Job Title: Senior Frontend Developer React & Material UI Location: Gurgaon Experience Level: Senior Job Summary: We are seeking a Senior Frontend Developer with expertise in React and Material UI to build responsive, secure, and pixel-perfect mobile and web applications. The ideal candidate will take high-fidelity designs from Sketch, Figma, or similar tools and convert them into high-quality code with a strong focus on security, performance, and scalability. You should be passionate about clean UI, secure development practices, and responsive design. Key Responsibilities: Develop modern, responsive, and accessible web interfaces using React, Material UI, HTML5, and CSS3 Convert high-fidelity UI/UX designs from Sketch, Figma, or similar tools into fully functional, pixel-perfect components Ensure cross-browser compatibility and responsiveness across devices Write clean, maintainable code that adheres to secure coding best practices, including: Preventing Cross-Site Scripting (XSS) through safe input handling and output encoding Avoiding Cross-Site Request Forgery (CSRF) through proper use of tokens and headers Managing authentication tokens securely (e.g., HttpOnly, SameSite cookies) Validating inputs and avoiding client-side trust assumptions Collaborate with product, backend, and QA teams to ensure seamless integration and high performance Optimize components for speed, accessibility, and scalability Participate in code reviews and advocate for quality, performance, and security Required Skills and Experience: 5+ years of professional experience in frontend development with advanced knowledge of React.js Strong expertise in Material UI, HTML5, CSS3, and JavaScript (ES6+) Proven ability to build responsive layouts CSS Grid, and media queries Deep understanding of secure frontend development and web vulnerabilities (based on OWASP guidelines) Familiarity with tools for code security and performance profiling Experience integrating with REST APIs Version control with Git Preferred Qualifications: Experience with TypeScript Familiarity with frontend testing (e.g., Jest, React Testing Library) Exposure to CI/CD tools and performance monitoring services (e.g., Lighthouse, Sentry) What We Offer: A modern, supportive, and collaborative development culture Challenging projects and opportunities to influence product direction