./Experience

1. 2022–present

   Telefónica Kernel · Open Gateway

   Backend Engineer — Microservicios & Automatización

   • Design and evolution of REST microservice adapters for Open Gateway.
   • Author of a 12+ tool Python CLI suite operating ~90 adapters across 4 countries.
   • Automatic OpenAPI (Swagger v2/v3) code generation and CI-integrated docs & diagrams.
   • Java
   • Spring Boot
   • Python
   • Kafka
   • CI/CD

2. Jan–May 2026

   Axpe Consulting / Mapfre

   Software Engineer — API Modernization

   • Drove the tech-modernization analysis of 39 corporate APIs to Node.js 24.
   • Homogenized the stack and reduced technical debt across the API estate.
   • Node.js 24
   • TypeScript
   • REST

3. 2020–2022

   Zitro Laboratory

   Java Backend Engineer

   • Maintenance and evolution of the Java server of the betting engine, Backoffice and online-casino integrations.
   • Server-to-server sign-in, AWS Snowflake + Cassandra historicals, OneSignal integration.
   • Java
   • Spring
   • AWS
   • Cassandra
   • Snowflake

4. 2017–2020

   Attendre S.L.

   Java Backend Developer

   • Evolution of Attend® (tickets/inventory/projects) and License Manager (Spring Boot 2.3 + REST).
   • Java
   • Spring Boot
   • REST