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.
10 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 (80)
automation10
docker-container10
php-cs-fixer10
bundle10
cli10
symfony10
php10
redis-client9
no-code9
jsonwebtoken9
m3u9
ai9
php-framework9
stripe-api9
apcu9
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/javespi.github.io
Jan 2019 - Jun 2023
My personal site
Contributions:4 PRs, 16 pushes, 3 branches in 4 years 6 months
reactnextjs
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