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# Node.Js Developer

- **Company:** YO IT CONSULTING
- **Location:** Barcelona, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Artificial Intelligence, Code Review, Information Technology Consulting, Software Debugging, Node.Js, TypeScript, Backend, Asynchronous Programming
- **Published:** August 31, 2026
- **Apply:** https://www.jobleads.com/es/job/ee1b79503a694de96bcedcf9a4806b72d

## About the Role

* Extensive hands-on experience with Node.js, JavaScript, and TypeScript in professional environments.
 * Expert problem-solving and debugging abilities within distributed application systems.
 * Strong attention to detail in both code review and written documentation.
 * Excellent written and verbal communication skills, with an emphasis on clarity and thoroughness.
 * Deep understanding of backend application architectures and common development patterns.
 * Demonstrated ability to analyze and articulate technical trade-offs and solutions.
 * Proactive, collaborative approach to cross-functional teamwork., * Prior experience contributing to AI-related projects or model training initiatives.
 * Background in designing or maintaining large-scale, high-availability Node.js applications.
 * Experience with remote collaboration and asynchronous communication tools.

## Description

Job Summary: In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required - your domain knowledge is what matters., * Leverage your deep knowledge of Node.js, JavaScript, and TypeScript to provide expert-level input and feedback for AI system development.

 * Analyze and review code samples to ensure accuracy, efficiency, and adherence to best practices.
 * Collaborate with multidisciplinary teams to identify key development patterns and problem-solving strategies in backend engineering.
 * Evaluate real-world Node.js scenarios to help models learn robust, scalable, and maintainable solutions.
 * Document insights, edge cases, and nuanced technical considerations in clear, effective written form.
 * Contribute to model training by communicating complex concepts in a way that's accessible for both technical and non-technical stakeholders.
 * Uphold high standards of written and verbal communication with both internal and external partners.