Staff Software Engineer (AI Backend Services)

Pfizer

📍 Paris, Île-de-France, France 💼 Full time 🕒 Posted March 02, 2026

Apply Now Similar Jobs

Job Description

ROLE DESCRIPTION
The AI Backend Python Engineer (Staff) will provide technical leadership and define the architecture for backend systems that power the next generation of generative AI applications and large language model
(LLM) integrations. This role focuses on driving strategic technical direction, designing platform-level
solutions using Python, FastAPI, and AWS, and influencing engineering practices across the organization.

KEY RESPONSIBILITIES
Define technical strategy and architecture for Python-based AI backend platforms (on FastAPI) that support LLM integration, generative AI pipelines, and AI agent orchestration
Architect scalable, reliable, and secure systems on AWS infrastructure (Lambda, EKS) that serve as the foundation for multiple teams
Drive technical decisions that impact organization-wide engineering practices and platform capabilities
Design and champion AI system observability using LangChain, Langfuse, and ...
            

Ready to Apply?

Submit your application today and join our talented team at Pfizer.

Submit Application

Job Details

Location Paris, Île-de-France
Job Type Full time
Category Computer Occupations
Posted Date March 02, 2026
Application Deadline April 11, 2026