Oliver Valls
Esyofacturo.com Co-Founder Facturación Electrónica Con Verifactu at Winds of Scrum
Girona, Catalonia, Spain
Summary
🤩
Rockstar🎓
Top SchoolOliver Valls is a software engineer and serial founder with 11+ years building pragmatic, well-architected web systems—currently co-founding esyofacturo.com to deliver compliant electronic invoicing for freelancers and SMEs. A longtime Ruby on Rails and Java EE specialist, he champions layered architecture, DDD and TDD while leading teams as CTO of CodiTramuntana and authoring Scrum tools like Winds of Scrum. He contributes to notable open-source projects such as decidim, improving back-end features, specs and test coverage, reflecting a focus on quality and maintainability. With supplemental AI and autonomous-vehicle studies at Stanford and Udacity, he blends classical software craftsmanship with an active curiosity in emerging tech. Not obvious from titles: he repeatedly introduces agile practices and developer-first design in organizations, turning architectural principles into maintainable product realities.
11 years of coding experience
9 years of employment as a software developer
Artificial Intelligence, Artificial Intelligence at Stanford UniversitySelf-Driving Car Engineer Nanodegree Robotics and AI applied to Self-Driving Cars, Self-Driving Car Engineer Nanodegree Robotics and AI applied to Self-Driving Cars at UdacityUOC (Universitat Oberta de Catalunya)BUP, BUP at IES Ramon MuntanerBachelor Business administration, Bachelor Business administration at Universitat de Girona
Catalan, Spanish, English, French, Portuguese
Github Skills (7)
rspec10
rails10
back-end-development10
ruby-on-rails10
ruby10
version-control7
git7
Programming languages (6)
Github contributions (5)
decidim/decidim
Dec 2017 - Sep 2022
The participatory democracy framework. A generator and multiple gems made with Ruby on Rails
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 releases, 391 reviews, 326 commits in 4 years 9 months
Contributions summary:Oliver primarily contributed to the implementation and refinement of the proposal withdrawing feature. Their work included writing specifications for the withdrawal commands, implementing the necessary controller actions and view elements, and modifying the models to support the new functionality. The user also performed code reviews and made improvements in code quality and coverage, including fixing code style and tests.
ruby-on-railsdecidimdemocracygovernmentcivic-tech
CodiTramuntana/decidim-module-survey_results
Jun 2022 - Nov 2023
A Decidim module that enables the admins to show survey results to participants though a new survey results page.
Contributions:4 reviews, 6 PRs, 22 pushes in 1 year 5 months
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