Data Scientist

Come to one of the biggest IT Services companies in the world!! Here you can transform your career! Why to join TCS? Here at TCS we believe that people make the difference, that's why we live a culture of unlimited learning full of opportunities for improvement and mutual development. The ideal scenario to expand ideas through the right tools, contributing to our success in a collaborative environment.

We are looking for a Data Scientist with a strong focus on Generative AI, capable of designing, developing, and evolving solutions based on LLMs, intelligent agents, and cognitive automations. This professional will work in the creation of agent architecture, integration with corporate data, construction of automated service and decision support flows, in addition to the continuous experimentation of generative models applied to real business problems.

The role requires a combination of data science, applied engineering, prompt engineering, RAG, and agent orchestration, with practical insight into how to scale GenAI solutions in a secure, governed, and measurable way.

Responsibilities

Design and implement Generative AI solutions based on LLMs for customer service, operational support, and process automation.

Develop and orchestrate AI agents (single-agent and multi-agent), with decision-making, planning, and task execution capabilities.

Build RAGE (Retrieval-Augmented Generation) pipelines by integrating LLMs into structured and unstructured foundations.

Develop and optimize prompts, chunking strategies, embeddings, and semantic retrieval.

Integrate agents and generative models with automation workflows, APIs, legacy systems, and fulfillment platforms.

Evaluate quality, safety, and performance of GenAI solutions (hallucination, groundedness, latency, cost).

Apply statistical and machine learning concepts for evaluation, experimentation, and continuous improvement of solutions.

Work together with data, engineering, product, UX, and business teams to evolve solutions.

Support the definition of standards, good practices, and governance for the use of Generative AI in a corporate environment.

Hard Skills

Solid experience with Generative AI and LLMs (OpenAI, Azure OpenAI, Anthropic, Google, or equivalent).

Development of AI agents and orchestration frameworks (e.G., LangChain, LangGraph, CrewAI, Semantic Kernel or similar).

Hands-on experience with RAG, embeddings, vectors, and vector bases.

Strong Python domain and integration via APIs.

Knowledge in Machine Learning and fundamentals of applied statistics.

Experience with intelligent automations and integration with corporate systems.

Knowledge of cloud architecture (Azure, AWS or GCP).

Notions of MLOps / LLMOps (versioning, monitoring, evaluation and costs).

Soft Skills

Experimental and innovation-oriented mindset.

Ability to transform business problems into solutions with agents and GenAI.

Clear communication with technical and executive stakeholders.

Autonomy, sense of ownership and continuous learning.

Collaboration in multidisciplinary teams.

Differentials

Experience with corporate copilots, advanced chatbots, and virtual assistants.

Experience in customer service automation or Backoffice projects with AI.

Knowledge in AI governance, security, and ethics.

Experience with advanced LLM evaluation (A / B testing, human feedback, custom metrics).

Previous experience in regulated environments (banking, insurance, health, energy).

What can you expect from us?

• Professional development and constant evolution of your skills, always in line with your interests.
• Opportunities to work outside Brazil
• A collaborative, diverse and innovative environment that encourages teamwork.

What do we offer?

• TCS Benefits – Brazil :
• Health insurance
• Dental Plan
• Life insurance
• Transportation vouchers
• Meal / Food Voucher
• Childcare assistance
• Gympass
• TCS Cares – free 0800 that provides psychological assistance (24 hrs / day), legal, social and financial assistance to associates
• Partnership with SESC
• Reimbursement of Certifications
• Free TCS Learning Portal – Online courses and live training
• International experience opportunity
• Discount Partnership with Universities and Language Schools
• Bring Your Buddy – By referring people you become eligible to receive a bonus for each hire
• TCS Gems – Recognition for performance
• Xcelerate – Free Mentoring Career Platform

At TATA Consultancy Services we promote an inclusive culture, we always work for equity. This applies to Gender, People with Disabilities, LGBTQIA+, Religion, Race, Ethnicity. All our opportunities are based on these principles. We think of different actions of inclusion and social responsibility, in order to build a TCS that respects individuality. Come to be a TCSer!