Summary
Alberto Caballero is a Senior Backend Developer with over a decade of experience building high-throughput APIs and services, particularly in AdTech and SaaS. He specializes in PHP/Symfony, Node.js, DDD and Hexagonal Architecture, and pairs backend expertise with hands-on React/Next.js frontend work. At Tappx he optimized an SSP handling ~5,000M daily requests and led algorithm changes that increased daily revenue fourfold, and at Nido he built a JSON-driven dynamic forms system that cut form development time from a day to an hour. Comfortable with Kafka, Redis, Docker and CI/CD, he also crafts tooling for safer local testing and deployment of critical systems. A natural mentor and team player, he balances shipping measurable business impact with improving developer workflows and onboarding. Based in Tarragona, Spain, he looks for projects where scalability and real-world optimization matter.
11 years of coding experience
13 years of employment as a software developer
Ciclo superior en Desarrollo de Aplicaciones Informáticas Desarrollo de aplicaciones web, Ciclo superior en Desarrollo de Aplicaciones Informáticas Desarrollo de aplicaciones web at I.E.S Juan Bosco