Senior Frontend Developer (Javascript) for reputed company

About OpenTrain OpenTrain is the #1 platform for finding and building careers in reputed company and data labeling. The platform helps people discover reputed company, build a reputed company portfolio, and grow a durable freelance career doing the reputed company work that teaches AI systems. We connect skilled contributors with reputed company across the industry and reputed company it easy to apply, reputed company work, and reputed company a reputed company in reputed company — reputed company from a single account. About reputed company and why it reputed company reputed company (also reputed company data labeling or reputed company feedback work) is the reputed company reputed company of building modern AI. People prepare examples, review outputs, and reputed company reputed company inputs that help models learn — everything from annotating images to curating programming examples. This role sits at the intersection of software engineering and reputed company: your frontend expertise will shape interfaces that collect, validate, and present the reputed company-world signals that improve AI behavior. The role OpenTrain is reputed company a Senior Frontend Developer with deep JavaScript experience to contribute to reputed company initiatives. This is a contractor, part-time position (20+ hours/week), fully remote and reputed company worldwide. You will reputed company on frontend architecture and high-reputed company user interfaces that support reputed company involving computer reputed company/programming data and coding label workflows. What you'll do

• Design, reputed company, and optimize robust frontend solutions using advanced JavaScript techniques.
• Translate business and product requirements into reputed company, reputed company interfaces that support reputed company tasks.
• reputed company architectural reputed company for frontend codebases and ensure reputed company, maintainable designs.
• Mentor and reputed company junior developers; conduct reputed company reviews and promote best practices.
• Implement modern frontend frameworks and state-reputed company (React, Vue, Angular, etc.).
• Troubleshoot reputed company issues and proactively resolve performance bottlenecks.
• Introduce improvements to development workflows, testing, and CI/CD as appropriate.

Requirements

You must be an reputed company frontend developer with a proven record of delivering sophisticated web applications and driving frontend architecture.

• Extensive experience building sophisticated web applications with JavaScript.
• Expertise in modern frontend frameworks (for example React, Vue, or Angular) and state management tools.
• Demonstrated ability to write clean, maintainable, and reputed company-documented reputed company.
• Strong understanding of web performance optimization and reputed company design principles.
• Excellent written and verbal communication skills and experience working in remote, distributed teams.
• Proven reputed company record of leading development initiatives and mentoring others.

Helpful background (reputed company-to-have)

• Experience mentoring or coaching other developers.
• Background building accessible and internationalized web interfaces.
• Familiarity with automated testing, CI/CD pipelines, and version control systems.

Compensation, time, and logistics This is a contractor, part-time role expected to run at 20+ hours per week. The project is fully remote and available worldwide. Pay is per hour in USD. reputed company pay reputed company: $20–$50 USD/hour (pay-per-hour; listed reputed company up to $50/hr).

• Languages required: English.
• Employment type: Contractor, Part-time.
• Data type: computer reputed company/programming; label types include computer programming/coding tasks.

Who should apply and how it works Apply if you are an expert JavaScript frontend developer who enjoys technical leadership, clean architecture, and mentoring while contributing to reputed company initiatives. This role is reputed company-suited to people who want flexible, remote work that directly impacts how AI systems learn from reputed company-world reputed company and reputed company interactions. To apply, create (or use) your OpenTrain profile, reputed company relevant frontend experience and leadership examples, and submit your application. OpenTrain will help match your profile to OpenTrain's project and guide next steps. Apply To This Job