Job DescriptionJob Title: Javascript DeveloperJob Type: ContractLocation: RemoteJob 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.Key ResponsibilitiesDesign, develop, and optimize robust frontend solutions using advanced JavaScript techniques.Collaborate closely with cross-functional teams to translate business requirements into intuitive digital interfaces.Lead architectural decisions and mentor junior developers, ensuring best practices and code quality across the team.Implement modern frontend frameworks and libraries to deliver scalable and maintainable applications.Conduct code reviews, provide constructive feedback, and continuously advocate for clean, efficient code.Troubleshoot complex issues, proactively identifying and resolving performance bottlenecks.Stay abreast of industry trends,



introducing innovative technologies and approaches to improve development workflows.Required Skills And QualificationsExtensive experience building sophisticated web applications with JavaScript.Expertise in modern frontend frameworks (e.g., React, Vue, Angular) and state management tools.Demonstrated ability to write clean, maintainable, and well-documented code.Excellent written and verbal communication skills, with a strong commitment to clarity and collaboration.Proven track record of driving frontend architecture and leading development initiatives.Strong understanding of web performance optimization and responsive design principles.Experience working in remote, distributed teams.Preferred QualificationsExperience mentoring or coaching other developers.Background in building accessible and internationalized web interfaces.Familiarity with automated testing, CI/CD pipelines, and version control systems.
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📌 Javascript Developer - Remote (Barcelona)
🏢 YO IT CONSULTING
📍 Barcelona