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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Applicant Tracking System Keywords

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Hard Skills & Tools

Pythonmachine learningmathematical modelingGenerative AIprompt engineeringAI agentsRAGLangChainLangGraphprocess automation

Soft Skills

collaborationproblem-solvingcommunication

Certifications

AI certificationdata certificationcloud certification