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Middle/Senior React Developer – Part Time at INDEX Corporation | JobVerse
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Middle/Senior React Developer – Part Time
INDEX Corporation
Remote
Website
LinkedIn
Middle/Senior React Developer – Part Time
United Kingdom
Part Time
1 hour ago
No Sponsorship
Apply Now
Key skills
Bootstrap
JavaScript
Jest
Next.js
Python
React
Ruby
Ruby on Rails
SCSS
TypeScript
Webpack
Analytics
React.js
Tailwind
Tailwind CSS
Sass
HTML5
CSS3
Rails
Unit Testing
Git
Performance Optimization
Agile
Collaboration
About this role
Role Overview
Build and maintain React and Next.js components, pages, and application logic.
Implement responsive, accessible, and SEO-optimized UI using modern CSS approaches.
Troubleshoot and fix bugs in the existing frontend codebase.
Identify and resolve frontend performance issues (code splitting, memoization, lazy loading).
Monitor and optimize Core Web Vitals in collaboration with product and marketing teams.
Ensure smooth and reliable integration with backend APIs.
Implement and maintain technical SEO best practices.
Support analytics and conversion tracking integrations (GA4, Meta Pixel, etc.).
Debug, QA, and validate analytics and tracking across public-facing pages.
Requirements
Strong knowledge of HTML5, CSS3, JavaScript (ES6+), and TypeScript.
Solid hands-on experience with React.js and modern frontend development.
Experience with Next.js or other SSR/SSG frameworks.
Strong understanding of technical SEO principles and best practices.
Experience with performance optimization and Core Web Vitals.
Familiarity with Tailwind CSS (and/or SASS, Bootstrap).
Experience with unit testing using Jest.
Good understanding of Git and modern build tools (e.g., Webpack).
Ability to work independently with good self-organization skills.
Desire to learn backend development (Ruby on Rails and/or Python) is a plus.
Basic understanding of REST APIs and backend concepts is a plus.
Tech Stack
Bootstrap
JavaScript
Jest
Next.js
Python
React
Ruby
Ruby on Rails
SCSS
TypeScript
Webpack
Benefits
A frontend-focused role with clear ownership and impact.
Close collaboration with product, design, and marketing teams.
Real influence over performance, SEO, and analytics quality.
A supported path toward backend development for those who want it.
A modern tech stack and agile working environment.
A culture that values quality, autonomy, and continuous learning.
Apply Now
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