Luiz Dubi Couto

Architecting the Future: Enterprise AI & Cloud Innovations

Independent AI & Cloud Solutions Architect delivering cutting-edge LLMs, RAG systems, and digital transformations for global enterprises. Passionate about coding, exploring the latest technologies, and pioneering product development. Eager to contribute to forward-thinking projects with a focus on cloud, AI and edge computing.

Founder at NetCartas, Ex-IBM, Ex-Santander

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Recent Consulting

WallJobs

Developed an advanced AI Interviewer system to streamline recruitment processes. Created an autonomous AI Agent to source candidates and orchestrate interview scheduling, significantly reducing hiring timelines across hundreds of applicants.

Brazil Paralelo

Guided the internal team in implementing state-of-the-art technologies for their AI Sales Agent, enhancing customer engagement and conversion rates through advanced conversational AI.

SBCredit & SBCash

Designing AI-powered customer support architecture to enhance query resolution efficiency. Focus on intelligent automation and natural language processing to scale support operations while maintaining personalized interactions.

Featured Projects

Kontato AI

  • Advanced AI customer service platform with custom RAG
  • Company-specific knowledge integration
  • Built with LLMs, RAG, Node.js, AWS Lambda, GraphQL with DynamoDB, Step functions, SQS

NetCartas Platform

  • Cloud-native gaming and payments platform
  • Real-time transaction processing
  • Built with AWS, Node.js, HTML5 and Pure JavaScript

Pipeu Headless eCommerce

  • Enterprise-grade headless eCommerce platform
  • Serverless architecture with real-time inventory
  • Built with AWS, Next.js, AWS RDS, Redis

Technical Expertise

AI & Cloud

  • Large Language Models & RAG Systems
  • AWS Expert (since 2011) with deep knowledge in:
  • • Compute & DB: EC2, RDS, DynamoDB
  • • Serverless: Lambda, API Gateway, AppSync
  • • Message & Workflow: SQS, Step Functions
  • • CDN & DNS: CloudFront, Route53
  • • Security & IAM, S3, PinPoint, SES
  • Cloudflare Stack:
  • • Pages, Workers, Durable Objects
  • • D1 and Vectorize

Development

  • Java & JavaScript/TypeScript (22 years)
  • Node.js & Modern Frameworks
  • Distributed Systems
  • API Design & Implementation

Domain Knowledge

  • Payments
  • Distributed Applications
  • Multiplayer Gaming
  • E-commerce
  • Marketing Automation
  • Customer Service

Latest Posts

Taming AI Hallucinations: Practical Lessons from Building Real-World Customer Support AI Agent

Feb 2025

Unlocking Productivity with AI Agents: The Next Frontier in Work Automation

Jan 2025

Building a Scalable Real-Time Chat System with AWS AppSync and Lambda Authentication

Jan 2025

Experience

2023 - Present

Independent AI Consultant

Specializing in LLMs, RAG systems, and AI agents for enterprise clients.

2019 - Present

Board Member

Strategic advisor for technology companies including Vindi (payments), Mundo do Marketing (marketing), and WallJobs (recruitment).

2018 - 2023

Founder @ Pipeu

Built enterprise headless eCommerce platform with advanced cloud infrastructure and microservices architecture.

2007 - Present

Founder @ NetCartas

Gaming & Payments Platform with focus on cloud infrastructure and real-time transactions.

2005 - 2007

Senior Developer @ Citi

2003 - 2005

Software Engineer @ IBM

2002 - 2003

Developer @ Santander