João Vitor Andrade Estrela

I’m a Senior AI/ML-focused Software Engineer and Tech Lead with 6+ years building production AI systems at scale. I’ve led architecture and delivery for AI products serving 250,000+ paying users, turning ambiguous product needs into reliable, latency-aware AI workflows.

In my current role, I own AI systems, cloud infrastructure, backend services, frontend delivery, and DevOps workflows. I build production LLM orchestration across multiple providers with fallback strategies, tool-calling patterns, and agent-based workflows, and I implement RAG pipelines with embeddings, reranking, cross-encoder models, and vector search to improve retrieval quality.

I also focus heavily on engineering fundamentals—migration and performance work (including PostgreSQL optimization on Amazon RDS), infrastructure automation with Terraform/Terragrunt/ArgoCD/Kubernetes, and system refactors to reduce latency and harden platform resilience. I mentor engineers, review architecture, set coding standards, and collaborate across product and leadership to deliver dependable AI outcomes.