André Vargas

Telefónica is a Spanish multinational and one of the world's largest fixed and mobile telecommunications companies.

Grupo Casas Bahia is one of Brazil's largest retail companies, with a major e-commerce and physical-store operation.

I worked on the company's AI Platform within the MLOps team, as a Machine Learning Engineer Specialist and then Tech Lead.

• As Tech Lead, led a team of 5 machine learning engineers, organising and driving projects, epics, KRs, and other initiatives in the development of Grupo Casas Bahia's AI Platform.
• Supported the migration of analytical datasets and ML pipelines from Azure to GCP (3,500+ processes) within a company-wide modernisation effort, enhancing performance, cost, and governance foundations.
• Engineered a new end-to-end CI/CD pipeline (Databricks + Airflow + GitHub Actions) for reproducible model and data deployments.
• Contributed to Cerberus, an internal tool to optimise the company's use of MLflow, improving governance, traceability, and reproducibility across ML models and LLM projects.
• Designed and built "Sauron", an internal Databricks-based monitoring framework that automates data quality and drift dashboards across dev and prod via asset bundles, cutting manual setup time from hours to minutes.
• Created a versioning solution for Databricks Genie Agents, enabling a deployment pipeline for Genies and improving governance for the agents team.
• Monitored and operated 20+ Machine Learning models deployed and orchestrated on Databricks and Google Cloud.

Stefanini is a global IT services and software company headquartered in Brazil.

As a contractor at Banco do Brasil, one of Latin America's largest financial institutions, I built ML solutions in a highly regulated banking environment.

• Built credit risk models to estimate the probability of asset default, supporting decision-making in portfolio management and regulatory compliance.
• Developed managerial market projection models to forecast financial trends, enabling strategic planning and business insights for senior stakeholders.

Falconi is one of the largest management consulting firms in Brazil.

I worked on consulting projects, building Machine Learning systems that delivered business value in a fast, secure, and scalable way.

• Designed cloud architecture solutions for ML systems and deployed models to production.
• Applied MLOps and CI/CD best practices; helped develop Falconi's MLOps stack and deployed its MLflow Server on GCP.
• Developed supervised and unsupervised ML models for different business problems, plus data apps and libraries to accelerate projects.

SENAI is one of Brazil's largest industrial education and applied-technology networks, running institutes that deliver R&D and engineering services to industry.

At its Institute of Technology for Electronics and Automation, I developed technological solutions for a range of industry sectors.

• Electronics, microcontrollers, and embedded firmware programming.
• Internet of Things, Industrial Automation, Industry 4.0, and Digital Transformation.
• Hardware design and prototyping for industrial applications.