Data Scientist na VTEX

Remoto - Brazil

As a Data Scientist, you will join the AI Models team at Weni by VTEX, a business unit of VTEX. You will be responsible for researching, developing, and improving machine learning models that power our conversational agents and multi-agent systems. You are driven by curiosity and impact, transforming complex data into tangible improvements in user experience and product performance.

Requirements

Education

Bachelor's degree in Computer Science, Engineering, Statistics, Mathematics, or related fields

Experience

Experience using Git for code version control
Hands-on practice with scikit-learn, pandas, and other data-related frameworks
Experience with cloud services (AWS) for storage, pipelines, and deployment
Monitoring of performance, data drift, and data quality in production
Familiarity with GenAI/LLMs (prompt engineering, fine-tuning, hallucination evaluation)

Skills

Strong foundation in Statistics
Proficiency in Python
Knowledge of Deep Learning
Critical thinking, curiosity, and proactive problem-solving
Clear communication (oral, written, and visual) and collaborative work style

Responsibilities

Research, design, and implement machine learning models to improve the performance of conversational agents and multi-agent systems.
Analyze large datasets to extract insights that guide model improvements and product decisions.
Work closely with engineers and product managers to bring AI models from prototype to production.
Continuously evaluate model performance and iterate based on real-world usage and feedback.
Perform exploratory data analysis (EDA) to uncover hidden structures, anomalies, and relationships in data, informing hypothesis generation and experimental design for conversational AI systems.

Technologies

scikit-learnpandasAWSGenAI/LLMs

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