Senior Data Scientist

Description

Extractta is seeking a **Data Scientist** to join the team of one of our strategic clients in the financial sector — a large-scale company and a reference in digital innovation. This is an opportunity to work at the core of the data strategy, solving real-world, large-scale problems within a financial and digital product ecosystem that directly impacts the lives of millions of customers. In this role, your mission will go far beyond numbers: you will be challenged to translate complex business needs into predictive models and intelligent solutions. With a strategic focus, you will play a leading role in evolving the product ecosystem, in an environment where data culture is the engine driving innovation across all areas. **Responsibilities and duties** * Conduct exploratory analyses of large volumes of transactional and behavioral data to uncover actionable insights and business opportunities. * Build and implement machine learning and deep learning models that solve real-world problems, such as fraud detection, recommendation systems, credit risk analysis, purchase propensity modeling, and churn prediction, among others. * Validate hypotheses through controlled experiments, using A/B testing methodologies and statistical analysis. * Collaborate with Product Owners and engineers to translate business problems into robust, scalable analytical solutions. **Requirements and qualifications** * **Machine Learning:** experience building machine learning models in production environments, with understanding of the challenges involved in developing scalable solutions for real-world scenarios. * **Programming:** proficiency in Python with libraries such as pandas, numpy, and matplotlib; experience with SQL for handling large volumes of data. * **Statistics:** solid foundation in descriptive and inferential statistics, hypothesis testing, analysis of variance, probability concepts, and A/B experimentation methodologies. * **Data Mining:** ability to explore and extract insights from complex datasets, identify patterns and anomalies, and work with structured and semi-structured data from diverse sources. * **Data Storytelling:** ability to communicate technical results and insights through clear presentations and effective visualizations for diverse audiences, translating complex findings into actionable recommendations. **Desirable:** --------------- * Knowledge of **Spark** for distributed processing. * Experience with deep learning frameworks and deploying models into production (MLOps). **Additional information** * Meal Allowance and/or Food Voucher; * SESI and SESC Health Plan, offering access to health, wellness, and leisure services; * Partnerships with Educational Institutions, providing exclusive discounts on courses and educational programs; * Opportunities for career growth and participation in strategic projects; * Opportunity to work at a rapidly expanding market company. Extractta was founded with the purpose of transforming technology into tangible results for companies across multiple industries. Throughout our journey, we have established ourselves as an innovation and technology consultancy that combines strategy, people, and digital solutions to support organizations facing growth and transformation challenges. We operate across multiple fronts — from digital innovation and transformation to project and operations management — helping companies achieve exceptional results through efficiency, process intelligence, and continuous adaptation. We also stand out for our specialized consulting, which helps our partners evolve their digital culture, communication, data capabilities, and adoption of emerging technologies, while global partnerships enable us to deliver best-in-class solutions to our customers’ ecosystems — all supported by a highly specialized team! At Extractta, we believe people are our differentiator. That’s why we invest in a collaborative, innovative, and open environment where every talent has space to learn, grow, and contribute to challenging projects that truly transform businesses. If you’re looking for a company in constant evolution, passionate about technology and committed to its employees’ development, this could be your place. Join Extractta and help build the future with us.