X.Arterian - Senior Web Developer - TypeScript/Javascript

5 days ago

Gurugram, India X.Arterian Full time

Description : About the Role :We are looking for a skilled and experienced Senior Web Developer to lead the development of our real-time messaging web application. Youll be responsible for building a high-performance, responsive, and secure web client that mirrors the mobile experience complete with messaging, notifications, media sharing, and end-to-end encryption.Youll work closely with the product, design, backend, and mobile teams to deliver a world-class communication experience that works across devices and platforms.Key Responsibilities : 1. Frontend Architecture & Development :- Design and implement a performant, modular, and scalable web app using React, TypeScript, Next.js, or other modern frameworks.- Build and maintain core messaging features : real-time chat, group messaging, media sharing, typing indicators, read receipts, and notifications.- Create reusable UI components and ensure consistent design across the platform.2. Real-Time Communication :- Integrate WebSockets, WebRTC, or similar real-time communication protocols to support live chat and media sharing.- Ensure message syncing, delivery tracking, offline handling, and real-time UI updates.3. Security & Privacy :- Collaborate with backend/security teams to implement end-to-end encryption, secure session management, and authentication workflows.- Ensure secure data handling in the browser local storage, cookies, tokens, and message caching.4. Cross-Platform Optimization :- Optimize the app for performance, accessibility, and responsiveness across browsers and screen sizes.- Ensure smooth operation on Chrome, Firefox, Safari, and Edge.5. Testing & Quality Assurance :- Write unit, integration, and end-to-end tests using tools like Jest, Cypress, or Playwright.- Participate in code reviews, test automation, and bug triaging.6. Collaboration & Deployment :- Work with backend (Java/Erlang) and mobile teams (iOS/Android) to align feature development.- Integrate frontend with RESTful and WebSocket APIs.- Contribute to CI/CD pipelines, release management, and production monitoring.Required Qualifications : - 6+ years of professional experience in web development, building production-grade applications.- Proficient in JavaScript/TypeScript and modern frontend frameworks (preferably React and Next).- Experience with real-time communication using WebSockets, Firebase, or similar technologies.- Strong understanding of HTML5, CSS3, Responsive Design, and Cross-Browser Compatibility.- Familiarity with REST APIs, WebSocket APIs, and frontend state management (Redux, Zustand, etc.).- Good grasp of security principles XSS, CSRF, CQRS, HTTPS, token handling, and secure storage.- Experience with performance profiling, lazy loading, code-splitting, and network optimization.Preferred Qualifications : - Prior experience in messaging platforms, chat applications, or collaboration tools.- Familiarity with end-to-end encryption, cryptography libraries (e.g., libsodium, OpenPGP.js).- Experience with Service Workers, IndexedDB, or Progressive Web Apps (PWA).- Exposure to WebRTC, media streaming, or video/audio calling libraries.- Contributions to open-source projects or strong personal GitHub portfolio.- Experience working in agile teams with tools like Jira, Figma, and Git. (ref:hirist.tech)

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