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Itaú Unibanco

Senior Data Scientist – Generative AI, Fraud Prevention

Itaú Unibanco

Senior Data Scientist specializing in Generative AI at Itaú for Fraud Prevention. Designing, building, and scaling AI solutions for operational efficiency.

Posted 5/14/2026full-timeSão Paulo • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies
CloudPython

About the role

Key responsibilities & impact
  • Map and understand operational processes in collaboration with business areas
  • Identify opportunities for automation and efficiency improvements
  • Design solutions using Generative AI (LLMs)
  • Build and evolve AI agents
  • Implement solutions with a production focus (productization and scaling)
  • Structure data and pipelines to support AI applications
  • Monitor and continuously evolve deployed solutions
  • Work closely with the business (fraud prevention)

Requirements

What you’ll need
  • Strong experience with Python
  • Background in machine learning and mathematical modeling
  • Experience with Generative AI (LLMs)
  • Experience with prompt engineering and building AI agents
  • Knowledge of RAG (embeddings, retrieval, and vector databases)
  • Experience with frameworks such as LangChain or LangGraph
  • Experience with Agentic RAG and agent orchestration (a plus)
  • Understanding of AI security (prompt injection, data leakage, guardrails) (a plus)
  • Experience in process automation (a plus)
  • Experience in the financial industry / fraud prevention (a plus)
  • Certifications in AI, data, or cloud (a plus)

Benefits

Comp & perks
  • Transportation allowance (Vale-Transporte)
  • Meal voucher (restaurants) / Food voucher (supermarkets)
  • Medical plan (Fundação Saúde Itaú or Central Nacional Unimed)
  • Dental plan (Odontoprev or Interodonto)
  • Life insurance
  • Profit-sharing (PLR) — subject to the bank's results
  • Private pension plan
  • Exclusive discounts on our financial products
  • Extended maternity and paternity leave
  • Childcare / babysitting assistance (for parents)
  • Education support
  • Access to Wellhub or TotalPass
  • Access to Itaú leisure clubs (Guarapiranga / Itanhaém and São Sebastião)
  • + Some additional benefits you can learn about during the process 😊

ATS Keywords

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Hard Skills & Tools
Pythonmachine learningmathematical modelingGenerative AIprompt engineeringAI agentsRAGLangChainLangGraphprocess automation
Soft Skills
collaborationproblem-solvingcommunication
Certifications
AI certificationdata certificationcloud certification