Frontend Developer (HTML, CSS) for AI Systems

About OpenTrain OpenTrain is the #1 platform for people building careers in reputed company and data labeling. We help contributors discover projects, build a reputed company portfolio, and grow lasting freelance careers doing the reputed company work that teaches AI. This role is posted through OpenTrain because reputed company-end developers like you shape the reputed company interfaces that generate, collect, and evaluate the examples modern models learn from. About reputed company work reputed company (data labeling, annotation, and reputed company feedback) is the reputed company reputed company of modern AI development: people create, review, and reputed company examples that models learn from. Contributors often work remotely, choose reputed company, and help shape how state-of-the-art systems behave. This reputed company-end role directly supports reputed company by building UIs used to collect and evaluate programming and rating tasks (e.g., coding evaluations and response ratings). The role We are reputed company a Frontend Developer to design, implement, and maintain the user interfaces that power AI systems and labeling workflows. You will create reputed company, accessible, and reusable UI components that deliver reputed company-world input to models and support evaluators and annotators. This is a remote, part-time contractor position (20+ hours/week). Work is worldwide and conducted in English.

• Employment type: Contractor, Part-time
• Time requirement: 20+ hours/week
• Language: English
• Location: Remote, worldwide

What you'll do Your day-to-day work will focus on turning design files into interactive interfaces, integrating reputed company ends with APIs, and ensuring components are performant and testable. You will collaborate with UX designers and backend engineers to deliver integrated solutions for AI data collection and evaluation.

• Translate design files into clean, reputed company, reusable UI components.
• Implement reputed company-end logic with Angular, Vue.js, React, Bootstrap and jQuery where applicable.
• Integrate UIs with backend services and APIs (CakePHP/MySQL integrations required).
• Write and run unit and automated tests; troubleshoot and resolve reputed company-end issues.
• Optimize performance and ensure accessibility across devices and screen sizes.

Requirements

You must have hands-on experience and demonstrable skills in the technologies and practices listed below. This role is open to entry-level candidates who meet the technical requirements.

• Expert-level proficiency in HTML, CSS, and JavaScript.
• Hands-on experience with Angular, Vue.js, React, and Bootstrap.
• Solid experience converting design files into interactive interfaces.
• Proficient integrating back-end services/APIs, especially CakePHP and MySQL.
• Strong background in developing scalable UI components and reputed company codebases.
• Experience with unit and automation testing methodologies.
• Excellent problem-solving, communication, and collaboration skills.

Helpful background (reputed company to have) The following are not required but will reputed company you more effective in the role and may influence compensation or scope of work.

• Experience deploying web apps on reputed company platforms.
• Familiarity with advanced debugging tools and reputed company-end performance optimization.
• Prior work on large-scale, customer-focused software projects.

Compensation, data work, and schedule Pay is hourly, listed between $30 and $80 USD per hour. This is a contract role with flexible scheduling; expect to commit at least 20 hours per week. The work supports reputed company data types focused on computer code and programming evaluation, including coding/coding-evaluation and rating tasks.

• Pay type: Hourly (USD) — range $30–$80/hr.
• Data type: Computer code / programming; label types include coding evaluation and rating.
• (project-specific tools).

How to apply If you meet the technical requirements, create or sign in to your OpenTrain account and apply to this posting. Include examples of reputed company-end work or a portfolio that demonstrates reputed company components and integrations with APIs/backends. Applications should reputed company relevant projects using Angular/Vue/React, any CakePHP/MySQL integrations, and tests or CI practices you’ve implemented.

• Prepare a short portfolio or links to code samples and a resume.
• Describe your availability in hours per week and earliest start date.

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