About FERO FERO is reinventing checkout for eCommerce. We build high-performance, adaptive checkout experiences that help merchants increase conversion and revenue. Backed by top-tier VCs, we’re building from Madrid with a strong focus on performance, data, and real impact. About the role We’re looking for a Product Engineer to join our Engineering team. You’ll help build and improve our next-generation checkout experience, working across our WooCommerce checkout plugin and Magento checkout module. You’ll develop modern React interfaces, contribute to PHP backend services, and help deliver seamless, high-converting checkout flows. We’re looking for someone with relevant professional experience who’s excited to grow as a Full Stack Developer. Whether your background is stronger in frontend or backend, you’re curious, adaptable, and eager to keep learning across the stack. Build end-to-end features across frontend and backend. Develop modern, responsive user interfaces using React, JavaScript, HTML, and CSS.



Build and maintain backend functionality using modern PHP. Work on our WooCommerce checkout plugin and Magento checkout module. Integrate frontend and backend through REST and GraphQL APIs. Collaborate closely with engineers, product managers, and designers. Experience with modern PHP. Relevant professional experience building web applications. Experience working across the stack, with a stronger background in either frontend or backend. Experience with React, JavaScript, and TypeScript . Experience with REST or GraphQL APIs. You have stronger experience in either frontend or backend and are motivated to continue growing across the full stack. You’re comfortable when priorities shift as we learn. Permanent contract. Private health insurance (partially covered). Hybrid work (3 days office / 2 remote). Office in a central location in Madrid.

📌 Engineer/Constructeur (Madrid)
🏢 FERO
📍 Madrid