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IPolarity LLC

JavaScript Engineer Sunrise FL

Pay: Not specified

Posted: 07/15/2026

Location: Hanover, NJ (Onsite)

Last Updated: 1 week ago

Hours: Full-Time

Expires: 10/6/2026

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What they do

A JavaScript Developer or Engineer uses JavaScript to implement the front-end logic that defines the behavior of the visual elements of a web application.

$89,126 / year median in New Jersey

-11% projected decline

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Job Description

We're Hiring:

JavaScript Engineer Location:

Sunrise, FL (Onsite Interview Required) ‍

Experience Required:

12+ Years We're looking for a JavaScript Engineer with deep expertise in Node.js, React, TypeScript, and modern JavaScript to help build and enhance an enterprise-grade open-source web framework supporting 1,000+ engineers.

Key Responsibilities:

✅ Develop scalable enterprise web applications and reusable open-source libraries ✅ Build cross-platform components for future reuse ✅ Optimize applications for performance across browsers, devices, and servers ✅ Automate builds, testing, and deployments ✅ Conduct thorough code reviews and identify breaking changes ✅ Design intuitive, extensible APIs and mentor engineering teams ✅ Solve complex technical challenges with simple, scalable solutions ✅ Champion accessibility, web standards, and open-source best practices

Required Skills:

✔ Strong expertise in JavaScript, Node.js, TypeScript, and React ✔ Solid understanding of React fundamentals, DOM, and JavaScript object model ✔ Experience with ECMAScript (ES6+) ✔ Hands-on experience with Webpack, Babel, NPM, Yarn, and modern JavaScript tooling ✔ Knowledge of Accessibility (A11Y) and Web Standards ✔ Experience writing unit, integration, visual, and performance tests