Data Scientist – Machine Learning, NLP, Generative AI

• Develop, build, and validate predictive models using Machine Learning techniques.
• Apply NLP and Generative AI techniques to develop data-driven and natural language-based solutions.
• Work with Transformers, embeddings, semantic search, and RAG architectures.
• Develop LLM-powered applications using frameworks such as LangChain or LangGraph.
• Evaluate the quality and reliability of AI applications, considering response accuracy, hallucinations, security, privacy, and the implementation of guardrails.
• Support the deployment, monitoring, and ongoing improvement of models and applications in production.
• Follow best practices for code version control and collaborate with teams involved in solution development.
• Investigate issues, propose improvements, and contribute to the continuous evolution of Artificial Intelligence applications.

• Proficiency in Python, SQL, statistics, and Machine Learning.
• Hands-on experience building and validating predictive models.
• Hands-on experience with NLP and Generative AI.
• Knowledge of Transformers and libraries such as Hugging Face.
• Experience with embeddings, semantic search, and RAG architectures.
• Knowledge of at least one framework for orchestrating LLM applications, such as LangChain or LangGraph.
• Experience evaluating LLM-based applications, considering response quality, hallucinations, security, privacy, and guardrails.
• Knowledge of Git and the ability to support the deployment and monitoring of solutions in production.
• Technical autonomy, analytical thinking, and strong communication skills.
• Experience processing clinical text and unstructured documents.
• Knowledge of LLM evaluation techniques, including LLM-as-a-Judge.
• Experience with Databricks, Spark, MLflow, Docker, Airflow, or Azure Data Factory.
• Knowledge of inference APIs, infrastructure as code, and observability.
• Experience with the Azure cloud environment.
• Experience with healthcare data, Brazil’s LGPD, clinical validation, interoperability, and clinical data quality.

• Meal voucher or food voucher
• Discounts on courses, universities, and language institutions
• Stefanini Academy — a platform offering free, up-to-date online courses with certificates
• Mentoring
• Benefits club for medical consultations and examinations
• Health insurance
• Dental insurance
• Benefits and discounts club offering deals at leading establishments
• Travel club
• Pet insurance partnership
• Employment under the Stefanini CLT contract