Remote [Job - 22203] Senior Data Scientist (NLP), Brazil

Description:

• CI&T is seeking a highly skilled Senior Data Scientist with a strong focus on Natural Language Processing (NLP) to drive AI initiatives within the American health industry.
• The role emphasizes the development of agentic intelligence systems, building Retrieval-Augmented Generation (RAG) frameworks, and creating ontologies that enhance business outcomes through advanced data-driven insights.
• Responsibilities include conducting thorough data exploration to validate requirements for NLP contexts and ensure data quality.
• The candidate will perform NLP pre-processing tasks, including tokenization, lexical analysis, syntactic analysis, semantic analysis, and pragmatic analysis.
• The role requires defining and implementing optimal NLP models that align with expected business outcomes.
• The candidate will contribute to building agentic intelligence systems and RAG frameworks that enhance data-driven decision-making.
• Responsibilities also include developing and managing ontologies to support effective data utilization and enhance understanding across teams.
• The candidate will train and validate models using rigorous experimentation to evaluate and enhance their performance.
• Documenting model development processes, methodologies, and results for both internal and external stakeholders is essential.
• The role involves engaging in text classification and sentiment analysis, employing both traditional machine learning classifiers and deep learning models.
• Continuous evaluation and improvement of NLP model performance through systematic experimentation and analysis is expected.

Requirements:

• Candidates must have solid experience as a Data Scientist, specifically in NLP projects.
• Proficiency in programming with Python, particularly using libraries such as NLTK, spaCy, and Gensim, is required.
• A strong understanding of NLP techniques, including Topic Extraction, Summarization, Categorization, and Sentiment Analysis, is necessary.
• Demonstrated experience with sequence-to-sequence models for tasks such as machine translation, text summarization, and question answering is essential.
• Familiarity with advanced topic modeling techniques, including Latent Dirichlet Allocation (LDA) and Non-negative Matrix Factorization (NMF), is required.
• A comprehensive understanding of the entire data science pipeline, including data gathering, preprocessing, model development, validation, and deployment, is necessary.
• Experience with model mathematical validation techniques, such as accuracy, precision, recall, F1-score, and ROUGE score, is required.
• Candidates should have awareness of ethical considerations in NLP, including biases in data and models, privacy concerns, and potential societal impacts.
• Strong critical thinking skills with the ability to troubleshoot issues and creatively apply different NLP techniques to solve real-world problems are essential.
• Advanced oral and written communication skills in English, with the ability to clearly convey complex concepts to diverse audiences, are required.
• Experience working on international projects, demonstrating adaptability and cultural awareness, is preferred.
• The ability to work collaboratively with cross-functional teams to define the best NLP models aligned with business objectives is necessary.
• A commitment to leveraging state-of-the-art techniques for handling, analyzing, and visualizing large datasets is expected.

Benefits:

• CI&T offers health and dental insurance to its employees.
• Meal and food allowances are provided to support employees' daily needs.
• Childcare assistance is available for employees with children.
• Extended paternity leave is offered to support new parents.
• Employees have access to Wellhub (Gympass) for fitness and wellness.
• TotalPass is included as part of the benefits package.
• Profit-sharing (PLR) opportunities are available for employees.
• Life insurance is provided for added security.
• CI&T University offers opportunities for professional development and learning.
• A discount club is available for various services and products.
• Employees have access to a free online platform dedicated to physical, mental, and overall well-being.
• A pregnancy and responsible parenting course is offered to support employees during significant life events.
• Partnerships with online learning platforms are available for continuous education.
• A language learning platform is provided to enhance communication skills.
• More details about the benefits can be found on the CI&T careers page.