Job Description
We are seeking a highly skilled Browser Extension Developer with expertise in Core JavaScript , up-to-date frameworks. The ideal candidate should have strong Object-Oriented Programming (OOP) skills , adhere to SOLID principles , and have a deep understanding of browser extension development across multiple platforms (Chrome, Firefox, Edge).
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nThe role involves designing and developing scalable browser extensions, implementing authentication mechanisms (JWT, OAuth, SSO), and ensuring secure, high-performance applications. You will work closely with backend services built using Flask, Django , or similar frameworks, requiring an in-depth knowledge of HTTP(s) protocols, authentication workflows, and security best practices .
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nKey Responsibilities:
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Develop, enhance, and maintain cross-browser extensions with a scalable architecture.n
Design modular, testable, and maintainable code following SOLID and OOP best practices.n
Implement authentication mechanisms such as JWT, OAuth, SSO , and manage session security.n




Ensure deep integration with browser APIs (Storage, Messaging, Web Navigation, WebRequest, WebAuthn ).n
Optimize extension performance for modern web environments (Single Page Applications, multi-frame handling).n
Work with backend systems (Flask/Django) to build APIs, handle data securely, and ensure smooth communication between frontend and backend.n
Develop and implement security measures against XSS, CSRF, CORS, and other web vulnerabilities.n
Debug and troubleshoot issues across different browsers and platforms.n
Collaborate with cross-functional teams to design and implement current features.n
Stay updated with the latest browser and web technologies, ensuring compliance with extension store policies.n

nRequired Skills & Qualifications:
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Robust expertise in JavaScript, TypeScript , and modern JS frameworks (React, Vue, or similar).n
Expert-level knowledge of browser extension development

📌 Browser Extension Developer Aligarh (India)
🏢 CareerXperts Consulting
📍 India