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 Senior Python Developer, who wants to learn and transform his career.In this role you willBackend & APIsDesign and develop RESTful APIs in Python (FastAPI or Django REST Framework) to support operational workflows and result tracking.Model and manage relational databases (PostgreSQL) with emphasis on auditability, traceability, and historical integrity.Ensure performance, security, and scalability of backend services.Integrate with external systems through third‑party APIs.AI Agents & LLMsIntegrate LLM providers (OpenAI, Anthropic, etc.) to support operational decision‑making.Implement RAG pipelines (Retrieval‑Augmented Generation) over operational histories.Ensure explainability, governance, and traceability of AI‑generated recommendations.Data EngineeringBuild ETL/ELT pipelines for ingestion and transformation of operational data.Define and maintain data models (entities such as opportunities, strategies, market parameters).Support analytics stakeholders with structured data for dashboards and strategic reporting.Ensure data quality, consistency, and governance across datasets.Mandatory SkillsStrong experience with Python backend frameworks (FastAPI, Flask, or Django).Experience with relational data modeling, ETL/ELT pipelines, and advanced SQL.Hands‑on experience integrating LLMs and AI agent frameworks (LangChain, LangGraph, AutoGen).Solid understanding of REST API design and software engineering best practices.Experience with PostgreSQL.Ability to read and work with technical documentation in English.Desirable SkillsExperience in the energy sector, especially power markets, free market (ACL), or trading desks.Knowledge of orchestration tools such as Prefect, Airflow, or Temporal.Experience with Vector Databases such as Pinecone, Weaviate, or pgvector.Experience with observability tools (Logs, Metrics, Tracing).Contributions to open-source AI or Data projects.>>>What do we offer?TCS Benefits – Brazil:Health insuranceDental PlanLife insuranceTransportation vouchersMeal/Food VoucherChildcare assistanceTotalPassTCS Cares – free 0800 that provides psychological assistance (24 hrs/day), legal, social and financial assistance to associatesPartnership with SESCReimbursement of CertificationsFree TCS Learning Portal – Online courses and live trainingInternational experience opportunityDiscount Partnership with Universities and Language SchoolsBring Your Buddy – By referring people you become eligible to receive a bonus for each hireTCS Gems – Recognition for performanceXcelerate – Free Mentoring Career PlatformTata Consultancy Services is an equal opportunity employer, our commitment to diversity & inclusion drives our efforts to provide equal opportunity to all candidates who meet our required knowledge & competency needs, irrespective of any socio-economic background, race, color, national origin, religion, sex, gender identity/expression, age, marital status, disability, sexual orientation or any others. We encourage anyone interested to build a career in TCS to participate in our recruitment & selection process.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!