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What I built and my contribution to each team.

Work / What I built and how03

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01Auth EngineCore Banking · itti — Ueno Bank2025 — Present

My contribution

At itti, I work on authorizations, roles and permissions. This project is the authorization engine for Ueno Bank's business payments: every corporate payment passes through it before execution, under configurable approval schemes. I've been on it since day one — defining the architecture, decoupling critical logic out of a legacy stored procedure, and wiring synchronous and asynchronous flows over SNS and SQS. Shipped end to end, from backend to mobile, with 600,000+ authorization requests processed since launch.

Architecture · Legacy migration · Service integration · Launch

600,000+ authorization requests processed since launch.

  • Kotlin
  • Java
  • Golang
  • PostgreSQL
  • TypeScript
  • Flutter
  • New Relic
  • Braze
  • Amplitude
02Registro ÚnicoEvent-Driven Platform · Hiberus — El Corte Inglés2024 — 2025

My contribution

A centralized registry for customer records, consents and preferences at one of Spain's largest retailers. Event-driven microservices decoupled through Kafka topics, with metrics and distributed tracing via Prometheus, Grafana and Zipkin — cutting incident detection and resolution time by 25%. CI/CD automated with Bitbucket Pipelines and Docker, and complex MongoDB flows validated with Cucumber integration tests.

Microservices · Observability · CI/CD · Integration testing

25% reduction in incident detection and resolution time.

  • Java
  • Spring Boot
  • Kafka
  • MongoDB
  • PostgreSQL
  • Docker
03NomenclatorFormer Project · Co-founder · AI & Automation2026

My contribution

I co-founded Nomenclator, an AI-powered platform that automates NCM tariff classification for imports and exports across MERCOSUR. I worked on product definition, full-stack development and AI integration, turning technical sheets into tariff codes with a confidence score, regulatory justification and audit trail. The project won second place at HackITBA 2026 in the AI & Automation category. I am no longer part of the project.

Co-founder · Product definition · Full-stack development · AI integration

Second place at HackITBA 2026 in the AI & Automation category.

  • Next.js
  • TypeScript
  • Supabase
  • LLMs
  • PostHog
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