Hybrid Junior Data Scientist

at Mundiale

• Job title: Junior Data Scientist
• Job type: Full Time
• Experience level: Junior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Pandas, Python, Scikit-Learn
• Location requirements: Hybrid, Belo Horizonte, Brazil

About the role

• Data Scientist role at Mundiale, focusing on AI solutions and NLP technologies within a collaborative team environment. Responsibilities include model development and implementation.

Responsibilities

• Implement and test prompt engineering strategies, RAG and model integration in prototype and production environments.
• Build and evolve AI agents based on LLMs for automated customer support in chatbots.
• Develop, train and evaluate text classification models for intent recognition and other NLP use cases.
• Create data pipelines for preparing, cleaning, balancing and enriching textual datasets.
• Define and monitor performance metrics, performing statistical analyses for continuous model improvement.
• Work closely with Product, Engineering and Data Science teams to translate business needs into applied AI solutions.

Requirements

• Degree in Statistics, Data Science, Computer Science or related fields.
• Proficiency in Python programming and experience with libraries such as Pandas, Scikit-learn, Transformers and visualization tools (Matplotlib, Seaborn, Plotly).
• Knowledge of applied statistics and exploratory data analysis, including hypothesis testing, classification metrics and model validation.
• Experience training and evaluating classical classification models (logistic regression, tree-based models, etc.).
• Knowledge of NLP, with a focus on BERT and semantic representation techniques such as embeddings.
• Experience with LLMs, prompt engineering, AI agents and use of RAG architectures in customer service chatbots.
• Practical experience applying AI to products and automating conversational flows.

Benefits

• Flexible Benefit (allocate according to your needs: culture, ride-sharing/taxi app, subscriptions, gym, food, etc.)
• Unimed Unipart Health Plan
• Career development path
• Hybrid work
• Day Off
• Short Friday
• Collaborative and dynamic work environment