Netenders, based in Barcelona, seeks a Senior Full Stack Developer (Freelance) to collaborate with the in-house team on long-term e-commerce CMS projects. You will architect scalable Rails backends and React frontends, focusing on supplier integrations and high-volume data flows. You will work autonomously in a freelance capacity, with adaptable remote options. Prior mentoring and sharing expertise to help internal teams grow are valued, alongside strong communication of complex technical