Director of AI Engineering Pfizer R&D

• United States - Massachusetts - Cambridge

We’re in relentless pursuit of breakthroughs that change patients’ lives. We innovate every day to make the world a healthier place.

To fully realize Pfizer’s purpose – Breakthroughs that change patients’ lives – we have established a clear set of expectations regarding “what” we need to achieve for patients and “how” we will go about achieving those goals.

Pfizer Research & Development serves as the beating heart of Pfizer's trailblazing product pipeline, the essence of our mission to bring life-changing medicines to the world.

Pfizer offers competitive compensation and benefits programs designed to meet the diverse needs of our colleagues.

Pfizer is building an AI-first R&D engine—one where AI is not a support function, but a core scientific capability shaping how medicines are discovered, developed, and delivered.

We are recruiting AI Engineers to be embedded into the various scientific disciplines of R&D including, Target Discovery, Medicinal and Biomedicine Design, ADME (Absorption, Distribution, Metabolism, Excretion), Translational & Genomics Medicine, Clinical Manufacturing, Preclinical Toxicology, Clinical Trial Design & Execution, Medical Functions, Real World Experience, Global Regulatory functions, Safety and Pharmacovigilance. You will help drive the discovery and development of Pfizer’s next generation of breakthrough medicines.

As a Director of AI Engineering, embedded within one of our core scientific disciplines, you’ll work shoulder-to-shoulder with leading scientists and clinicians to translate complex biology into new therapies, supported by AI models. Your models won’t live in notebooks—they’ll influence molecules selected, studies designed, and patients treated.

If you’re a rising AI technical leader (2–5 years post-graduate training) from a top research environment who thrives at the intersection of AI, biology, and real-world impact, this is an opportunity to help define how AI is applied and practiced in modern medicine, potentially impacting the lives’ of patients globally.

• Build AI that directly shapes R&D decisions
  Design, develop, and scale production-grade AI systems embedded in drug discovery and development programs—where model outputs inform choices on molecules, experiments, trials, and patient access to clinical trials.
• Own foundational and predictive modeling end-to-end
  From molecular optimization and experimental design to clinical trial simulation, patient stratification, and operational forecasting—take ideas from concept through validation, deployment, and measurable value.
• Advance generative AI for drug design
  Apply state-of-the-art generative approaches to molecular and protein engineering. Prototype quickly, evaluate rigorously, and deploy responsibly in high-stakes scientific contexts.
• Engineer elegant, reliable ML systems
  Architect robust pipelines with modern MLOps: cloud and HPC environments, distributed training, reproducibility, governance, and observability—designed for scientific credibility and operational scale. Automate and standardize the entire lifecycle of ML systems, from initial development to long-term production maintenance, providing compliance and an audit trails.
• Decode high-dimensional biology
  Integrate multimodal data—omics, imaging, real-world evidence, and scientific literature—into representations that surface biological insight and guide experimental and clinical strategy.
• Influence portfolio and strategy decisions
  Partner with scientific and strategy leaders to model uncertainty, run scenario analyses, and optimize resource allocation across a complex R&D portfolio.
• Stay at the frontier
  Continuously assess emerging AI methods and tools, translating advances into practical, defensible applications for a specific R&D discipline.
• Raise AI fluency across the organization
  Mentor scientists and engineers, foster hands-on curiosity, and help build a culture where rigorous experimentation and learning are the norm.
• Represent the science externally
  Publish, present, and engage with the broader AI and life-sciences…