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).

Job Summary: Wissen Technology is hiring a React Developer to join our dynamic team. The ideal candidate will be responsible for developing and implementing user-centric features on web platforms to enhance overall experience and usability.

Experience: 7+ years

Location: Pune

Mode of Work: Hybrid

Key Responsibilities:

• Develop and implement user-centric features on web platforms to enhance overall experience and usability.
• Collaborate with designers, backend engineers, and product teams to deliver cohesive and scalable products.
• Solve diverse technical and integration challenges by building efficient solutions that connect with automation systems.
• Apply best practices to create reusable, testable, and maintainable components and frameworks.
• Optimize application performance and ensure responsive and adaptive design across multiple devices and browsers.

Qualifications and Required Skills:

• Strong understanding of modern front-end development frameworks and architecture.
• Hands-on experience building interactive, high-performance web applications.
• Proficiency with:
• React, Redux, HTML, CSS, JavaScript
• Build tools like Vite, CSS preprocessors such as Less/Sass
• Solid grasp of UI/UX principles, responsive design, and accessibility standards.
• Experience integrating front-end solutions with REST APIs or automation systems is a plus.
• Strong problem-solving skills and a collaborative mindset.

Wissen Sites:

• Website: www.wissen.com
• LinkedIn: https://www.linkedin.com/company/wissen-technology
• Wissen Leadership: https://www.wissen.com/company/leadership-team/
• Wissen Live: https://www.linkedin.com/company/wissen-technology/posts/feedView=All
• Wissen Thought Leadership: https://www.wissen.com/articles/

If you have any more details to add or need further assistance, feel free to contact

Required Skills & Qualifications

• Proven experience in Webflow and WordPress development.
• Strong knowledge of HTML5, CSS3, JavaScript, and responsive design.
• Familiarity with PHP, MySQL, and WordPress theme/plugin development.
• Understanding of SEO principles and website optimization techniques.
• Experience with cross-browser compatibility and mobile-first design.
• Ability to work with Figma/Adobe XD for design-to-development workflows.

Strong problem-solving skills and attention to detail

We are seeking a highly skilled Frontend Tech Lead with extensive experience in React.js developmentand team leadership. As a Tech Lead, you will be responsible for leading a team of developers while alsocontributing to the development of high-quality software solutions using React.js and related technologies.

Responsibilities :

● Lead a team of software developers in the design, development, and implementation of React.js-based software solutions.

● Provide technical guidance and mentorship to team members, ensuring best practices are followed and code quality is maintained.

● Collaborate with product managers, designers, and other stakeholders to understand requirements and translate them into technical solutions.

● Architect and design scalable, maintainable, and high-performance software systems using React.js and related technologies.

● Implement and maintain coding standards, code reviews, and other processes to ensure high-quality deliverables.

● Stay up-to-date with the latest trends and best practices in React.js development and incorporate them into the development process.

● Troubleshoot and debug complex technical issues, providing timely resolutions to ensure project deadlines are met.

● Work closely with cross-functional teams to ensure alignment on project goals, timelines, and deliverables.

● Participate in Agile/Scrum ceremonies such as sprint planning, daily stand-ups, and retrospectives.

Requirements :

● Bachelor's degree in Computer Science, Engineering, or related field.

● Minimum of 8 years of professional experience in software development.

● Extensive hands-on experience with React.js and related libraries/frameworks.

● Minimum 2-3 years of experience in leading and managing software development teams, with a proven track record of overseeing teams of at least 5-6 members.

● Strong understanding of software engineering principles, design patterns, and best practices.

● Experience with implementing or contributing to design systems, which helps maintain consistency across large applications.

● Experience with modern front-end development tools and workflows.

● Proficiency in HTML, CSS, and JavaScript.

● Excellent problem-solving and analytical skills.

● Strong communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams.

● Understanding and application of security best practices in React applications, such as preventing XSS attacks, managing authentication/authorization securely, and understanding common vulnerabilities.

● Experience with Agile/Scrum methodologies is a plus.

⚒️ About The Role

We're looking for an experienced Frontend Engineer to breathe life into the user interface of our product. Understanding that meticulous engineering not only drives the user experience but also influences our product development process, we aim to prioritize this role from Day 1

🚀 This Role

As a Founding Frontend Engineer at Upskillr.ai, your contributions will be vital in refining the user experience of our AGI Platform. You will also participate in evaluating user interfaces and crafting the frontend landscape for future products. Further:

• Creating and optimizing our frontend infrastructure, rendering captivating user experiences through your engineering prowess.
• Utilizing your specialized skills to navigate frontend development, from designing responsive layouts to implementing interactive features.
• Collaborating closely with founders on product development and with designers for harmonious UI/UX integration.

What you'll work on:

• Leading feature development from user research to production in collaboration with designers and AI engineers.
• Building responsive UI components using React principles and JavaScript.
• Establishing a flexible frontend architecture with supportive APIs.
• Demonstrating expertise in front-end performance optimization and contemporary standards.
• Pioneering the engineering and integration of optimal human ↔ AI interfaces for enterprise operations. We're trailblazing in a fresh domain of engineering that previously didn't exist. The onus is on us to explore and incorporate a novel interface that resonates with our users.

