Senior Data Scientist, LLM

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CI&T

WebsiteLinkedInAll Job Openings

5001 - 10000 employees

Founded 1995

🤖 Artificial Intelligence

☁️ SaaS

💰 $5.5M Venture Round on 2014-04

Artificial Intelligence • Cloud Services • SaaS

CI&T is a global tech transformation specialist focusing on helping organizations navigate their technology journey. With services spanning from application modernization and cloud solutions to AI-driven data analytics and customer experience, CI&T empowers businesses to accelerate their growth and maximize operational efficiency. The company emphasizes digital product design, strategy consulting, and immersive experiences, ensuring a robust support system for enterprises in various industries.

📋 Description

• CI&T is expanding its work in conversational artificial intelligence solutions to transform our client's digital customer service in the telecommunications sector. • We are looking for a talented Data Scientist to lead the intelligence layer of a strategic project that will implement an end-to-end generative AI solution to carry out sales journeys and personalized offers through text channels. • This professional will play a key role in ensuring the accuracy, safety, and quality of AI agent responses. • The position requires a balance between deep technical expertise in language models, a strategic vision for conversational quality, and the ability to translate business requirements into auditable safety policies. • Monitor and optimize conversational quality metrics, including First Contact Resolution (FCR), fallback rates, and response accuracy. • Conduct A/B tests of prompts and language models for continuous improvement of the conversational experience.

🎯 Requirements

• Strong experience as a Data Scientist • Proven experience with large language models (LLMs) and natural language processing (NLP) • Expertise in evaluation techniques for generative AI models, including frameworks such as RAG, G-Eval, or equivalents • Advanced proficiency in Python, including libraries like Pandas, NumPy, and scikit-learn • Solid foundation in statistics and probability applied to machine learning problems • Hands-on experience with cloud computing platforms (AWS, GCP, Azure, or Oracle Cloud Infrastructure) • Ability to translate business requirements into measurable and auditable technical solutions. • Experience with Oracle Cloud Infrastructure (OCI) and its generative AI services (desirable) • Practical knowledge of Speech-to-Text and Text-to-Speech pipelines, especially with Whisper or equivalent technologies (desirable) • Experience with fine-tuning language models (Llama, Cohere, GPT or similar) (desirable) • Familiarity with configuring NeMo Guardrails or equivalent conversational safety frameworks (desirable) • Previous experience in voice projects, contact centers, or automated customer service (desirable) • Experience in the telecommunications sector or industries with a high volume of customer interactions (desirable)

🏖️ Benefits

• Health and dental insurance; • Meal and food allowance; • Childcare assistance; • Extended parental leave; • Partnerships with gyms and health & wellness professionals via Wellhub (Gympass) / TotalPass; • Profit Sharing (PLR); • Life insurance; • Continuous learning platform (CI&T University); • Discount club; • Free online platform dedicated to promoting physical and mental health and wellbeing; • Maternity and responsible parenting course; • Partnerships with online course platforms; • Language learning platform; • And many more