? Urgent Hiring – Digital Performance Specialist Are you passionate about building fast, scalable, and high-performing web applications? ??

SISGAIN is looking for a talented Digital Performance Specialist with expertise in Frontend Development, PHP, Technical SEO, and Website Performance Optimization. If you enjoy writing clean code, optimizing website performance, and delivering exceptional digital experiences, we'd love to have you on our team.

? Location: SISGAIN, C-109, Sector-2, Noida

? Position: Digital Performance Specialist

? Employment Type: Full-Time (On-site)

? Experience: 2–4 Years

⚡ Immediate Joiners Preferred

Key Responsibilities

- Develop, maintain, and optimize responsive websites and web applications using modern development practices.
- Build clean, scalable, and reusable frontend solutions using HTML5, CSS3, JavaScript, Bootstrap, and PHP.
- Improve website speed, Core Web Vitals, and Google Lighthouse performance.
- Implement Technical SEO best practices, Schema Markup, structured data, and SEO-friendly architecture.
- Optimize CSS, JavaScript, images (WebP/AVIF), fonts, and DOM structure for maximum performance.
- Migrate legacy jQuery functionality to modern Vanilla JavaScript where required.
- Implement Lazy Loading, Render Optimization, Code Splitting, and Mobile-First development practices.
- Ensure cross-browser compatibility and compliance with accessibility standards (ARIA/WCAG).
- Refactor and modernize existing codebases to improve scalability, maintainability, and performance.
- Collaborate with UI/UX designers, SEO specialists, and development teams to deliver high-quality solutions.




- Manage source code using Git and follow industry-standard development workflows.
- Troubleshoot, debug, and resolve frontend and website performance issues efficiently.

Required Skills

✔ 2–4 years of professional experience in Web Development.

✔ Strong expertise in HTML5, CSS3, JavaScript, and PHP (Mandatory).

✔ Hands-on experience with Bootstrap 4/5 and responsive web development.

✔ Robust understanding of Technical SEO, website architecture, and on-page optimization.

✔ Experience improving Core Web Vitals, Lighthouse scores, and website loading speed.

✔ Knowledge of frontend performance optimization techniques, including Lazy Loading, DOM optimization, and asset optimization.

✔ Familiarity with Schema Markup, structured data, and SEO best practices.

✔ Experience with image optimization techniques (WebP, AVIF, Lazy Loading).

✔ Experience with Git, version control, and collaborative development workflows.

✔ Strong analytical, debugging, communication, and problem-solving skills.

Why Join SISGAIN?

✅ Work on enterprise-grade web applications and digital transformation projects.

✅ Build high-performance, SEO-optimized websites using modern technologies.

✅ Collaborate with experienced developers on real-world client projects.

✅ Opportunity to work with cutting-edge web development and optimization techniques.

✅ Continuous learning, career growth, and a collaborative work environment.

Apply Now

? Send your updated resume to: [email protected]

? Applications are accepted via email only.

? Immediate joiners will be given preference.

? Only shortlisted candidates will be contacted.

📌 Digital Performance Specialist (Noida)
🏢 SISGAIN
📍 Noida