**Last day to apply May 24th, 2026
Why Patients Need You ** Pfizer’s purpose is to deliver breakthroughs that change patients’ lives. Research and Development is at the heart of fulfilling Pfizer’s purpose as we work to translate advanced science and technologies into the therapies and vaccines that matter most. Whether you are in the discovery sciences, ensuring drug safety and efficacy or developing manufacturing processes in support of clinical studies, you will apply cutting edge design and process development capabilities to accelerate and bring the best-in-class medicines to patients around the world.
What You Will Achieve
The Upstream Process Development group within the Bioprocess R&D organization is seeking a Postdoctoral Fellow – AI/ML Enabled Bioprocess Modeling and Control. The successful applicant will join a team of scientists and engineers focused on developing and optimizing manufacturing processes for recombinant proteins and other modalities for early- and late-phase human clinical trials.
This role will focus on developing and applying innovative mathematical and computational modeling approaches to characterize, understand, and predict complex biological systems used for recombinant protein vaccine and therapeutic production. The postdoctoral fellow will develop hybrid mechanistic and data‑driven models for mammalian cell culture processes and leverage transcriptomic and other omics data to enable early clone selection based on predicted process performance and generational stability. In addition, the individual will develop a model predictive control (MPC) framework that uses these models to enable real‑time monitoring and control of cell culture processes.
Further, the postdoctoral fellow will design and conduct targeted experiments to generate data for model development, training, validation, and control strategy evaluation. The role will also explore agentic AI approaches to orchestrate model fitting, transfer learning, and deployment across portfolio projects, enabling scalable and adaptive reuse of models for early decision‑making and process control. This position is well suited for a highly motivated scientist with strong expertise in machine learning, systems biology, kinetic modeling, process control, and mammalian cell metabolism.
RESPONSIBILITIES
- Develop hybrid mechanistic–data driven models for mammalian cell culture processes supporting recombinant protein production.
- Integrate transcriptomic and other omics data as structured inputs for clone specific performance and stability prediction.
- Apply machine learning and deep learning methods for phenotypic clustering, parameter estimation, and performance prediction.
- Extend existing mechanistic bioprocess models to include additional physiological functions (e.g., amino acid metabolism, regulatory feedback loops) using kinetic, genome scale, or data driven modeling approaches.
- Design and implement model predictive control (MPC) frameworks using mechanistic and hybrid models for real time control of critical process variables (e.g., feeding strategies, metabolite control).
- Design and execute shake flask, ambr®, or bench scale bioreactor experiments to generate process and omics datasets for model development and validation.
- Perform in silico sensitivity and scenario analyses to understand process robustness, control leverage, and drivers of performance and stability.
- Validate models and control strategies using historical and new datasets, and deploy them prospectively to support new development programs.
- Explore agentic AI frameworks to orchestrate model fitting, validation, and transfer learning across portfolio projects, enabling scalable adaptation of models to new clones and processes with human‑in‑the‑loop decision support.
- Maintain rigorous documentation in electronic laboratory notebooks and internal technical reports.
- Communicate results effectively through presentations, technical discussions, and peer reviewed publications.
- Collaborate with cross functional teams across different time zones and contribute to mentoring junior scientists as appropriate.
BASIC QUALIFICATIONS
- PhD in Chemical Engineering, Biochemical Engineering, Bioengineering, Systems Biology, Computational Biology, or a closely related field (0–2 years postdoctoral experience). Less than 2 years of post-degree (PhD) experience.
- Willingness to make a minimum 2-year commitment.
- Successful record of scientific accomplishments evidenced by scientific publications and/or presentations with at least one first-author publication in a peer-reviewed journal.
- Two letters of recommendation are also required prior to interview stage.
- Strong foundation in mathematical modeling, chemical/biochemical reaction kinetics, and mammalian cell culture processes.
- Proficiency in scientific computing using Python, Julia and/or MATLAB (experience with control toolboxes, optimization solvers, or ML libraries is a plus).
- Strong analytical, problem‑solving, and communication skills, with the ability to work independently and in interdisciplinary teams.
- Demonstrated expertise in machine learning and data‑driven modeling, including regression, classification, clustering, and model validation.
- Experience integrating omics data (especially transcriptomics) with mechanistic or hybrid models.
PREFERRED QUALIFICATIONS
- Familiarity with process systems engineering and control concepts, including model predictive control, optimal control, or dynamic optimization.
- Experience building modular, reusable AI/ML workflows that support transfer or multi‑task learning across related systems, with familiarity in adaptive decision‑making and human‑in‑the‑loop modeling concepts.
- Understanding of CHO cell physiology, central carbon and amino acid metabolism, and regulatory mechanisms relevant to bioprocessing.
- Hands‑on experience designing and executing cell culture experiments is highly desirable.
ADDITIONAL INFORMATION Relocation support available Work Location Assignment: On Premise Last day to apply May 24th, 2026
The annual base salary for this position ranges from $64,600.00 to $107,600.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 7.5% of the base salary. We offer comprehensive and generous benefits and programs to help our colleagues lead healthy lives and to support each of life’s moments. Benefits offered include a 401(k) plan with Pfizer Matching Contributions and an additional Pfizer Retirement Savings Contribution, paid vacation, holiday and personal days, paid caregiver/parental and medical leave, and health benefits to include medical, prescription drug, dental and vision coverage. Learn more at Pfizer Candidate Site – U.S. Benefits | (uscandidates.mypfizerbenefits.com). Pfizer compensation structures and benefit packages are aligned based on the location of hire. The United States salary range provided does not apply to Tampa, FL or any location outside of the United States.
Relocation assistance may be available based on business needs and/or eligibility.
Candidates must be authorized to be employed in the U.S. by any employer.
U.S. work visa sponsorship (such as TN, O-1, H-1B, etc.) is not available for this role now or in the future.
Sunshine Act
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EEO & Employment Eligibility
Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, disability or veteran status. Pfizer also complies with all applicable national, state and local laws governing nondiscrimination in employment as well as work authorization and employment eligibility verification requirements of the Immigration and Nationality Act and IRCA. Pfizer is an E-Verify employer. This position requires permanent work authorization in the United States.
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Research and Development