Senior Full Stack Developer - Freelancer

Role Summary

• •Lead the technical evolution of a multi-brand e-commerce ecosystem with a focus on scalability and performance.
• •Architect and develop React frontends and Ruby on Rails backend services for a custom CMS.
• •Design and implement high-performance APIs and back-office tools for pricing and SEO management.
• •Ensure code quality and architectural consistency through expert-level pull request reviews.
• •Collaborate with cross-functional teams to translate business requirements into clean, maintainable code.

About the Company

• •Netenders is an international e-commerce group operating leading online stores in Europe and North America.
• •The company is focused on innovation by developing its own cutting-edge e-commerce CMS.
• •Based in Barcelona, it promotes a culture of growth and inclusivity with a commitment to equal employment opportunities.
• •Netenders is in a phase of full expansion, emphasizing creativity and passion in its workforce.
• •The company values diversity and fosters an environment that reflects inclusive hiring practices.

What You Should Know

• •This is a freelance/contractor role with flexible remote work, ideally for Barcelona-based candidates.
• •Applicants should have a consultant mindset, focusing on long-term product health and solution design.
• •The role offers autonomy but requires mentorship and knowledge sharing with internal teams.
• •Candidates will face challenges related to complex supplier integrations and handling high-volume data flows.
• •Ideal applicants are dynamic, creative, and passionate about working in a fast-growing e-commerce environment.

Key Required Skills