Data Scientist

Role Overview

• Perform advanced statistical analyses, including hypothesis testing, regression analysis, time series, and statistical validation
• Develop and implement Machine Learning models (classification, regression, clustering)
• Work across the full modeling lifecycle: data preparation, training, tuning, validation and deployment
• Handle imbalanced datasets and optimize model performance
• Develop and optimize SQL queries for manipulating and analyzing large volumes of data
• Work with Hive for table creation, partitioning and query optimization
• Build and maintain data pipelines, ensuring quality, reliability and scalability
• Define and promote best practices in Analytics and Data Science
• Serve as a technical reference, supporting and mentoring the team
• Translate business problems into analytical solutions and data models
• Communicate insights clearly to support decision-making

Requirements

• Strong experience in Statistics:
• Hypothesis testing
• Regression analysis
• Time series
• Statistical validation
• Advanced experience in Machine Learning:
• Classification, regression and clustering
• Model tuning
• Handling imbalanced data
• Building end-to-end pipelines
• Proficiency in Python for:
• Data analysis
• Modeling and visualization
• Use of libraries such as scikit-learn, XGBoost and LightGBM
• Advanced knowledge of SQL
• Experience with Hive (table creation, partitioning and query optimization)
• Knowledge in Data Engineering:
• Pipeline construction
• Orchestration
• Data quality
• Experience in technical leadership and methodology definition
• Experience with Databricks environment: notebooks, clusters, integrations and version control with Git
• Knowledge of relational and non-relational data modeling
• Familiarity with Generative AI:
• LLMs
• RAG (Retrieval-Augmented Generation)
• AI agents
• Experience in consultative roles and understanding business processes
• Ability to communicate insights clearly and strategically

Tech Stack

• Python
• Scikit-Learn
• SQL

Benefits

• Company-subsidized Health Plan for the employee.
• Option to include dependents in the Health Plan with payroll deduction.
• Dental Assistance (optional).
• Option to include dependents in Dental Assistance with payroll deduction.
• Meal allowance or Food allowance.
• Transportation allowance (optional).
• Impact & Care
• Personal Guidance Program providing emotional support and confidential counseling in psychological, legal, financial, social and pet areas at no cost for employee and legal dependents.
• Gympass
• Wellhub (Access to over 700 gyms across Brazil with plans starting at R$ 29.90 deducted from payroll).
• Option to include dependents on Gympass
• Wellhub (up to 3 dependents
• paid via credit card).
• Access to Udemy through our intranet.
• Partnerships with major consumer brands.
• SESC agreement for employee and dependents.
• Discount agreements with educational institutions (undergraduate and postgraduate) and language/certification schools.
• Group life insurance.