Software Engineer - Frontend

Alignerr Corp.; United States; Remote; USD 34,000 - 138,000; Part time

Job summary

Labelbox is seeking a Frontend SWE (Contract) to review AI-generated frontend code and craft high-quality UI solutions. This fully remote, hourly engagement fits flexible schedules and async collaboration.

You will work with JavaScript, HTML, CSS, and modern frameworks, explain design decisions clearly, and flag edge cases in problem statements or AI responses. Rolling start dates on projects as they come online.

Qualifications

• Proven frontend development experience with modern frameworks.
• Strong written and verbal English communication.
• Experience reviewing AI-generated frontend code is a plus.

Responsibilities

• 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.

Skills

JavaScript

Frontend development

English communication

Frontend theory

Education

Bachelor's degree in Computer Science or related field

Master's degree or PhD preferred

Tools

React

Vue

Angular

ES6+

Job description

• Remote Shape the data that powers frontier AI

SWE - Frontend (Contract)

Labelbox

• Remote Shape the data that powers frontier AI

Quick facts

• Engagement - Hourly, at-will contractor
• Schedule - Fully remote & asynchronous (min.15hrs/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. Masters 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 & Fortune500 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, AndreessenHorowitz, BCapital, GradientVentures, DatabricksVentures, and KleinerPerkins, and trusted by leading research labs and enterprises worldwide.