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Senior frontend developer

Valladolid
Indefinido
FERO
Publicada el 20 agosto
Descripción

Build Seamless Checkout Experiences That Drive Conversion — Join Us in Madrid!

FERO, we’re looking for a

Senior Frontend Developer

to lead the development of a next-generation checkout experience. You’ll design and build performant, user-friendly interfaces in

React, collaborate closely with backend teams, and ensure smooth integrations with e-commerce platforms and APIs that power our product.

Who We Are We're FERO, a high-growth startup reinventing the checkout and payment experience to help our customers increase conversion and revenue. Backed by top-tier VCs, we’re building our future from the heart of Madrid, combining cutting-edge tech with a collaborative, data-driven culture. We offer competitive pay, employee equity, and the chance to make a real difference in an environment that values curiosity, creativity, and impact.

What You'll Do Lead Frontend Development :

Architect and implement modern, responsive checkout experiences using

React, JavaScript, HTML, and CSS. Collaborate Across Teams :

Work closely with backend engineers (PHP / Symfony, Magento, WooCommerce), designers, and product managers to deliver seamless, high-performing user experiences. Integrate Systems :

Connect to backend APIs (REST, GraphQL), payment gateways, and shipping modules to ensure smooth and secure checkout flows. Maintain Quality :

Write clean, testable, maintainable code, applying best practices for performance, accessibility, and security. Optimise for Conversion :

Use data and UX best practices to improve checkout performance and conversion rates. Stay Ahead :

Keep up-to-date with the latest trends in React, frontend tooling, and e-commerce technology.

What We Offer Innovative Environment :

Work on cutting-edge solutions in a greenfield setting. Growth Opportunities :

Join us early and grow with us professionally and personally. Collaborative Culture :

Be part of a friendly, creative, and supportive team. Flexible Work :

Hybrid model - 3 days in office, 2 days WFH. Competitive Compensation :

Great pay, employee equity, and private health insurance partially sponsored by FERO.

Who You Are Experienced Frontend Developer :

5+ years of professional frontend development experience, with deep expertise in React and modern JavaScript. Backend-Aware :

Comfortable working with NodeJS + PHP-based backends and understanding systems like Magento 2 and WooCommerce (not a PHP coder, but you can read and collaborate on backend-related tasks). API Fluent :

Skilled at integrating with REST and GraphQL APIs. E-Commerce Enthusiast :

Familiar with checkout flows, payment system integrations, and UX best practices for e-commerce. Performance & Accessibility Focused :

You know how to build fast and accessible experiences. Collaborative & Proactive :

You enjoy working in a team and aren’t afraid to ask questions or speak up with ideas. Growth Mindset :

Always eager to learn and adapt to new technologies and challenges. Eligible to Work in Spain Fluent in both written and spoken English

Ready to Join Us? Excited to make a difference? Send us your English CV and let's embark on this amazing journey together!

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