Javier Villanueva

Senior Backend Engineer · AI Engineering

Senior Backend Engineer with 20 years of experience, the last 4 in travel tech.

Specialized in PHP backend with DDD/CQRS architectures and a high-availability stack: Kafka, ClickHouse, PostgreSQL, Kubernetes.

Co-founder and CTO for 8 years of a digital marketing agency, where I built proprietary attribution and measurement software at scale.

Currently exploring agentic AI systems, multi-agent architectures, and Claude Code applied to real domain problems.