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Javascript Jobs in Los Angeles, CA

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Javascript • los angeles ca

Last updated: 2 days ago
Remote JavaScript Engineer - AI Trainer

Remote JavaScript Engineer - AI Trainer

SuperAnnotateMontebello, California, US
Remote
Full-time
As an hourly paid, fully remote JavaScript Engineer for AI Data Training, you will review complex AI-generated code and explanations or generate new ones, evaluate the reasoning quality and step-by...Show moreLast updated: 15 days ago
Solutions Architect - JavaScript

Solutions Architect - JavaScript

VirtualVocationsVan Nuys, California, United States
Full-time
A company is looking for a Solutions Architect - Javascript.Key Responsibilities Design and implement robust, scalable solutions using JavaScript, React. Collaborate with senior stakeholders to tr...Show moreLast updated: 30+ days ago
Senior Web / JavaScript Engineer (R50029978)

Senior Web / JavaScript Engineer (R50029978)

Fox CorporationLos Angeles, California
Full-time
Fox CorporationUnder the FOX banner, we produce and distribute content through some of the world’s leading and most valued brands, including : FOX News Media, FOX Sports, FOX Entertainment, FOX Tele...Show moreLast updated: 30+ days ago
Frontend Developer -React / JavaScript

Frontend Developer -React / JavaScript

Sourcing ScreenLos Angeles, CA, US
Part-time
Freelancers will help improve AI systems through work extending coding benchmarks that reflect real-world development across diverse languages and domains. This is a unique opportunity to apply your...Show moreLast updated: 30+ days ago
  • Promoted
Senior Web / JavaScript Engineer

Senior Web / JavaScript Engineer

FoxLos Angeles, CA, United States
Full-time
OVERVIEW OF THE COMPANYFox Corporation Under the FOX banner, we produce and distribute content through some of the world's leading and most valued brands, including : FOX News Media, FOX Sports, FOX...Show moreLast updated: 3 days ago
  • Promoted
Engineer II - API (JavaScript / RoR)

Engineer II - API (JavaScript / RoR)

MagniteLos Angeles, CA, United States
Full-time
Engineer II - API (JavaScript / RoR).Hybrid Schedule (M / F remote, T / W / TH in-office).At Magnite, we cultivate an environment of continuous growth and collaboration. Our work impacts what millions of pe...Show moreLast updated: 3 days ago
Sr. Software Engineer, JavaScript

Sr. Software Engineer, JavaScript

NBCUniversalUniversal City, CALIFORNIA, United States
Full-time
Our Media Group portfolio is a powerhouse collection of consumer-first brands, supported by media industry leaders, Comcast, NBCUniversal and Sky. When you join our team, you’ll work across our dyna...Show moreLast updated: 2 days ago
tutor - JavaScript programming

tutor - JavaScript programming

BUKILos Angeles, CA, US
Full-time +1
Do you want to earn money by teaching? Would you like to have a flexible schedule without being in the office all the time? Are you creative and do you like to implement your own teaching strategy ...Show moreLast updated: 30+ days ago
JavaScript Developer

JavaScript Developer

ProsumBurbank, CA, United States
Full-time
The company, a well-established entertainment company, is looking for software engineers, who will help in developing a custom application for program scheduling. The said application will be used b...Show moreLast updated: 3 days ago
  • Promoted
Senior Full Stack JavaScript Engineer / Hybrid in Santa Monica

Senior Full Stack JavaScript Engineer / Hybrid in Santa Monica

Motion RecruitmentLos Angeles, CA, United States
Full-time
We're working with a cutting-edge company at the intersection of music, technology, and fan engagement, helping artists connect more deeply with their audiences through powerful digital experiences...Show moreLast updated: 3 days ago
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Remote JavaScript Engineer - AI Trainer

Remote JavaScript Engineer - AI Trainer

SuperAnnotateMontebello, California, US
15 days ago
Job type
  • Full-time
  • Remote
Job description

As an hourly paid, fully remote JavaScript Engineer for AI Data Training, you will review complex AI-generated code and explanations or generate new ones, evaluate the reasoning quality and step-by-step problem-solving, and provide expert feedback that helps models produce answers that are accurate, logical, and clearly explained. You will assess solutions for accuracy, clarity, and adherence to the prompt, identify errors in methodology or conceptual understanding, fact-check information, write high-quality explanations and model solutions that demonstrate correct methods, and rate and compare multiple AI responses based on correctness and reasoning quality.

This role is with SME Careers, a fast-growing AI Data Services company and subsidiary of SuperAnnotate that provides AI training data for many of the world’s largest AI companies and foundation model labs. Your work will directly help improve the world’s premier AI models while giving you the flexibility of impactful, detail-oriented remote contract work.

Key Responsibilities :

  • Develop AI Training Content : Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects.
  • Optimize AI Performance : Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance.
  • Ensure Model Integrity : Test AI models for potential inaccuracies or biases, validating their reliability across use cases.

Your Profile :

  • Minimum 2+ years of professional JavaScript experience in production environments.
  • Strong understanding of closures, async / await, prototype-based inheritance, and JavaScript event loop behavior, with deep proficiency in modern Vanilla JavaScript (ES6 / ES2015+).
  • Proven ability to evaluate correctness, readability, and performance of JavaScript code, including identifying subtle logic and edge-case issues.
  • Hands-on work experience in software engineering, preferably in roles involving code review, mentoring, or technical design discussions.
  • Significant experience using LLMs or AI coding assistants while programming, combined with a critical mindset for validating their output.
  • Excellent English writing skills, capable of producing clear, concise, and pedagogical technical explanations.
  • Strong proficiency with at least one major frontend framework (such as React, Angular, or Vue.js) or backend runtime (such as Node.js with Express or NestJS).
  • Minimum Bachelor’s degree in Computer Science or a closely related technical field.
  • Previous experience with AI data training, data annotation, or evaluation of AI-generated technical content is a strong plus; Minimum C1 English proficiency and a highly detail-oriented working style are required.
  • Preferred : contributions or merged PRs in JavaScript or TypeScript open-source projects, familiarity with bundlers and tooling (Webpack, Vite, Rollup), frontend–backend integration and Node.js runtime behavior, reviewing typed API layers, DTOs, or schema-driven designs, and experience evaluating frontend logic, async patterns, and state management.