Hybrid AI Backend Engineer (Python, Flask/FastAPI) Toronto

Marsh in Toronto, ON is seeking an AI Developer to design, build, and maintain scalable backend services and AI/LLM APIs using Python, Flask and FastAPI. This hybrid role requires in-office presence at least three days per week.

You will implement REST and WebSocket APIs, RAG pipelines, tool-calling workflows, and model evaluation across GPT and open-source solutions, while ensuring security and performance in production-grade systems.