Open to opportunities

Andrés Arguindegui

@andrsarguindegui

Message

Backend Java Developer building scalable microservices and REST APIs for high-traffic systems.

Argentina

Message

What I'm looking for

I’m looking for a role where I can build reliable, high-performance backend architectures—scalable microservices, REST APIs, and distributed systems—while contributing to mobile experiences when it adds real value.

I’m a Backend Java Developer with production experience building scalable microservices and REST APIs serving 50,000+ users per event. I develop reliable, high-performance backend architectures using Java, Spring Boot, GraphQL, RabbitMQ, and relational databases like PostgreSQL and MySQL.

I also ship mobile applications independently—using Flutter and Dart with BLoC—covering architecture to deployment, offline-first sync, and push notifications. From transactional logic with atomic rollbacks to message-driven data fetching, I’ve managed distributed systems end-to-end for real clients, including River Plate.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

América Virtual SA

Jul 2025 - Present (9 months)

Developed Java/Spring Boot microservices and REST APIs for Ourclub ticketing, supporting 50,000+ attendees per event with parameter validation and centralized error handling. Built River Plate internal management and an offline-first ticket validation system using transactional PostgreSQL and MySQL-backed offline sync.

Java Spring Boot REST APIs GraphQL RabbitMQ Microservices PostgreSQL MySQL Transaction Management Offline First

Freelance Flutter Developer

Upwork

Aug 2025 - Mar 2026 (7 months)

Built Spanish5000, an AI-powered language learning app, end-to-end from architecture to deployment with BLoC state management, offline-first sync, in-app payments for iOS/Android, and push notifications. Integrated Cloudflare tunnel connectivity and shipped the mobile app via Google Play.

Flutter Dart BLoC Offline First Push Notifications App Architecture