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Front-End (HTML, CSS, JavaScript) & Performance Optimization Expert

Technology
Instant Car Fix
Remote, India3 weeks agoUntil 2/6/2026
Part timeFully remote

Job description

  • *About Us**
We are a fast-growing, tech-driven automotive service platform focused on delivering high-performance web experiences. Our goal is to optimize site speed, improve Core Web Vitals, and enhance user experience across all devices.

Role Overview

We are looking for a highly skilled Front-End Developer (HTML, CSS, JavaScript) with strong expertise in performance optimization. You will be responsible for building, optimizing, and refining user-facing features while ensuring fast load times and excellent user experience.

Key Responsibilities

  • Develop and optimize responsive UI using HTML5, CSS3, and JavaScript (ES6+)
  • Improve page speed and Core Web Vitals (LCP, FCP, CLS)
  • Eliminate render-blocking resources and optimize asset loading
  • Implement critical CSS, lazy loading, and async/deferred scripts
  • Optimize and refactor existing Bootstrap and custom front-end code
  • Reduce unused CSS/JS and improve overall code efficiency
  • Ensure cross-browser compatibility and mobile responsiveness
  • Collaborate with backend team to integrate APIs and improve performance
  • Debug and fix UI/UX issues across devices

Requirements

  • Strong expertise in HTML, CSS, and JavaScript
  • Proven experience with website performance optimization
  • Hands-on experience with Chrome DevTools, Lighthouse, and PageSpeed Insights
  • Experience with responsive design and mobile-first development
  • Knowledge of caching strategies, CDN usage, and asset optimization
  • Ability to write clean, maintainable, and scalable front-end code

Nice to Have

  • Experience with Bootstrap and modern CSS frameworks
  • Familiarity with build tools like Webpack or Vite
  • Experience with Laravel or Livewire-based applications
  • Understanding of SEO and performance best practices

Project Scope

  • Front-end development and UI improvements
  • Website performance audit and implementation of fixes
  • Ongoing optimization for speed and user experience

Engagement Type

  • Freelance / Contract (potential for long-term engagement)
  • Remote

How to Apply

Please share

  • Portfolio or live websites you’ve worked on
  • Examples of performance improvements (before/after metrics)
  • Your availability and expected hourly/project rate
Job Types: Full-time, Part-time

Work Location: Remote

Keywords
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