validation. Strong understanding of sterile filtration, contamination control, and regulatory standards (Annex 1, ASTM, PDA TRs, etc.). Proficiency in data analysis, risk assessment, and technical documentation. Excellent collaboration, communication, and problem-solving skills. Experience with automated retention stands or development of custom bioprocess test rigs. Familiarity with cleanroom practices, BSL-2 testing environments, and digital data acquisition systems. Experience translating complex microbiological data into actionable design and process insights. Hands-on experience with microbial challenge testing and aseptic system design. Pay Range for this position: $110,000 to $135,000. 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 perquisites. 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 #J-18808-Ljbffr