Key skills
JavaScriptAIReactVueAngularReduxZustandPerformance OptimizationCommunication
About this role
Alignerr is seeking experienced frontend engineers to help train the next generation of AI. The role involves evaluating, writing, and refining high-quality UI coding problems and solutions to improve AI models' understanding of frontend code.
Responsibilities:
- Review and evaluate AI-generated frontend code (JavaScript, HTML, CSS) for correctness, efficiency, accessibility, and best practices
- Write high-quality frontend solutions to UI and web development challenges across a range of difficulty levels
- Craft clear, well-reasoned explanations for design decisions, code logic, and problem-solving approaches
- Identify edge cases, ambiguities, or errors in problem statements and AI-generated responses
- Help set the standard for what great frontend code looks like — for both humans and AI
Requirements:
- Fluent in English with strong written communication skills — you can explain complex frontend concepts clearly and concisely
- Deep expertise in JavaScript, including async/await, closures, DOM manipulation, ES6+ syntax, and browser APIs
- Experienced with modern frontend frameworks and tools such as React, Vue, or Angular
- 3+ years of hands-on frontend or web development experience preferred
- Bachelor's degree (or in progress) in Computer Science or a related field — Master's or PhD is a plus, but not required
- Detail-oriented and comfortable working independently without close supervision
- Familiarity with accessibility standards (WCAG) and performance optimization techniques
- Experience with state management libraries (Redux, Zustand, Pinia, etc.)
- Prior work on data labeling, RLHF, or AI model training projects