Looking for a job

Matias Rinaldo

@matiasrinaldo

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I build full-stack applications with Ruby on Rails, React, Java, Spring Boot, and PostgreSQL.

Argentina

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What I'm looking for

I'm looking to take the next step at a large-scale company, joining a collaborative, dynamic team working on high-impact projects where I can learn from experienced professionals and take on new challenges.

I've delivered production backend and frontend features at Amalgama using Ruby on Rails and React for training analysis, client management, and report generation.

I integrated OpenAI and external fitness APIs, automated workflows with Solid Queue, Active Job, and AWS SES, and implemented JWT authentication, role-based access, and business rules while working directly with a US-based client.

I'm completing Computer Engineering at ITBA and have built FixIt and Kaigi, applying Java, Spring Boot, PostgreSQL, Docker, React Native, Next.js, AWS, and external APIs to practical workflows.

Experience

Work history, roles, and key accomplishments

Full-Stack Developer

Amalgama

Dec 2024 - Aug 2025 (8 months)

Developed and delivered backend and frontend features using Ruby on Rails and React, translating business requirements into production-ready solutions for training analysis, client management, and report generation. Integrated the OpenAI API and an external fitness API through REST endpoints and PostgreSQL models, and automated workflows and report delivery using Solid Queue, Active Job, and AWS S