Rafael – Node.js, React, AWS

It's a Learning Management System that delivers online courses, postgraduate programs, medical residency exam preparation courses, and degree revalidation programs, providing structured learning paths, video-based content, assessments, and academic resources.

• Built and maintained core platform features and integrations, including video playlists, Salesforce connectors, an internal educational platform, a helpdesk system, and checkout backend services.
• Delivered AI-powered features, including cost-optimization initiatives and developer productivity tools using Generative AI.
• Developed AI agents for the internal learning platform to guide students, surface contextual content, and enhance the overall learning experience.
• Designed and implemented AI workflows and intelligent agents to support multiple roles in the software engineering lifecycle, improving delivery speed and quality.
• Built AI systems with Python, RAG, OpenSearch, LangChain, LlamaIndex, AWS Bedrock, and OpenAI APIs.

It's an AI-powered automation solution that enables companies to automate document-heavy workflows using LLM-powered pipelines and rule-based validation frameworks.

• Designed and implemented a document rule-validation framework for dynamic validation of AI-extracted document data.
• Developed an internal metrics and cost tracking platform to monitor document processing expenses by customer, category, and time.
• Contributed to AI extraction pipelines, building workflows for multiple document types and validation logic.
• Built a full-stack B2B SaaS product using AI agents to parse quotation requests, query databases, and generate structured responses.
• Implemented AI agents and pipelines with Python, LangChain, LangGraph, RAG, query expansion, and reranking for better accuracy.

It's a people management and recruitment platform used by companies to track key HR metrics, including employee satisfaction, hiring processes, performance indicators, and cultural fit.

• Developed an HR management platform for job postings, candidate pipelines, and hiring workflows.
• Managed AWS infrastructure including S3, EC2, RDS, Route53, ELB, CloudFront, CodeBuild, and CodePipeline.
• Designed and maintained CI/CD pipelines and deployment workflows for continuous delivery.
• As sole developer, led end-to-end delivery of two full platforms covering architecture, full-stack implementation, and cloud ops.