Francisco Barros

Owned delivery of the WhatsApp product from Metap partnership application through full-stack implementation using WhatsApp Cloud API, enabling real-time guest messaging and staff handoff across 50+ hotels. Built an email automation product end to end integrating Gmail API, Microsoft Graph, IMAP/SMTP, and Google Cloud Pub/Sub to automate guest communications. Re-architected a core RAG pipeline in TypeScript/Node.js using M istra, splitting processing into jobs with independent retries, failure isolation, progress tracking, and parallel execution for a platform serving 350+ hotels and over one million conversations.

Reduced total monthly infrastructure costs by 50% by migrating EC2-hosted workloads to serverless AWS services. Delivered a full-stack CRM and campaign platform with Next.js, Express, and PostgreSQL, linking payment processor transactions to customer purchase histories for campaign attribution and performance reporting. Built GitHub Actions CI/CD pipelines for applications running on AWS ECS and Lambda, with infrastructure managed through AWS CDK. Built AWS Glue and Athena data pipelines to centralize reporting data for payment, transaction, and customer data used by the business analytics team. Used OpenTelemetry and SigNoz for observability across applications and microservices.

Led refactoring of a customer-facing booking cart and moved checkout logic server-side to support order continuation across browsers and devices. Centralized fee calculations, sped up checkout, and reduced steps. Refactored staff and event-producer CRMs by consolidating shared logic across multiple applications. Built reusable React and Material UI components shared across CRMs and customer-facing application.