Navigate Change
Senior Data Scientist, LLM
Location
Brazil
Posted
1 day ago
Salary
0
Seniority
Senior
Job Description
Senior Data Scientist, LLM
CI&T
• 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.
Job 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
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Director of Data Science
The HartfordFounded in 1810, The Hartford is one of the nation's largest investment and insurance companies. As an employer, The Hartford has been named among the region's
Title: Director of Data Science Location: Hartford CT- Home Office Charlotte, NC Chicago, IL Job Description: Dir Data Science - GD06AE We're determined to make a difference and are proud to be an insurance company that goes well beyond coverages and policies. Working here means having every opportunity to achieve your goals - and to help others accomplish theirs, too. Join our team as we help shape the future. A new role can expand your knowledge, your network, and help you learn more about our business. If you think this opportunity is a fit for your career you should apply. If you are not sure you can have a conversation with your manager. The Hartford is seeking a Director of Data Science to lead the Personal Insurance modeling within the Actuarial Strategic Modeling (ASM) department. This leadership role offers a unique opportunity to drive innovation in predictive modeling, machine learning, and actuarial analytics in either personal auto, or both personal auto and homeowners depending on background. You will manage a high-performing team of data scientists and actuaries, collaborating with cross-functional partners in actuarial, data engineering, and other modeling organizations to deliver modeling solutions that directly impact business strategy. The ASM group is committed to advancing model workflows through scalable systems, and continuous model delivery-and is searching for a leader to guide and shape this innovative direction. Responsibilities: - Lead Personal Insurance Actuarial Modeling: Serve as the model owner for personal insurance predictive models within actuarial, ensuring alignment with ratemaking and business priorities. Partner on strategic vision while managing team capacity and driving timely model deliverables. - Model Development & Deployment: Lead design, maintenance, and deployment of predictive models for frequency, severity, and loss cost estimates, ensuring production readiness and effective integration into actuarial workflows. - Cross-Functional Collaboration: Partner with Actuarial, Data Engineering, and other modeling organization teams to connect modeling initiatives with ratemaking strategies and organizational goals, promoting shared problem-solving. - Innovation: Drive modernization through advanced modeling techniques, machine learning, and AI to enhance efficiency and decision-making. Lead experimentation with new data sources, features, and methodologies to uncover insights and advance strategic objectives. - Operational Excellence: Ensure robust documentation, validation, and governance, along with scalable processes to monitor model performance and maintain reliability. - Talent Development: Mentor and develop team members, fostering a culture of curiosity, ownership, and continuous learning. Support hiring and onboarding, including intern and actuarial student rotations. - Strategic Influence: Participate in enterprise initiatives to ensure personal insurance predictive models are efficiently integrated into core data and system platforms. Qualifications: - 8+ years of relevant analytical experience recommended. - Master's or Ph.D. in Statistics, Applied Mathematics, Quantitative Economics, Actuarial Science, Data Science, Computer Science, or a similar analytical field, or a relevant professional designation (e.g. FCAS, FSA, CSPA, ACAS, ASA)" - Expertise in statistical modeling, inference, and building machine learning algorithms in Python and/or R. - Prior Management Experience - Expertise in the end-to-end modeling lifecycle, from requirements gathering to monitoring and validation. - Experience in SQL and familiarity with cloud-native environments (e.g., Snowflake, Sagemaker). - Able to communicate effectively with both technical and non-technical audiences. - Able to translate complex technical topics into business solutions and strategies as well as turn business requirements into a technical solution - This role can have a Hybrid work arrangement in one of our hub offices. Candidates who live near one of our office locations will have the expectation of working in an office three days a week (Tuesday through Thursday). Candidates who do not live near an office may be considered for a remote work arrangement with occasional travel. Compensation The listed annualized base pay range is primarily based on analysis of similar positions in the external market. Actual base pay could vary and may be above or below the listed range based on factors including but not limited to performance, proficiency and demonstration of competencies required for the role. The base pay is just one component of The Hartford's total compensation package for employees. Other rewards may include short-term or annual bonuses, long-term incentives, and on-the-spot recognition. The annualized base pay range for this role is: $153,200 - $229,800 Equal Opportunity Employer/Sex/Race/Color/Veterans/Disability/Sexual Orientation/Gender Identity or Expression/Religion/Age About Us | Our Culture | What It's Like to Work Here | Perks & Benefits
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