Summary: Join Netenders as a Senior Full Stack Developer to play a key part in the architecture, optimization, and development of cutting-edge e-commerce platforms. Highlights: 1. Work on high-impact projects, redesigning and optimizing e-commerce websites. 2. Contribute to an internal e-commerce CMS, handling large data volumes. 3. Collaborate with Product, IT, Marketing, and Design teams. **Netenders** is an international e\-commerce group based in Barcelona, operating several leading online stores in Europe and North America. As we continue to grow and innovate, we are developing our own cutting\-edge e\-commerce Content Management System (CMS) to revolutionize the online shopping experience across our brands. We’re looking for a **Senior Full Stack Developer** to join our in\-house tech team. This is a full\-time, on\-site position in our Barcelona office. You’ll play a key part in the architecture, optimization, and development of our e\-commerce platforms. You won’t lead the team directly, but your technical expertise and experience will be instrumental in guiding and supporting our developers on complex projects. **Your Role:** As a **Senior Full Stack Developer** at Netenders, you’ll work on long\-term, high\-impact projects, including: * Redesign, customization, and optimization of our e\-commerce websites * Building and maintaining React\-based frontends for our e\-commerce websites * Development of verticals for different product categories and business units * Improve and expand our internal e\-commerce CMS, focusing on: + The purchase order process and supplier integrations + Handling and processing large data volumes efficiently + Building back\-office services for product management, pricing, and SEO data + Designing and maintaining clean, scalable APIs and frontend integrations + Support quality assurance by reviewing pull requests from other developers and sharing best practices + Collaborate closely with the Product, IT, Marketing and Design to deliver robust, scalable and user\-friendly solutions **About you:** You’re passionate about building scalable, maintainable, and elegant code. You enjoy mentoring others, sharing your knowledge, and continuously improving both your own work and the systems you contribute to. **Requirements:** * 5\+ years of experience in Ruby on Rails development, especially in recent Versions (5\+), with upgrades from one version to another * 3\+ years of experience building modern frontend applications with React * Experience designing and consuming RESTful APIs * Strong knowledge of software architecture and design patterns across frontend and backend * Proficient in GIT version control and QA processes * Familiarity with Docker containers * Experience in e\-commerce implementations or complex backend systems * Experience with frontend performance and accessibility * Nice\-to\-have skills: mobile development (Hotwire native), ElasticSearch, Memcached or Redis, Google Cloud Platform **What’s in there for you :** * 23 holiday days per calendar year * ️ Ticket restaurant for your daily meal * Health insurance * Access to our gym program * Hybrid work * Quaterly team building * Nice office in the center of Barcelona * Pet friendly office If you are dynamic, creative, passionate, hardworking, and want to join a company in full expansion, send us your application. *We celebrate diversity and want our team to reflect this inclusively. At Netenders, we are committed to equal employment opportunities regardless of ethnicity, religion, gender, national origin, sexual orientation, age, marital status, disability, gender, gender identity, or gender expression*