Frontend Engineering Specialist

About the Role

We are seeking a highly skilled Software Engineering Specialist to join xAI’s Human Data team, where you will play a critical role in creating cutting-edge datasets to train, benchmark, and advance large language models. In this role, you will collaborate with technical staff to curate high-quality code examples, refine AI-generated code, and enhance enterprise-level AI-driven coding solutions. By leveraging your expertise in front-end development and data annotation across text, voice, and video formats, you will help teach AI models about human interactions, reactions, and problem-solving approaches. Ideal candidates are adaptable, detail-oriented, and passionate about driving innovation in a fast-paced environment to support xAI’s mission of building a trusted global digital public square.

Responsibilities

• AI model training initiatives by curating code examples, offering precise solutions, and meticulous corrections in Python, JavaScript (including ReactJS), C/C++, Java,  Rust and Go. The Front-End Specialist will focus on any and all Enterprise aspects, as listed in ‘Required Qualifications’ section.
• Evaluate and refine AI-generated code, ensuring it adheres to industry standards for efficiency, scalability, and reliability.
• Collaborate with cross-functional teams to enhance AI-driven coding solutions, ensuring they meet enterprise-level quality and performance benchmarks.

Required Qualifications

• 5+ years of professional front-end development experience building responsive, user-facing web applications
• Deep expertise in React (including hooks, context, modern state management such as Redux/Zustand/Recoil, and component lifecycle) — required
• Strong proficiency in Vue and/or Angular — big pluses
• Proficient in JavaScript (ES6+) and TypeScript
• Expertise in CSS, Tailwind CSS, responsive design, UI interactions, and animations
• Solid understanding of performance optimization (lazy loading, code splitting, caching strategies, asset optimization)
• Experience implementing accessibility standards (WCAG 2.1+, ARIA roles, semantic HTML, keyboard navigation)
• Familiarity with SEO best practices for single-page applications
• Strong debugging and profiling skills using browser DevTools and performance monitoring tools
• Hands-on experience with testing frameworks (Jest, Vitest, React Testing Library, Playwright, etc.)
• Solid understanding of client-server communication via REST and/or GraphQL APIs

Preferred Qualifications

• The ideal candidate for this role is adaptable, possesses strong logical reasoning skills, is detail-oriented, and thrives in a fast-paced work environment.
• Experience integrating analytics, monitoring and front-end security best practices.
• Experience with containerization technologies (Docker).
• Knowledge of backend technologies (python, Node.js, APIs, databases, authentication, etc.) to enable effective full-stack collaboration.

Location & Other Expectations

• US-based candidates cannot be hired in Wyoming or Illinois at this time.
• Visa sponsorship is not available.
• For remote positions, candidates should have a reliable high-speed internet connection, along with a functioning camera and microphone for seamless participation in virtual meetings.

Compensation

$35/hour - $100/hour

The posted pay range is intended for U.S.-based candidates and depends on factors including relevant experience, skills, education, geographic location, and qualifications. For international candidates, our recruiting team can provide an estimated pay range for your location.

Benefits:

Hourly pay is just one part of our total rewards package at xAI. Specific benefits vary by country, depending on your country of residence you may have access to medical benefits. We do not offer benefits for part-time roles.