Software Engineer - Frontend

SWE - Frontend (Contract)
Labelbox
Remote Shape the data that powers frontier AI
Quick facts
Engagement - Hourly, at‑will contractor
Schedule - Fully remote & asynchronous (min. 15 hrs/week)
Pay Range (US) - $25 – $100 per hour
Start Date - Rolling — staffed as projects launch
What You’ll Do
Review and evaluate AI-generated frontend code (JavaScript, HTML, CSS) for correctness, efficiency, accessibility, and clarity
Write high-quality frontend solutions to UI and web development problems across varying difficulty levels
Create clear, user-friendly explanations for design decisions, code logic, and problem-solving strategies
Identify and flag edge cases or ambiguities in problem statements or AI responses.
You’re a great fit if
Fluent in English, with strong written communication skills and the ability to clearly explain frontend coding concepts
Expertise in JavaScript: Deep familiarity with core JavaScript features such as async/await, closures, DOM manipulation, ES6+ syntax, and browser APIs
3–5 years of experience with modern frontend frameworks, tools, or domains (e.g., React, Vue, Angular, web development) is a plus
Bachelor’s degree (or pursuing one) in Computer Science or a related field. Master’s or PhD preferred, but not required.
Bonus: Experience with data labeling, RLHF, or other AI training projects
About The Role
Flexible workload — work from anywhere, on your own schedule
High impact — your craft directly improves models used by top AI labs & Fortune 500 teams
Clear ownership — know exactly what success looks like and have autonomy to deliver
Growth potential — consistent high performers spearhead new programs and mentor incoming SMEs
Interview process
Complete a screening with Zara, our AI interviewer in English, to learn more about your background and experience.
Domain-specific Zara interview to assess your frontend expertise, including frontend frameworks, state management, and performance optimization.
About Labelbox
Labelbox builds the data engine that accelerates breakthrough AI. Our platform, expert services, and marketplace let teams iterate on data as nimbly as they iterate on code, enabling safer, smarter models in production. We’re backed by SoftBank, Andreessen Horowitz, B Capital, Gradient Ventures, Databricks Ventures, and Kleiner Perkins, and trusted by leading research labs and enterprises worldwide.
Ready to Apply?
Click “Apply” above, and take one or more domain specific assessments.
We review candidates on a rolling basis and will contact you if your background matches an active project.

Work arrangement
Yes