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).

🚀 Hiring: React Native 

⭐ Experience: 5+ Years

📍 Location: Hyderabad

⭐ Work Mode:- Hybrid

⏱️ Notice Period: Immediate Joiners

(Only immediate joiners & candidates serving notice period)

Looking for an experienced React Native with:-

✅Develop and maintain cross-platform mobile apps using React Native

✅Write clean, efficient, and reusable code

✅Experience with REST APIs, Redux, and app stores

✅Optimize app performance and troubleshoot issues

✅Integrate APIs and third-party libraries seamlessly

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• 2 to 12 years of professional experience in React Native development.
• Strong proficiency in JavaScript, TypeScript, and modern web technologies.
• Experience working with RESTful APIs and integrating third-party libraries.
• Solid understanding of mobile app architecture and design patterns.
• Knowledge of mobile UI/UX best practices and principles.
• Familiarity with version control systems such as Git.

• Ability to understand business requirements and translate them into technical requirements
• Write, test, and release world-class, production-ready code
• Ensure that the data needs of the UI are fulfilled with efficient database queries
• Ensure compliance with software engineering standards and processes defined at Simform.
• Optimizing components for maximum performance across a vast array of web enabled devices and browsers

• Solid hands-on experience with ReactJS frontend development with modern practices. 
• HTML5, JavaScript, ES6, and TypeScript expertise
• Experience with   React .js / D3.js / GraphQL is a plus
• Proficiency with CSS3, Sass, and Mixins - knowledge of GSAP would be a plus
• Familiarity with RESTful APIs integration 
• Experience with common front-end development tools such as Babel, Webpack, NPM, Bower, Gulp etc. 
• Familiarity with code versioning tools such as Git, SVN, Github, Bitbucket

About Our Client

Our client is a Currency Exchange in India. Built with user experience and security in mind, Our Client provides instant fiat to crypto conversions with zero fees, so that users can have access to a diverse suite of financial products and services that are backed by industry-leading security processes and insurance protection. Our Client aims to be the global gateway to cryptocurrencies. Its proprietary liquidity aggregation model provides its users with access to liquidity from leading global crypto exchanges. Our Client is recognized and awarded for its contribution to the Indian emerging tech space.

Why Our Client?

Cryptocurrency Traders are looking for a strong global platform that can help them trade faster, better and smarter. We are building a platform that can solve their needs. The opportunity is big, and the journey is tough. Now that’s a challenge that needs to be addressed. You do that. You are phenomenal in solving these complex challenges. You help our team do more.


As a Front End Developer - Angular, you do all of the above and more. You make a difference.

What will I do?

• Delivering a complete front end application
  • Ensuring high performance on mobile and desktop
  • Writing tested, idiomatic, and documented JavaScript, HTML, and CSS
  • Coordinating the workflow between the graphic designer, the HTML coder, and yourself
  • Cooperating with the back-end developer in the process of building the RESTful API
  • Communicating with external web services
  • Ensure high-quality graphic standards and brand consistency
  • Stay up-to-date on emerging technologies
  • Write functional requirement documents and guides

What skills should I have?

- Must have 2+ years of experience in frontend development with an internet startup.
- Deep knowledge of Angular practices and commonly used modules based on extensive work experience
- Proficiency with JavaScript and HTML5
- Extensive knowledge of CSS and JS methods for providing performance visual effects and keeping the frame rate above 30fps at all times
- Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system
- Creating custom, general use modules and components which extend the elements and modules of core Angular
- Ability to understand business requirements and translate them into technical requirements

Responsibilities:

• Develop high-quality, reusable, and efficient frontend components using React.js.
• Collaborate closely with UI/UX designers and backend developers to translate design concepts into functional interfaces.
• Participate in architectural discussions and contribute to the overall frontend design and development strategy.
• Optimize applications for maximum speed and scalability, ensuring exceptional performance across various devices and browsers.
• Identify and address performance bottlenecks, troubleshooting and debugging frontend-related issues as they arise.
• Stay current with industry trends, best practices, and emerging technologies, and recommend their incorporation into projects when applicable.
• Mentor and provide guidance to junior developers, fostering a culture of continuous learning and skill development.
• Collaborate with the QA team to ensure the delivery of high-quality software through rigorous testing and code reviews.
• Contribute to the documentation of frontend architecture, coding standards, and best practices.

Qualifications:

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
• Minimum of 3 years of professional experience as a React Developer.
• Strong proficiency in React.js and its core principles, with a solid understanding of state management (e.g., Redux) and component lifecycle.
• Proficiency in JavaScript, HTML5, and CSS3, Bootstrap, JQuery with an eye for design and user experience.
• Knowledge of version control systems, particularly Git.
• Ability to write clean, maintainable, and well-documented code.
• Strong problem-solving skills and the ability to work effectively in a collaborative team environment.
• Excellent communication and interpersonal skills.

Job Role- Senior Front-End Developer

Location- Remote (WFH)

Experience- 5+ years

Work Shift- Uk Shift

Note- must have a strong command of both written and spoken English.

We are looking for a number of strong developers - with strong front-end experience.

We are a full-service Digital Agency & Software Development Company based in UK. We develop high end bespoke software & applications, mobile apps and websites across all sectors, both commercial and not-for-profit.

• 5+ years professional experience
• Exceptional proficiency in building component-based web apps in JavaScript and TypeScript using Vue 2 & 3. 
• Expertise in client-side state management tools, specifically Vuex.
• Good understanding of client-side app architecture.
• Excellent knowledge of CSS and experience in writing stylesheets in SASS
• Integrating web service calls/remote data/APIs
• Proficient understanding of git
• Clear and concise written and oral English communication skills.
• Compilation, bundling, and packaging via Webpack, Babel, etc.
• Strong UI/UX skills
• Node.js and npm
• React Native experience seen as a bonus

• Working closely with your team to develop and deliver high-end solutions using Agile methodologies
• Translating designs into pixel perfect elegant Vue.js code
• Coding and deploying new features
• Ensuring our web applications and components are accessible, responsive, performant, and bug-free for recent versions of web browsers across all popular platforms.
• Ensuring all code is readable, well documented and testable
• Working on some new developments, some significant enhancements to existing system and some support activities

Tech Stack :

PHP, HTML, CSS, JAVASCRIPT, AJAX, REST API, JQUERY, POSTGRESQL/MYSQL, MVC FRAMEWORK.

Responsibilities:

• Design and build advanced applications
• Work with outside data sources and APIs
• Unit-test code for robustness, including edge cases, usability, and general reliability
• Work on bug fixing and improving application performance
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability
• Implementation of security and data protection
• Able to understand and create Documentation according to Client requirement.

Requirements:

• Ability to write clean, commented and maintainable code.
• Basic understanding of MVC frameworks.
• Basic understanding of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3.
• Proper understanding of OOPS concepts.
• Understanding differences between multiple delivery platforms such as mobile vs desktop, and optimizing output to match the specific platform.
• Creating database schemas that represent and support business processes.
• Proficient knowledge of a back-end programming.
• Proficient understanding of code versioning tools, such as Git.
• Proven software development experience and Web application development skills.
• Understanding of startup culture.
• Good team player, Quick learner.