Javier Alfonso
Principal Engineer at Spotahome
Rivas-Vaciamadrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolJavier Alfonso is a Principal Engineer with nine years of experience building web applications and shaping backend and full-stack systems, currently leading architecture and delivery at Spotahome. He favors clean, readable code and applies Domain-Driven Design and Hexagonal Architecture to tame complexity in event-driven, distributed systems. Having progressed from developer to technical lead, he blends hands-on implementation with people management and Agile team leadership. Javier’s background spans startups and scale-up environments, with early work in web platforms, automation and SME tooling that informs a pragmatic, product-focused engineering approach. Notably, he pairs deep backend expertise with an eye for testable, modular design that helps teams iterate safely at scale.
9 years of coding experience
11 years of employment as a software developer
Charles III University of Madrid (Universidad Carlos III de Madrid)
English, Spanish
Github Skills (109)
integrations10
bundle10
cli10
symfony-bundle10
symfony10
stripe10
release-management10
php10
jsonwebtoken9
ai9
payment9
php-framework9
productivity-tools9
mosaic9
stripe-api9
Programming languages (8)
Github contributions (5)
javespi/test-doubles
Dec 2019 - Sep 2022
Workshop of Test Doubles using PHP Unit and Pest
Contributions:1 review, 24 PRs, 30 pushes in 2 years 9 months
workshoptestingphpphp-unitunit
javespi/microservice
Dec 2019 - Jan 2020
Async microservice in PHP
Contributions:36 commits, 3 PRs, 16 pushes in 23 days
phpmicroserviceasync
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