Sr. Scientist​/Engineer - Process Microbiology

Tech Ops Full Time Branchburg, NJ, US

Salary Range: $87,000.00 To $ Annually

Celltrion is a leading biopharmaceutical company specializing in the research, development, and manufacturing of innovative therapeutics. We are committed to delivering innovative and affordable medications that expand patient access to advanced therapies. Celltrion has been at the forefront of biotherapeutic development, uncovering new ways to target the drivers of disease through next-generation biologics and small-molecule products.

Celltrion Branchburg, LLC is a subsidiary of Celltrion USA, established in 2025 following Celltrion USA’s acquisition of Eli Lilly’s drug substance manufacturing facility in Branchburg, New Jersey. By combining strong local manufacturing capabilities with an established direct-sales network, we aim to create greater synergies across our operations. Looking ahead, we also anticipate expanding into the global contract manufacturing organization sector.

This position is responsible for process microbiological support for biotechnology manufacturing processes, overseeing a robust Product Protection Control Strategy against Adventitious Agents in a cGMP environment,and building the organization’s knowledge of aseptic manufacturing operations. This role partners with Operations, QC Microbiology, Engineering, other TS/MS Scientists, and Quality on risk-based assessments, testing strategies and troubleshooting.

1. Monitors (trends) in-process microbiological data and presents analyses in Manufacturing Process Team meetings.

2. Provide on-the-floor microbiological support for manufacturing processes including generation and maintenance of manufacturing support documentation (e.g. SOPs, trend analyses, evaluation protocols)

3. Assist/Lead deviation investigations. Troubleshoot suspected microbiological contamination incidents.

4. Collaborate with Operations and Engineering to implement equipment, procedure and/or automation improvements to mitigate identified microbiological risk points.

5. Provide microbiology guidance on facility and process-related controls and changes.

6. Oversee process contamination prevention and control according to Product Protection

7. Develop in-process microbiological acceptance criteria, sampling requirements, summations,

procedures, and reports. Collaborate with QC Microbiology on specifications and microbiological control strategy.

8. Serve as subject matter expert for evaluation and mitigation of microbiological trends.

9. Support microbiological requirements for in-process hold time studies as well as small-scale studies to support hold time, resin cleaning, and other process validation activities.

10. Collaborate with Validation Technical Services on microbiological requirements for cleaning/SIP validation and facility/equipment qualification.

11. Collaborate with Quality Control in the development and execution of the facility-based environmental monitoring and clean utilities microbiology programs for the site.

12. Build deep technical expertise in the area of responsibility.

1. Knowledge of aseptic manufacturing operations.

2. Strong investigational skill, working knowledge of microbiology assay development and validation.

3. Demonstrated strong data-driven decision-making and problem-solving capabilities.

4. Demonstrated strong interpersonal skills in cross-functional teamwork environment.

5.Demonstrated strong communication skills, both oral and written. Technical writing including position papers, validation reports, and microbiological investigations.

6. Demonstrated ability to participate in and facilitate…