React.js Developer

Position Title : Frontend / Chrome Extension Developer (React + TypeScript)

Experience : 3+ years

Location : Remote

Job Role Summary :

Build and ship production-ready Chrome extensions that inject UI into existing web apps. Own content scripts, DOM integration, performance, and accessibility (WCAG 2.1 AA).

Mandatory Skills :

React, TypeScript, Chrome Extensions (MV3), Content Scripts, DOM Injection, MutationObserver, TailwindCSS/CSS Modules, Accessibility (WCAG 2.1 AA).

Key Responsibilities :

• Develop Chrome extensions using React + TypeScript.
• Inject and manage UI components within third-party web app DOMs.
• Write and maintain content scripts; handle dynamic pages via MutationObserver.
• Implement clean, responsive styling with TailwindCSS or CSS Modules.
• Ensure accessibility (WCAG 2.1 AA), keyboard navigation, and ARIA semantics.
• Integrate with APIs, manage extension permissions, storage, and messaging.
• Optimize performance, handle edge cases across sites, and write basic tests.

Required Skills :

• Strong React + TypeScript in production.
• Chrome Extension architecture: manifest v3, content/background scripts, messaging, permissions.
• DOM manipulation and safe UI injection strategies.
• MutationObserver, event delegation, handling SPA route changes.
• TailwindCSS or CSS Modules; solid CSS fundamentals.
• Accessibility (WCAG 2.1 AA) and cross-browser compatibility (Chromium/Firefox optional).
• Familiarity with build tooling (Vite/Webpack), linting, and Git.

Nice-to-Have :

• Experience with service workers, storage (sync/local), and i18n.
• Testing with Jest/RTL/Playwright.
• Security basics for extensions (CSP, sandboxing).

We are looking for a React+Iconic developer to build our cross-platform mobile application. You must be adept with React, ReactQuery, and Iconic and MUST have experience of using these technologies in a production environment.

You would be expected to also contribute to a couple of browser-based portals that support the product. You must have worked beyond JWT and used RSA and AES encryption and decryption.

You must have experience and be adept with Object Oriented Javascript and writing extensive business workflows in Javascript. You would be an expert in responsive design and should have experience converting Figma designs to reality

Requirements

• 2+ years of experience with one of the top frontend frameworks - React (preferred)/ Angular / Vue
• Solid understanding of modern CSS methodologies like SCSS, SASS
• Exposure to latest developments in UI development like PWA, Single Page Apps, Hybrid Apps, Responsive web design etc
• Working knowledge of RESTful APIs, HTTP 2, Socket Connections
• Deep understanding of Javascript topics including the V8 Engine, Async, Memory Management, Duplex Communication.
• Experienced in Unit / Integration / Visual Testing.
• Ability to develop pixel-perfect web pages from designs
• Prior startup experience is a plus

Your primary focus will be developing web applications and components. You'll implement them with the React.js framework, following generally accepted practices and workflows. You will ensure that you produce robust, secure, modular, and maintainable code. You will coordinate with other team members, including backend developers and UX/UI designers. Your commitment to team collaboration, good communication, and a quality product is crucial.

Day-to-day responsibilities include:

1. Developing new user-facing features using React.js and workflows like Redux.
2. Building reusable components and front-end libraries for future use.
3. Translating designs and wireframes in high-quality code.
4. Optimising components for maximum performance across a vast array of web-capable devices and browsers.
5. Integrating APIs for complete functionality.
6. Write technical documentation.

Responsibilities include:

1. Experience developing desktop and mobile applications for a minimum of 2 years.

2. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

3. Thorough understanding of React.js and its core principles

4. Should have experience with Redux and respective middlewares (eg. redux-thunk or redux-saga)

5. Familiarity with RESTful APIs

6. Knowledge of modern authorization mechanisms, such as JSON Web Token

7. Familiarity with modern front-end build pipelines and tools

8. Ability to understand business requirements and translate them into technical requirements

9. Knowledge of D3.js would be plus

Skills Required: HTML/CSS, Javascript, React.js, Redux.

Required Experience: 2 - 4 year of experience

Job Description:

The UI Engineer(4-7)  will design; develop front-end for AgroStar product solutions.

 Key areas of responsibility:

1. Responsible for core UI framework, implements and maintains it.
2. Operates effectively as an individual for quick turnaround of enhancements and fixes.
3. Responsible for the development of the front-end applications and components.
4. Responsible for architecture & design of the product.
5. Co-ordinate with the backend engineers & designers for requirement gathering of the product.
6. Responsible for creating POCs to design a scalable system.
7. Build reusable code and libraries for future use.
8. Responsible for quality assurance including web usability, accessibility, testing and debugging.

 As an ideal ‘Agstar UI Engineer’, you will need:

 3-7 years of prior hands-on experience in building responsive web interfaces for consumers

Significant experience with Git and GitHub including managing branches, merges, and administration

Ability to translate product requirements into functional code.

Ability to estimate the scope of work for sprint planning.

Top-notch programming skills.

Self-motivated and able to work in a small team with minimal supervision

Strong development experience on the following technologies -

HTML, CSS, Javascript, AJAX,  working with REST APIs.

Must be fluent in writing code in  ES6+ along with linters.

CSS preprocessor - SCSS/ LESS.

Front end frameworks/library such as ReactJS, Redux.

Web standards, Responsive design, and cross-browser compatibility, SEO, Accessibility.

We are looking for enthusiastic intrapreneurs who want to work at the ‘grass root’ level and want to make a difference to India’s biggest sector. We hope this excites you as much as us and looking forward to the next few conversations.