JavaScript Engineer

Remote

May 7, 2025

Full Time

Application ends: August 6, 2025

Job Description

About the Role

We’re looking for a JavaScript Engineer who can architect, optimize, and scale high-performance browser-based applications. This role requires fluency across the JavaScript ecosystem—from deep browser-level debugging to integrating and extending build tools. You will contribute directly to performance-critical features in our customer-facing platform, working alongside backend engineers and designers to ship measurable improvements in speed and usability.

Key Responsibilities

Design and implement modular, testable JavaScript code in modern frameworks (preferably React with Redux or Zustand).
Refactor legacy code (jQuery, Backbone) into modern components without regressions.
Optimize application performance through profiling, lazy loading, and fine-grained memoization.
Write unit, integration, and e2e tests using tools like Jest, Testing Library, and Playwright.
Extend and maintain our Webpack-based toolchain and CI/CD scripts for deployment.
Own the JavaScript layer of our design system, ensuring accessibility (ARIA), responsiveness, and keyboard navigation are robust.
Participate in architecture decisions related to SSR (e.g., Next.js), hydration strategies, and bundle splitting.
Review code rigorously, propose improvements, and mentor junior developers in JavaScript best practices.

Required Qualifications

4+ years of professional JavaScript experience, with at least 2 years in TypeScript-heavy environments.
Strong understanding of ES6+ concepts, including closures, async/await, modules, destructuring, and generators.
Proven experience optimizing DOM-heavy applications (e.g., complex dashboards, data visualization tools).
Hands-on experience with browser APIs (IntersectionObserver, WebSockets, Fetch API) and low-level debugging (DevTools, performance timelines).
Demonstrated ability to reduce JS bundle sizes, eliminate unused code, and improve Time to Interactive (TTI).
Experience with monorepos using Nx or Turborepo.
Familiarity with GraphQL clients (Apollo, urql) and RESTful integrations.
Comfortable with Git-based workflows and code reviews in large-scale, multi-contributor projects.

Nice to Have

Experience contributing to open-source JavaScript tooling (e.g., Babel, ESLint plugins, Vite).
Familiarity with WebAssembly or integrating JS with Rust or Go.
Exposure to browser automation or browser extension development.
Background in functional programming or reactive paradigms (RxJS, MobX).

Are you interested in this position?

Apply by clicking on the “Apply Now” button below!