Freelancer profile translated to English.

Description

I am a Senior Ruby on Rails Engineer with over 10 years of experience building and maintaining products in SaaS, fintech, and high-traffic platforms.

I work primarily on backend, APIs, and complex business logic, with a clear focus on technical quality, performance, and product sustainability. I have extensive experience modernizing legacy platforms, reducing technical debt, and improving critical processes without slowing down the business.

I integrate easily into product teams and collaborate closely with PM, design, and business, contributing technical vision but also product judgment. I am accustomed to taking on end-to-end ownership, from analysis to production deployment.

Usual technologies:

• Ruby on Rails, PostgreSQL, Redis

• REST APIs, complex integrations

• TDD / RSpec, refactoring, performance

• JavaScript / Stimulus

• Cloud environments and modern deployments

I currently work as a freelancer, collaborating with companies that need a senior, autonomous, and reliable profile, whether for occasional reinforcements, medium-term projects, or modernization of existing systems.

I am looking for projects where I can add real value, with teams that care about the product and technical quality.

Languages

Spanish
Native or bilingual
English
Fluent
Catalan
Conversational

Workplace preferences

Can work on-site

Sabadell (up to 50km)

autonomo
Senior Ruby on Rails Engineer / Consultant
SOFTWARE PUBLISHING
October 2023 - Today (2 years and 8 months)
Sabadell, CT, Spain
Mainly backend focus, with special attention to API design, system reliability, and legacy code refactoring, including Rails upgrade processes.
Collaborations in sectors such as logistics and the chemical industry, working closely with product stakeholders to deliver pragmatic and maintainable solutions.
External API Integration Back-End Development Process Automation Hotwire Stimulus
Platoniq Foundation
Ruby on Rails Engineer
PUBLIC SECTOR
October 2023 - December 2023 (2 months)
Barcelona, Spain
Development of the Open Source Decidim application, as well as update and maintenance tasks for several of its installations.
Kantox
Senior Backend Engineer
January 2021 - September 2023 (2 years and 8 months)
Barcelona, Spain
Work on core backend systems within a fintech environment, with a special focus on payments and critical financial flows. Participation in the maintenance and evolution of long-running Ruby on Rails applications, including legacy code refactoring and Rails upgrade processes. Focus on improving system reliability, maintainability, and code quality in key production services. Close collaboration with product teams and other stakeholders in a cross-functional environment, taking on end-to-end ownership of backend functionalities.