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).

JD : 

React. Js Developer

Skill Sets: HTML, CSS, JS , Typescript, Nextjs

Location : Bangalore , Complete WFO

Address: 

Embassy Tech Village Rd, Devarabisanahalli, Bellandur, Bengaluru, Karnataka 560103, India.

Candidate Persona:

Need Product based Background Folks only or someone who has worked on product projects. 

Resume is extremely crucial here, if roles and responsibilities, Education details and company names are not mentioned properly in utmost details then they will not be considered further.

Communication skills- Good 

Btech graduated ONLY

Skills that should be mentioned in the CV - HTML, css, js, typescript, Data structures and algorithm. 

Candidates should have a linkedin ID. 

Candidates should have some leet code or hackerrank links (preferred)

Note : candidates who are ready for all the rounds can apply.

⚒️ 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.

Job title: React.js Developer 

Location: Gurugram (Onsite)

Notice: Immediate joiner 

Responsibilities:

• Meeting with the development team to discuss user interface ideas and applications.

• Reviewing application requirements and interface designs.Identifying web-based user interactions.

• Developing and implementing highly responsive user interface components using react concepts.

• Writing application interface codes using JavaScript following react.js workflows.

• Troubleshooting interface software and debugging application codes.

• Developing and implementing front-end architecture to support user interface concepts.

• Monitoring and improving front-end performance.

• Documenting application changes and developing updates.

Requirements:

• Bachelor’s degree in computer science, information technology, or a similar field.

• Previous experience working as a react.js developer.

• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.

• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.

• Experience with user interface design.

• Knowledge of performance testing frameworks including Mocha and Jest.

• Experience with browser-based debugging and performance testing software.

• Excellent troubleshooting skills.

• Good project management skills.

• Basic knowledge of Data Structure and Algorithm required

Responsibilities

• Build applications using JavaScript frameworks such as React.js, Vue.js or svelte.js

• Build reusable UI components, ensuring that UI code base is scalable and maintainable

• Ensure the technical feasibility of UI/UX designs

• Optimize application for maximum speed and scalability

• Good in writing unit test cases, and can follow test driven development approach

• Participate in user experience design and architecture initiatives

• Collaborate with other team members and stakeholders to ensure smooth delivery and elicit new

requirements

• Perform troubleshooting steps, if any, in the phase of implementation, customization, and

configuration

• Having good debugging skills and proficiency in tool to build next-generation web apps

Mandatory Skills

• Knowledge of Functional and OO JavaScript/ES6

• Built web Applications using HTML5, CSS3, and JavaScript with Frameworks like React.js(Hooks

and context API), Vue.Js and svelte.js

• Basic understanding of Typescript and type language concepts

• Clear fundamental understanding of server-side rendered apps, experience with frameworks like

Next,js or Nuxt.js is the Best

• Good understanding of lib and frameworks like Webpack (4.0), lodash, any charting lib like d3.js or

Victory

• Expertise in using JavaScript state Management libraries such as Redux or Mobx

• Prior experience in building responsive design layouts using a formal framework like Material UI.

• Familiarity with best practices (web security concepts, ensuring browser & device compatibility,

etc.)

• Experience in development and debugging tools for cross-browser issues

• Working knowledge of integrating with RESTful APIs for server-side functionality

• Ability to work well individually and in a group setting, under pressure and deadlines

Requirements

• B.Tech/ B.S. or M.Tech/ M.S. in Computer Science, IT or related field.

• 5-8 years of experience.

Desirable Skills

• Hands-on experience with using Git (handling branching and merging), any DevOps pipeline,

• Experience with Agile methodologies

We are one of the Fast-Growing Software System Integrator and Software Services Company focused on Communications IT. We combine our deep insight in communication industry, unmatched

technical expertise and comprehensive service portfolio to deliver to superior value to our Telecom Services Providers, ISVs and OEM customers. Since our beginning in 2006, we have grown in size and

scale. We bring in unmatched passion and commitment into each new engagement to make it a success. These qualities have earned us respect from customers across the world. Some of the most

well-known communication service providers trust us to design and manage their business-critical IT systems and processes.

Role: Angular Developer
Experience: 3 - 6 years.

• Full stack product engineering i.e. design, engineer, test, deploy, monitor, and maintain software components to QA and Production environments
• Design & engineer product experience & APIs conforming to defined quality, maintainability, scalability, and performance KPIs
• Build, maintain, and improve continuous integration and delivery lifecycle processes
• Automation of repetitive engineering and production activities

• Engineering in computer science
• 3+ year of relevant experience in product engineering with expertise in building frameworks, reusable components, and APIs
• Expert level skills in analytical & problem solving
• Strong programming and engineering fundamentals like Data Structures,
• Design Principles, TDD, and Performance Tuning to build scalable and performance optimized product
• Ability to communicate clearly in English

• HTML5
• CSS3 (Sass/Less)
• JQuery
• JavaScript (ES6) / TypeScript
• React.js
• Version Control : Git

Responsibilities

• Work on a full product development lifecycle from requirement gathering, product design, development, to roll out and maintenance
• Effectively collaborate with multiple teams and stakeholders including product and design
• Own the delivery of multiple features of the product end to end 
• Advocate best development practices such as continuous integration/continuous delivery, automation (testing and infrastructure) and code modularity, extensibility, quality
• Experience in building Websites from Scratch is a big plus

Primary Skills:

• Min 6+ Years in Web Application Development
• Write clean, solid and testable code while keeping the user experience fast and reliable
• Strong understanding of HTML, CSS, JS, JQuery, React, Redux 
• Proficient in Web Interface designing
• Experience in developing reusable UI components
• Deep functional knowledge or hands on design experience with Web Services 

Strong grasp of security principles and how they apply to E-Commerce websites

LOOKING FOR IMMEDIATE JOINERS OR 30DAYS FROM PRODUCT/ECOMM COMPANIES