At CI\&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI\-native execution, and tech\-integrated business solutions. With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data \& AI, Martech and Business strategy. We are 8,000 CI\&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day. We are looking for a Senior AI Engineer to join a delivery team building Generative AI and Agentic AI solutions for a global enterprise client. You will help shape and deliver AI solutions from discovery to production, combining strong software engineering foundations with modern AI capabilities. The role involves hands\-on work with RAG, AI agents, enterprise integrations, intelligent workflows, evaluation, observability, and cloud environments. ### **What you will do:** * Own AI solutions from technical discovery through production and continuous improvement. * Design and evolve Generative AI, RAG, and agentic applications. * Define technical approaches considering quality, scalability, security, cost, maintainability, and operational impact. * Design agents and workflows that interact with tools, APIs, databases, messaging systems, and enterprise platforms. * Define orchestration patterns such as Human\-in\-the\-Loop, long\-running workflows, retries, fallback strategies, and deterministic controls. * Establish evaluation, observability, guardrails, and reliability practices for AI applications. * Guide model, retrieval, framework, and infrastructure choices based on technical trade\-offs. * Troubleshoot complex production issues involving models, prompts, retrieval, tools, integrations, and infrastructure. * Collaborate with architects, engineers, product teams, and business stakeholders, providing technical guidance when needed. * Support other engineers and contribute to engineering standards and best practices for AI solutions. ### **Must\-have:** * Strong Python development skills and solid software engineering foundations. * Proven ability to design and deliver production\-grade Generative AI and LLM\-based solutions. * Deep knowledge of software design principles, including modularity, separation of concerns, testability, maintainability, resiliency, and clean interfaces. * Ability to design services, APIs, asynchronous workflows, and distributed components for production environments. * Hands\-on knowledge of RAG and agentic AI patterns, including tool use, function calling, orchestration, Human\-in\-the\-Loop, and guardrails. * Strong understanding of embeddings, vector search, retrieval strategies, chunking, reranking, and enterprise knowledge retrieval. * Proficiency with AI frameworks or SDKs such as LangGraph, LangChain, Semantic Kernel, LlamaIndex, OpenAI Agents SDK, Strands, or similar. * Practical knowledge of multiple LLM providers such as OpenAI, Anthropic Claude, Google Gemini, Azure OpenAI, AWS Bedrock, or similar. * Ability to assess trade\-offs between models, providers, orchestration approaches, retrieval strategies, and infrastructure options. * Strong knowledge of AI evaluation and observability, including quality, tracing, latency, token usage, failures, and cost. * Good understanding of cloud\-native practices such as scalability, resiliency, secrets management, configuration management, observability, and access control. * Strong working knowledge of Docker, CI/CD, automated testing, and version control. * Fluent English for technical discussions with international stakeholders. ### **Nice\-to\-have:** * Knowledge of multi\-agent systems and long\-running agent workflows. * Background in Agentic SDLC, coding agents, GitHub, or developer tooling integrations. * Familiarity with knowledge graphs, GraphRAG, or hybrid retrieval architectures. * Hands\-on knowledge of Datadog LLM Observability, LangSmith, OpenTelemetry, or similar platforms. **Our benefits:** * Health and dental insurance * Meal and food allowance * Childcare assistance * Extended paternity leave * Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass; * Profit Sharing and Results Participation (PLR); * Life insurance * Continuous learning platform (CI\&T University); * Discount club * Free online platform dedicated to physical, mental, and overall well\-being * Pregnancy and responsible parenting course * Partnerships with online learning platforms * Language learning platform And many more! More details about our benefits here: https://ciandt.com/br/pt\-br/carreiras At CI\&T, inclusion starts at the first contact. If you are a person with a disability, it is important **to present your assessment during the selection process.** *See which data needs to be included in the report by* *clicking here*.This way, we can ensure the support and accommodations