Prolific

Prolific is a platform that enables researchers to quickly find trustworthy research participants. With a pool of over 120,000 active and verified participants, Prolific ensures high-quality responses through continuous monitoring and engagement. The p...

Professional Services

Industrials

51-250 (240)

Founded 1997

$0M raised

138 open positions

Links

View All Jobs

Javascript - Senior Developers - AI Training - London, UK

1 month ago

United Kingdom

Contract

Senior

AI (Artificial Intelligence)

Software Development

Angular Cypress GraphQL JavaScript Jest Node.js React REST API TypeScript Vue.js

Apply Now

Prolific

Professional Services

51-250

Founded 1997

$0M raised

View All Jobs 138

Description

Review AI-generated JavaScript and TypeScript code for correctness and best practices.
Validate step-by-step reasoning for complex algorithmic solutions.
Execute model-generated scripts in Node.js or browser consoles to verify behavior and output.
Identify inefficient solutions, deprecated syntax, and hallucinated library methods in model responses.
Provide structured feedback on frontend and backend architecture reasoning.
Assess model performance and annotate issues such as logical flaws, memory leaks, and security vulnerabilities.
Complete a 10- to 15-minute assessment test to determine suitability for AI tasks.
Perform paid tasks that may require up to one hour of uninterrupted work.

Requirements

BS, MS, or PhD in Computer Science, Software Engineering, or a closely related technical field.
Professional experience building scalable web applications using JavaScript or TypeScript.
Ability to solve LeetCode Medium to Hard-level problems in JavaScript independently.
Expert understanding of the Event Loop, closures, prototypical inheritance, and asynchronous patterns such as Promises and async/await.
High standard for clean code, including modularity, readability, and adherence to modern ES6+ standards.
Ability to spot subtle logical flaws, memory leaks, and security vulnerabilities such as XSS and prototype pollution.
Expert mastery of JavaScript (ES6+) and TypeScript.
Extensive experience with React, Node.js, Vue, or Angular.
Proficiency with Jest, Cypress, Webpack, and Vite.
Strong understanding of RESTful APIs, GraphQL, and server-side logic in a Node environment.

Benefits

Pay rates of up to $50 per hour for relevant work.
Flexible hours.
Ability to work from home.
Quick onboarding after passing the assessment, with the ability to join in about 15 minutes.
Opportunity to influence the development of future AI models using professional expertise.

Interested in this position?

Apply directly on the company website

Apply Now

Similar Roles

SWE Fellow - Human Frontier Collective (UK)

Scale AI 251-1K Diversified Consumer Services

The Human Frontier Collective Fellowship at Scale is a fully remote contract role supporting AI research by designing, evaluating, and interpreting advanced generative AI systems with interdisciplinary experts and partner labs.

United Kingdom Contract Senior AI (Artificial Intelligence) Software Engineer

C++ Generative AI Java JavaScript Machine Learning Python Rust Swift

21 hours, 48 minutes ago

Apply

21 hours, 48 minutes ago

Senior Design Engineer, Embedded Agreements

PandaDoc 251-1K Internet Software & Services

PandaDoc is hiring its first Design Engineer to own the design of its API and integrations surfaces within the Embedded Agreements track, shaping developer and user experiences for a growing ecosystem of tools and AI-native workflows.

Poland Portugal Ukraine Contract Senior Frontend Engineer / Web Developer Product Designer (UI/UX)

$31k-$40k

CSS Figma HubSpot Prototyping React Salesforce TypeScript

22 hours, 3 minutes ago

Apply

22 hours, 3 minutes ago

Norwegian Post-Editor | Technology Company

OLIVER 1K-5K Media

A tech company is seeking a Norwegian Post-Editor to support MTPE projects by refining marketing copy and product descriptions for AI-driven content development.