Netenders is an international e-commerce group based in Barcelona, operating several leading online stores across 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 Full Stack Developer to join our in-house tech team and contribute to the evolution of our e-commerce platforms.

This position is open to both permanent employment and freelance collaboration. We are looking for an experienced developer who is interested in a long‑term partnership and wants to have a meaningful impact on our technology ecosystem.

This is a full‑time, on‑site position based in our Barcelona office (with hybrid flexibility). You’ll play a key role in the architecture, optimization, and development of our e-commerce platforms. While you won’t directly lead the team, your technical expertise and experience will be essential in guiding developers, improving processes, and supporting complex technical decisions.

Your Role

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

Supporting quality assurance by reviewing pull requests from other developers and sharing best practices





Collaborating 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 (permanent contract):

23 holiday days per calendar year

Ticket restaurant for your daily meal

Health insurance

Access to our gym program

Hybrid work

Quarterly 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 identity, or gender expression.

📌 Full Stack Developer (Madrid)
🏢 Netenders Holding
📍 Madrid