Senior Full Stack Developer - Freelancer
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 are looking for a Senior Full Stack Developer (Freelance) to collaborate with our in-house tech team on high-impact, long-term projects.
👉 This is a freelance position , with flexible remote work (Barcelona-based candidates are a plus).
Your Role:
As a Senior Full Stack Developer at Netenders , you’ll work on long-term, high-impact projects, including:
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Leading the technical evolution and optimization of our multi-brand e-commerce ecosystem.
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Architecting scalable React frontends and robust Ruby on Rails backend services.
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Developing core CMS features, specifically focusing on complex supplier integrations and high-volume data flows.
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Designing high-performance APIs and back-office tools for pricing and SEO management.
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Ensuring code quality and architectural consistency through expert-level pull request reviews.
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Collaborating with cross-functional teams to translate business requirements into clean, maintainable code.
About you:
You are a self-driven developer with a consultant mindset. You don’t just write code; you design solutions that consider the long-term health of the product. You enjoy the autonomy of freelance work but understand the importance of mentorship and sharing your technical expertise to help internal teams grow.
Requirements:
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5+ years of experience with Ruby on Rails (v5+), including successful version migrations.
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3+ years of professional experience building modern interfaces with React.
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Deep understanding of software design patterns and RESTful API architecture.
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Proven track record in e-commerce or handling complex, data-heavy backend systems.
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Strong proficiency with Docker and GIT-based workflows.
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Ability to work autonomously and communicate complex technical concepts clearly.
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Nice-to-have: Experience with Hotwire Native, ElasticSearch, Redis, or Google Cloud Platform.
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
Originally posted on Himalayas