[Job-31014] Senior Software Developer

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. At CI&T, we are looking for a Senior Software Developer to join our global team and help design, build, and scale advanced Generative AI and Agentic AI solutions for enterprise clients. This role is ideal for a professional with deep hands-on experience in Generative AI, LLMs, RAG, and agent-based architectures, combined with strong software engineering, cloud, and production-grade AI platform expertise. You will work on the development of secure, scalable, observable, and reliable AI applications that support complex business workflows and large-scale enterprise environments. Key Responsibilities - Design, develop, and maintain GenAI and Agentic AI applications for production environments. - Build customizable agent solutions using frameworks such as LangChain, DeepAgents, Strands AI, or similar Agent SDKs. - Develop production-grade Python tooling and reusable AI components. - Implement RAG pipelines, external knowledge integrations, memory management, and context orchestration strategies. - Design secure sandboxed execution environments for agent tooling, including permissions, secrets management, network restrictions, and auditability. - Build and maintain MCP (Multi-Cloud Platform) tooling, including authentication, schema design, versioning, retries, and safe execution boundaries. - Implement observability, tracing, logging, and monitoring for prompts, tool calls, model performance, latency, and cost optimization. - Create automated evaluation and testing frameworks for AI agents, including golden datasets, regression tests, hallucination detection, and quality gates. - Design human-in-the-loop approval workflows for sensitive or high-risk operations. - Manage prompt versioning, model routing, fallback strategies, and token/cost optimization for enterprise AI systems. - Collaborate with Data, Analytics, Platform Engineering, and business stakeholders to deliver scalable AI solutions aligned with business goals. Required Qualifications - Advanced / Fluent English (C1 or higher), mandatory. - Experience working with international clients and global teams. - Strong hands-on experience with Automation, Generative AI, LLMs, RAG, and agent-based architectures (E.g.: Claude Code, Codex, Cursor, Windsurf) - Proficiency in Python and software engineering best practices. - Experience designing secure, scalable, and production-ready AI systems. Solid understanding of AI model evaluation, deployment, observability, and operational reliability. - Experience with agent execution pipelines, CI/CD integrations, backend AI workflows, and automated orchestration. - Strong knowledge of prompt engineering, context management, hallucination mitigation, and knowledge freshness strategies. - Ability to work autonomously in complex, fast-paced, and ambiguous environments. Nice to Have - Experience with Azure, AWS, or GCP, especially deploying Generative AI solutions in cloud environments. - Familiarity with Databricks, Vertex AI, Azure OpenAI, Amazon Bedrock, or similar enterprise AI platforms. - Experience with Docker, Kubernetes, and containerized AI workloads. Knowledge of MLOps and AI/ML pipeline automation. - Understanding of AI security, governance, compliance, and data privacy regulations. - Certifications related to Generative AI, Machine Learning, Cloud, or AI Engineering. 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 that you deserve. If you do not yet have the assessment, don't worry: we can support you in obtaining it. We have a dedicated Health and Well-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.