Master AI / Machine Learning Specialist

We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.

With over 8,000 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.

==> Only CV in English will be consider

==> Only Fluent English - C1 or higher speakers will be consider (you´ll have a lot of interaction with clients and stakeholders in US daily).

==> 100% remote

About the Project

We are building an AI-powered media planning platform that transforms highly manual and expert-dependent workflows into an intelligent conversational experience.

The solution leverages a multi-agent architecture orchestrated through AWS Bedrock to guide users across complex campaign planning processes, integrating real-time enterprise data and generating mathematically optimized media proposals.

The platform combines:

• Agentic AI architectures
• Retrieval-Augmented Generation (RAG)
• Mathematical optimization engines
• Enterprise system integrations
• Workflow automation from opportunity discovery to campaign activation

This is a high-impact initiative focused on building scalable, production-grade AI systems using modern AWS AI/ML services.

Role Overview

As a MASTER AI / Machine Learning Specialist, you will be responsible for designing and implementing the agentic intelligence layer of the platform.

You will architect and develop specialized AI agents capable of collaborating across complex planning workflows, integrating enterprise tools and data sources while ensuring scalability, observability, governance, and production reliability.

This role requires deep hands-on expertise in AWS Generative AI services, multi-agent systems, orchestration patterns, prompt engineering, and production ML operations.

Key Responsibilities

• Design and implement multi-agent AI architectures using AWS Bedrock
• Develop agent orchestration logic and collaborative agent workflows
• Configure and manage AWS Bedrock Agents, Knowledge Bases, and Guardrails
• Build Retrieval-Augmented Generation (RAG) pipelines using vector databases and embeddings
• Implement tool integrations using Model Context Protocol (MCP) and API-based services
• Optimize LLM behavior through prompt engineering, tuning, and context management
• Develop observability and monitoring strategies for AI workflows using CloudWatch and X-Ray
• Build scalable event-driven architectures and resilient integration patterns
• Design error handling, retry strategies, and graceful degradation mechanisms
• Collaborate with engineering, product, and architecture teams to deliver production-grade AI solutions
• Support infrastructure automation and deployment pipelines using IaC and CI/CD practices
• Ensure governance, security, auditability, and compliance standards across AI systems

Must Have Qualifications

• Proven experience building production AI/ML systems on AWS
• Strong hands-on expertise with AWS Bedrock Agents (AgentCore)
• Experience designing multi-agent systems and agent orchestration workflows
• Experience with AWS Bedrock Knowledge Bases (RAG), vector embeddings, and OpenSearch Serverless
• Expertise with AWS Bedrock Guardrails, including PII protection and content governance
• Experience implementing tool calling, function invocation, and state management
• Strong prompt engineering and LLM optimization experience
• Deep understanding of AWS observability tools:  CloudWatch,  X-Ray,  Distributed tracing
• Experience with:  API Gateway,  DynamoDB,   Event-driven architectures
• Familiarity with Infrastructure as Code:  Terraform,  AWS CDK
• Strong knowledge of RESTful APIs and integration patterns
• Experience with CI/CD pipelines for ML and AI systems
• Ability to design resilient and fault-tolerant AI applications
• Strong communication, collaboration, and technical documentation skills

Nice to Have

• Experience with Model Context Protocol (MCP)
• Experience with AWS Step Functions for workflow orchestration
• Familiarity with: CloudFront, S3, AWS WAF
• Knowledge of conversational AI UX patterns and hybrid interaction models
• Experience with session persistence and conversation state management
• Understanding of compliance and governance requirements:  PII handling,  Audit trails,  Data retention
• Experience optimizing AWS Bedrock and OpenSearch operational costs
• Familiarity with LLM evaluation frameworks and AI quality metrics
• Experience with multi-turn dialogue management and context preservation
• Knowledge of explainability and AI reasoning visualization techniques

Preferred Profile

We are looking for someone who:

• Has strong ownership and autonomy
• Is proactive and solution-oriented
• Can operate effectively in ambiguous and fast-paced environments
• Communicates clearly with both technical and non-technical stakeholders
• Has a product mindset and business-oriented thinking
• Demonstrates urgency, accountability, and collaboration
• Enjoys building scalable AI platforms from the ground up

Technology Stack

AWS Bedrock | AgentCore | RAG | OpenSearch | DynamoDB | API Gateway | Lambda | Step Functions | CloudWatch | X-Ray | Terraform | CDK | Python | MCP | CI/CD | Docker | Event-Driven Architecture

Why Join Us

• Opportunity to build cutting-edge enterprise AI solutions
• Work with modern agentic AI architectures and AWS GenAI ecosystem
• High visibility and strategic impact project
• Collaborative and innovation-driven environment
• Opportunity to shape the future of AI-powered workflow automation

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.