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Senior Javascript Jobs (NOW HIRING)

GliaCell Technologies

Senior CNO NetDev Developer

Laurel, MD · On-site

$200 - $280/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

GliaCell is seeking a Senior CNO NetDev Developer on one of our subcontracts. This is a full‑time ... Java, JavaScript, Bash, PowerShell, Perl, C#, Rust. * Experience with developing CNO specific ...

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How much do senior javascript jobs pay per year?

As of Aug 19, 2026, the average yearly pay for senior javascript in the United States is $80,287.00, according to ZipRecruiter salary data. Most workers in this role earn between $41,500.00 and $103,000.00 per year, depending on experience, location, and employer.

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Senior Javascript jobs near you
Infographic showing various Senior Javascript job openings in the United States as of August 2026, with employment types broken down into 1% Internship, 85% Full Time, 3% Part Time, and 11% Contract. Highlights an 79% Physical, 5% Hybrid, and 16% Remote job distribution, with an average salary of $80,287 per year, or $38.6 per hour.

Javascript - Senior Developers - AI Training - Raleigh, US

Prolific

Remote

Full-time

Re-posted 3 days ago

Job description

Job Summary:
Prolific is building the biggest pool of quality human data in the world, utilized by over 35,000 AI developers and organizations. They are seeking JavaScript Experts to join their Expert Network to train and evaluate AI models, ensuring the functional correctness and quality of AI-generated code.
Responsibilities:
• Evaluate Code Accuracy: review AI-generated JavaScript and TypeScript code for functional correctness and adherence to best practices.
• Validate Logic & Reasoning: audit the step-by-step explanations provided by AI for complex algorithmic solutions to ensure they are logically sound.
• Conduct Execution Testing: execute model-generated scripts in appropriate environments (Node.js or Browser consoles) to verify performance and output.
• Annotate Model Performance: identify areas where a model provides inefficient solutions, deprecated syntax, or hallucinated library methods.
• Refine Technical Logic: provide structured feedback on how models reason through frontend or backend architecture discussions.
Qualifications:
Required:
• Education: a BS, MS, or PhD in Computer Science, Software Engineering, or a closely related technical field.
• Professional Experience: professional experience building scalable web applications using JavaScript/TypeScript.
• Coding Proficiency: ability to solve LeetCode Medium to Hard-level problems in JavaScript independently.
• Deep Domain Knowledge: expert understanding of the Event Loop, closures, prototypical inheritance, and asynchronous patterns (Promises, async/await).
• Code Quality: a high standard for clean code, including modularity, readability, and adherence to modern ES6+ standards.
• Attention to Detail: ability to spot subtle logical flaws, memory leaks, or security vulnerabilities (e.g., XSS, prototype pollution) in model-generated code.
• Core Language: expert mastery of JavaScript (ES6+) and TypeScript.
• Frameworks: extensive experience with React, Node.js, Vue, or Angular.
• Testing & Tools: proficiency with Jest, Cypress, Webpack, and Vite.
• Backend & API: strong understanding of RESTful APIs, GraphQL, and server-side logic in a Node environment.
Company:
Building the most advanced global infrastructure for People Science. Founded in 2014, the company is headquartered in London, GBR, with a team of 51-200 employees. The company is currently Growth Stage.

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