Nickolas Melo

I’m a Full-Stack Developer building production SaaS platforms with full-stack autonomy, from backend architecture and database optimization to frontend interfaces and automation pipelines. At Aggressive Solutions, I led the end-to-end infrastructure for LeadStats (call center analytics and CRM) and operate with independent production deployment access for debugging and incident resolution.

I’ve also built a reporting and data analysis foundation (timezone-aware scheduling, robust execution logging, and failure recovery), and delivered AI features like a RAG-powered in-app support chatbot (NestJS + LlamaIndex + pgvector) with RBAC-filtered retrieval and tool calling. I improved performance by reducing query time from 10+ minutes to ~33 seconds, fixed a critical data corruption issue impacting 800k+ leads, and automated a PDF policy pipeline using OCR and LLM parsing with guardrails, validations, and monitoring.