Alejandro Alastrué - Senior Frontend Engineer at Pleo

Alejandro Alastrué

Senior Frontend Engineer at Pleo

Zaragoza, Aragon, Spain

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Summary

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Rockstar

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Top School

Alejandro Alastrué is a senior frontend engineer with 12 years of full-stack experience, currently leading frontend initiatives at Pleo after recent senior roles at Hypothesis and adidas. He combines hands-on TypeScript and Preact frontend work—migrating complex UI components and improving accessibility—with backend experience in Node.js, PHP and cloud-native systems. Alejandro is an active open-source maintainer and founder of Shlink, and has contributed notable improvements to popular projects like cocur/slugify and the Hypothesis client. He has a proven track record of shaping product architecture, building developer-friendly tooling and driving cross-team initiatives such as microfrontends and observability. Based in Zaragoza, he pairs pragmatic engineering with mentoring and team leadership, previously managing a five-person team at adidas while continuing to ship code. An eclectic technologist, he often bridges frontend UX, backend services and DevOps in the same project.

12 years of coding experience

14 years of employment as a software developer

Técnico Superior en Desarrollo de Aplicaciones Informáticas Informática, Técnico Superior en Desarrollo de Aplicaciones Informáticas Informática at Colegio Montessori

English, Spanish

Github Skills (19)

typescript10

regular-expression10

php10

typescript-types10

preact10

typescripts10

frontend10

react10

testing9

javascript9

markdown9

unit-testing9

symfony9

symfony-ux9

markdown-it9

Programming languages (16)

MDXJavaC++CMakefileScalaGoMustache

Github contributions (5)

hypothesis/client

Jan 2023 - Jan 2023

The Hypothesis web-based annotation client.

Role in this project:

Front-end Developer

Contributions:855 reviews, 19 commits, 944 PRs in 17 days

Contributions summary:Alejandro primarily focused on migrating various components to TypeScript within the Hypothesis client repository. Their work involved converting components like `AnnotationEditor`, `AnnotationView`, `AnnotationUser`, and others to TypeScript, improving the codebase's type safety and maintainability. The user also updated and implemented features to include the markdown editor. These commits demonstrate a strong focus on improving the frontend architecture and developer experience.

javascriptweb-basedannotationfrontend

cocur/slugify

Sep 2014 - Nov 2014

Converts a string to a slug. Includes integrations for Symfony, Silex, Laravel, Zend Framework 2, Twig, Nette and Latte.

Role in this project:

Back-end Developer

Contributions:20 commits in 1 month

Contributions summary:Alejandro significantly contributed to the `cocur/slugify` PHP library. They focused on enhancing the core functionality by adding features such as the ability to set a custom regular expression for slug sanitization. The user also implemented unit tests to ensure the robustness of the added features and refactored existing code to improve maintainability. Furthermore, the user expanded the project's ecosystem by creating a ZF2 bridge.

stringtwig-extensionbundlelattezend-framework

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