Senior Principal AI Research Engineer
Core
Design, develop, and deploy production-grade AI systems (LLMs, agentic AI, multimodal models) to transform scientific discovery and drug discovery workflows at Pfizer.
Role type
Senior Principal AI Research Engineer (hands-on IC with architecture ownership)
Builds
End-to-end AI systems, data pipelines, inference services, and human-in-the-loop workflows for biomedical research
Domain
Life Sciences / Drug Discovery / AI
Deliverable
production ML models
Required skills
Python, PyTorch/JAX, software architecture, distributed GPU training, MLOps, LLM/agentic architectures, RAG, model evaluation
Preferred skills
Life sciences domain knowledge, multimodal AI, responsible AI practices, technical publications/patents
Technologies
PyTorch, JAX, LLMs, RAG, Knowledge Graphs, Distributed Training
Responsibilities
Design and deploy production AI systems; translate scientific needs into technical solutions; lead architecture and deployment; mentor less-experienced engineers; define success metrics and improve system reliability
Seniority
Senior, hands-on IC with significant technical ownership
