Senior Web Developer

About the Role

Senior

You’ll 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.