Senior Web Developer

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 . You’ll 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.

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.