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Javascript Developer - Remote

Remote · Spain Full-time

Job Description

Job Title: Javascript Developer Job Type: Contract Location: Remote 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.

Key Responsibilities

  • Design, 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 Qualifications

  • Extensive 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 Qualifications

  • Experience 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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