Senior Data Scientist

Description

Job Summary: Develop data science and machine learning solutions to solve business problems, spanning from problem understanding to model/insight delivery. Key Highlights: 1. End-to-end execution in data science and machine learning 2. Collaboration with engineering and business areas 3. Focus on AI and AI agents Vibra Energia's Data and Artificial Intelligence (Data & AI) area is responsible for building, operating, and evolving the company's enterprise-wide data and intelligence capabilities, ensuring data is trustworthy, accessible, governed, and converted into high-impact business decisions and automations. The work is end\-to\-end, covering: **Job Mission** Develop data science and machine learning solutions to solve business problems, spanning from problem understanding to model/insight delivery, using Python, BigQuery, and Vertex AI (where applicable), collaborating with engineering for operationalization and with business areas to capture value—including use cases enabling AI and AI agents. **Responsibilities and Duties** * Translate business problems into hypotheses, metrics, and analytical experiments; * Perform advanced EDA, feature engineering, and training dataset preparation; * Train and evaluate models (classification, regression, time series, clustering, recommendation as needed); * Implement training/inference pipelines (e.g., notebooks \+ Vertex AI pipelines, where applicable); * Work with large-scale data in BigQuery and optimize extractions for modeling; * Support initial deployment and handoff to production with engineering/MLOps (endpoints, batch scoring, scheduled jobs); * Document experiments (metrics, data/model versions, decisions) and support monitoring (drift/performance, where applicable); * Contribute to AI agent components (e.g., features, scoring, intelligent rules, agent performance evaluation). **Requirements and Qualifications** * Completed undergraduate degree; * Intermediate/advanced Python (pandas, numpy, scikit\-learn; notebooks); * Applied statistics and ML fundamentals (validation, overfitting, metrics); * Advanced SQL and experience with BigQuery; * Familiarity with GCP and ML (desirable: Vertex AI, pipelines, endpoints); * Version control with Git and best practices for reproducibility; * Preferred: MLflow/experiment tracking, model registry, LLM/GenAI (where applicable), MLOps fundamentals; **Required Technical Competencies** * Statistical modeling and ML; validation and metrics; * Feature engineering and robust data preparation; * Critical interpretation of results and business-oriented insights; * Best practices for reproducibility (versioning, documentation). **Required Behavioral Competencies** * Critical thinking and analytical rigor; * Proactivity and scientific curiosity; * Clear communication with both technical and non-technical audiences; * Collaboration with engineering/product/business. **Additional Information** **And more—check out our benefits package:** * Health and Dental Plan – Bradesco – extendable to dependents * PAE \- Financial assistance for dependent children and/or stepchildren with intellectual disabilities * Pharmacy Benefit . Discounts up to 85% * Supplementary Pension – FlexPrev Plan \- ranging from 1% to 11%, based on salary * Life Insurance – provided to all employees starting on their admission date, at no cost. * Extended Leave Policies \- Maternity (total of 180 days) and Paternity (total of 20 days). * Meal Allowance and/or Food Voucher – Caju Benefits * Educational Assistance \- For dependents through high school. * TotalPass * Solar Subscription \- Opportunity to obtain special discounts on electricity bills by subscribing to a distributed generation plan. * Smiles Corporate Club \- Up to 50% discount on Smiles plans for travel planning. Available also for spouse and children aged 18+. * Longevity Bonus – Additional salary component (based on tenure), paid during vacation periods. **And for our teams’ development...** * Learning Platform: Vibra’s Values Learning Path and renowned curation with over 200 courses available anytime. * Internal Recruitment: Job openings published nationwide, encouraging internal mobility. **Who We Are?** We are Vibra, a young company that launched at scale—**one of the five largest companies in Brazil**, with a diversified and global investor base. **With over 50 years of experience** and a competent, committed team, we serve more than **30 million people** visiting our 8,000+ service stations across the country via our distributors; and **26,000 corporate clients.** Here, we emphasize **pace** in delivering **results**, and **respect** in relationships. We **listen** empathetically and **deliver** with agility. We act with **ownership** and **collaborate** to make things happen. We speak with **transparency**, act with **integrity**, and **honor our commitments.**