Technical Skills:

• Profound expertise in JavaScript and React, along with robust front-end coding abilities and an understanding of progressive web applications.
• Must possess skills in HTML5, CSS3, JavaScript, React.js, Webpack, Enzyme, Redux, Flux, GIT, HTTP(s), Terminal, Build Tools, State Management, Type Checkers, Form Helpers, Routing, REST API, GraphQL, Utility Libraries, Internationalization, Server-Side Rendering, and Backend Framework Integration.
• Proficiency in browser-based debugging and performance testing.
• Experience in performance tuning, usability enhancement, automation, and continuous integration leveraging test-driven development methodologies (BDD/TDD).

🕵️ What We Look For

• Self-starters prepared to lead significant initiatives.
• Avid curiosity and passion for technology.
• Familiarity with UI/UX principles from an engineering perspective.
• Excellent communication abilities

😁 Perks & Benefits

🤝 Top-of-the-market compensation — At Upskillr.ai, we will offer top-of-the-market (90th+ percentile) compensation in both cash and equity. We believe that the best candidates deserve the best compensation, and we will ensure that it happens.

💯 High impact — You’ll be joining as a founding member of the team, and as such you will have a high level of ownership and influence over the direction of the company.

🧠 The gains — Collaborate closely with the founders. Experience the excitement of a rapidly expanding startup.

About Us

We build LLM Based Tools and Services for Enterprises.

Upskillr.ai, started by Aditya Saxena and Vikram Pandya, is a dynamic knowledge platform that combines the best of education and knowledge management powered by AGI.

What We Do

We are committed to delivering innovative and comprehensive solutions that address the diverse learning needs of individuals and organizations. The company is dedicated to leveraging Artificial General Intelligence (AGI), to provide personalized and tailored support, ensuring the success and satisfaction of its users.

What do we do?

About MobileFirst: Mobile design & development studio focusing on great mobile app experiences. We have great exposure working with Startups, Enterprises and Design Studios. MobileFirst has worked with customers from the USA, India, UK, Kenya, and Israel.

We have catered to clients in Automobiles, Paints, Fashion, Sports, Transportation, Food, Music, Coupons, Smart Parking, Uber for X, etc.
 

What are we looking for?

• 1+ yr experience with React JS & React Web UI
• MEAN Stack or MERN Stack Experience is required
• MongoDB, Express JS, Angular JS & NodeJS  
• Understanding of React & Redux is required
• Experience with MongoDB, Postgresql, MySQL database
• Comfortable in a work environment that requires strong problem-solving skills and independent self-direction coupled with team collaboration and open communication
• Understanding of RESTful web services
• Work in a fast-paced, creative atmosphere to develop new ideas that adapt to evolving user needs
• Experience using Git / GitHub

What should you have?

• Amazing debugging skills and problem-solving abilities
• Knowledge of Opensource Libraries & frameworks  
• Command over algorithms, design trends & knowledge about popular applications on App 

Who are we looking for?

Tech Savvy. Fast learner. Leader. 
We don't see your college degree or we don't care if you are a dropout. 

Job Perks

• Great Fun Learning exposure
• Training and Seminars on new Technologies
• Startup Experience
• Flexible timings and "work from home" options

Responsibilities

As a Frontend Developer (Next.js) you will be responsible for -

•  Building the Complete UI/UX of our web application from scratch.
• Work closely with the Backend Engineer to integrate the algorithmic output from the backend REST APIs.
• Work closely with the product owners to create dynamic infographics with intuitive user controls.
• Work closely with our web Designer for bringing design to life.
• Participate in UAT, troubleshoot, bugs and application integration issues
• Create and maintain documentation related to the developed processes and applications

Qualification & Experience

• 2-3 years of demonstrable experience designing, building and working as a Next.js Developer for enterprise web application
• Ideally, this would include the following:
• Expert-level proficiency with Next.js and all its concepts
• Expert-level proficiency with JavaScript (ES6), HTML5 & CSS
• Expert-level proficiency with ReactJS and all its concepts like Hooks and Redux
• Familiarity with Python, Django, and Django Rest Framework
• Understanding of REST concepts and interacting with REST APIs
• Deep understanding of a few UI concepts:
• Cross-browser compatibility and implementing the responsive web design
• Familiarity with common JS visualization libraries built using D3, Chart.js, Highcharts, etc.
• Understanding of Next.js coding Standards
• Experience working with UX designers and bringing design to life
• In addition, the ideal candidate would have great problem-solving skills and familiarity with code versioning tools such as Github

We are looking for a talented Front-end Engineer capable frontend developer to join OneFin!

Responsibilities

• Work closely with the design and backend team to build and develop web applications for our forward-thinking products.
• Design large-scale systems with high complexity to support our high throughput applications.
• Understand how to leverage infrastructure for solving such large-scale problems.
• Develop tools and contribute to open source wherever possible.
• Adopt problem-solving as a way of life - always go to the root cause.
• Develop scalable front-end engineering, for the largest FinTech companies in India who use our product.
• Actively think about improving UX and UI.
• Collaborate with the team to discuss and implement ideas.
• Build responsive, robust, and optimized applications.

• Professional development experience with Angular 10
• At least 1-3 years of JavaScript development experience for web applications.
• Strong eye for design, UI, and UX.
• Passion for front-end development.
• Willingness to learn and experiment with new technologies.