Performance Optimization Developer

🔥 Urgent Hiring – Performance Optimization Developer Are you passionate about building high-performance websites that rank well and deliver exceptional user experiences? 💻🚀 SISGAIN is looking for a skilled Web Developer with strong Frontend Development, Technical SEO, and PHP expertise to join our growing team. If you have experience optimizing website performance, improving Core Web Vitals, and developing responsive web applications, we'd love to hear from you! 📍 Location: C-109, Sector-2, Noida 💼 Position: Web Developer (Frontend + Technical SEO + PHP) 🕒 Job Type: Full-Time (On-site) 🎯 Experience: 2–4 Years ⚡ Immediate Joiner Required Key Responsibilities: • Develop and maintain responsive, user-friendly websites • Optimize website performance, speed, and Core Web Vitals • Implement Technical SEO best practices and schema markup • Work with PHP for website development and maintenance • Migrate Bootstrap 4/5 projects and modernize frontend code • Convert jQuery-based functionality to Vanilla JavaScript • Improve Lighthouse scores and frontend performance • Optimize DOM structure, CSS, JavaScript, and images • Implement lazy loading and render optimization techniques • Ensure accessibility compliance (ARIA/WCAG standards) • Build reusable layouts and component-based architectures • Perform code refactoring, cleanup, and performance enhancements • Collaborate with design, SEO, and development teams • Manage code repositories using Git and version control systems Required Skills: • Strong expertise in HTML5, CSS3, JavaScript, and PHP (Mandatory) • Experience with Bootstrap 4/5 • Knowledge of jQuery and Vanilla JavaScript • Strong understanding of Technical SEO principles • Experience with Core Web Vitals and Lighthouse optimization • Knowledge of responsive and mobile-first development • Familiarity with Schema Markup implementation • Experience with image optimization (WebP, AVIF, Lazy Loading) • Understanding of frontend performance optimization techniques • Experience with Git and version control workflows • Strong problem-solving and debugging skills Why Join SISGAIN? ✅ Work on high-impact digital projects ✅ Exposure to modern web technologies and SEO practices ✅ Supportive and collaborative work environment ✅ Excellent learning and career growth opportunities 📩 Apply Now: [hr@sisgain.com]