Gen AI Engineering and Scaled AI Transformation

Citigroup Inc.

mississauga, peel region, Canada
Full-time
Posted June 06, 2026

Job Description

Role Focus: Generative AI Engineering and Scaled AI Transformation for Source to Pay technology group - Hybrid

1. Large Language Model (LLM) Strategy & Technical Authority

  • Acts as a senior technical authority on Large Language Models, including both commercial and open‑source ecosystems (OpenAI, Gemini, Claude, Llama).
  • Leads model selection and deployment strategy , balancing use‑case fit, data sensitivity, cost efficiency, latency, accuracy, and regulatory constraints.
  • Guides decisions on hosted vs. private vs. fine‑tuned models , ensuring optimal trade‑offs between performance, control, and operational risk.
  • Establishes enterprise standards for LLM lifecycle management , including upgrades, regression validation, and decommissioning.

2. Hands‑On GenAI Application & Agentic System Design

  • Demonstrates