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).

Role Summary:

Front-end Developer who would contribute towards building a highly flexible and scalable front-end by bringing deep core technology expertise.

Job Description:

- Ensure proper offline access using service workers and PWA

- Develop components which are SEO friendly

- Have experience in server-side rendering

- Drive evolution of application performance

- Ensure project scalability by having good project architecture

Skill Requirements:

- Good experience in HTML5, CSS3, JS - React

- React native

- Angular - Redux exposure - Have handled service workers and PWA caching and updates - CSS pre-processors knowledge like sass - Knowledge of webpack, parcel, grunt etc.

-Knowledge of pre-processors like SASS/LESS, CSS-Modules.

- Architecting and automating the build process for production, using task runners or scripts (Gulp / Grunt)

-Have an eye for good UI/UX, Progressive Web Apps, Responsive Design

-Interested in writing code, actively experimenting along with learning new things.

Individual applying to the role should ideally have the following attributes

-Passionate about Frontend Development and continually follow the platform & innovations

-Strong and innovative approach to problem solving and finding solutions

-Interested in working on fast-paced

- Excellent communicator (written and verbal, formal and informal)

- Flexible and proactive/self-motivated working style with strong personal ownership of problem resolution

- Ability to multi-task under pressure and work independently with minimal supervision.

- Ability to prioritize when under pressure.

If you are working in a product based company then only apply.

WHO YOU ARE

To be successful in this role, you’ll need to have the following skills:

·         Love for coding: A fanatic about writing beautiful and scalable code.

·         Sense of analytics: Strong analytical and troubleshooting skills. Should be resourceful, innovative and inventive.

·         Dynamic: Should be comfortable in dealing with lots of moving pieces. Have exquisite attention to detail, and are comfortable learning new technologies and systems. 

·         Team player: Knack for influencing without being authoritative. Pitch in wherever the team needs help, from writing blog posts to supporting customers.

·         Accountability: High sense of ownership for your code and relentlessness to deliver projects with high business impact. 

KEY QUALIFICATIONS

·         BE/BTech in Computer Science or related field. 

·         Minimum 3+ years of UI/Frontend development and a strong understanding of building complex layouts using JavaScript, CSS and HTML.

KEY SKILLS

·         Strong computer system analysis and design skills in current methodologies and patterns including vanilla JavaScript, some experience with ReactJS, Redux, React Native, Webpack, and Typescript or similar library/tools.

·         Obsessed with WPO (Web Performance Optimization) and web/mobile performance analysis.

·         Experienced with web standards and protocols such as HTTP, DNS, TCP/IP, and socket APIs in general.

·         Familiar with web security, SEO, accessibility and internationalization.

⚒️ 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.

 About Freespace* (a.k.a. Workplace Fabric)  

Workplace Fabric develops solutions that makes workplaces intelligent. Our solutions help increase productivity of office workers while helping to lower the cost of real estate. Our Flagship 

product Freespace is installed in over 40 cities around the world and serves over 30,000 people every day. Starting with the first deployment in March 2016 we have rapidly grown with our solution being rolled out globally while continuing to stay cash positive. With successes at several blue-chip clients Workplace Fabric has carved a unique leadership position in workplace management and employee engagement SaaS solutions. 

*To find out more, follow us on social media – LinkedIn & Facebook @ workplace-fabric 

What is on our offer?  

• An absolutely action packed, fun, and demanding workplace lets our employees to thrive in a team-based environment with passion, fun, pride and teamwork as our core values. 
• We can offer you career opportunities to challenge, develop and exceed your aspirations with training and development throughout your career. 
• Life is never dull at Freespace as there is always something to learn, constantly pushing you to develop your skills and take on the next exciting challenge. 

 Profile Brief:  

You will be a creative Frontend Engineer with specialist React and visualization skills in our fast growing Analytics Team, creating dynamic dashboards to drive our client’s business insights.  

Working closely as an active team member, having ownership & accountability to develop the analytics stories, in delivering timely projects through Scrum. Working with product owners and team leads to clarifying requirements, challenge assumptions in order to ensure successful executions and push the client analytics to its best.  

Key Skills and Experience  

Required Skills: JavaScript (ES6+), React, amCharts, D3.js (or industry equivalent) 

Good to have: SQL, TypeScript, AWS, Scrum, IoT 

Experience: 4-6 years  

• A front-end and data visualization expert with 4+ years of experience  

• Ability to design widget or component based, scalable analytics dashboards 
• Expert in creating excellent user experience through quick loading dashboards and pixel-perfect design 
• Implement dashboard solutions with interactive and dynamic visualization to tell the story. 
• Hands-on and well-versed with at least one of React (preferred), Angular or Vue  
• Data processing and manipulation expert 

• Master in JavaScript with excellent understanding of asynchronous patterns  
• Comfortable with of ES6+, TypeScript & emerging web technologies  
• Able to easily comprehend and write SQL queries  
• Hands-on programmer  

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Key Behaviours  

• Have an open mind to turn business requirements into attractive yet practical visualisations. 

• Be passionate about understanding the business problem and using data to tell the stories in delivering solutions which drive client decisions. 
• Contribute to the success of the team through active participation, team work and owning project deliverables. 
• Contribute to high standards through personal delivery of data quality checks, code reviews and documentation in work and team practices. 
• Clear thinker with a systematic problem-solving approach, seeing a project through from conception to finished product. 
• Unafraid to own mistakes and be willing to challenge and feedback to enhance the team processes and solutions. 

Brief Overview:

Through your work at Vauld, you will have the opportunity to change money for the 21st century. We’re a leading cryptocurrency platform and are passionate about increasing economic freedom around the world.

We are looking for a Lead frontend engineer who has hands-on experience with Angular/React in the front end responsibilities. You'll be involved with bringing features from idea to completion and mentoring an incredibly talented group of peers.

If you are looking for a challenging work environment where you can grow and deepen your technical skills as a frontend engineer and architect, we’d love to chat with you!

Key Responsibilities:

• Working with designers, product managers to collaboratively own the front-end layer for Vauld’s web and mobile applications.
• Architect, develop, maintain, and improve our front-end libraries.

Requirements:

• You have 5 years or more of front end development experience with expertise in designing and implementing high-performance web applications.
• You are aware of Javascript design patterns and can architect a fairly complex UI without feeling the need for a framework.
• You are capable of writing high-quality code that conforms to the standards and best practices in a particular language/framework.
• You have experience building a product using a mainstream library or framework.
• Experience in any of React/AngularJs/Vue js
• You have a deep understanding of javascript coding methodologies and can rightly judge/implement solutions to complex problems.
• You love to own end to end responsibility, starting from defining the problem statement (either yourself or alongside your peers), development (PoC if needed), testing, releasing in staging & then production environment, and finally monitoring.

Preferred:

• Previous work experience in product-based (B2B/B2C) startups and fintech firms.
• Experience working with Visualisation/graphs/gaming
• Experience building for mobile platforms
• Understands the cryptocurrency landscape

Working at Vauld:

You will join a fun and intellectually stimulating work environment. If you’re excited by the idea of making a real impact and joining a team where we pride ourselves on being disruptive and ambitious, a career with Vauld is perfect for you.

Kvantum is a career-changing opportunity where you will get to learn the latest and greatest marketing analytics for CPG, Retail, eCommerce, Pharma industry (to name few). At Kvantum, you will be part of a rapidly growing company. You will be able to make your mark; you’ll help write the story.  You will get the chance to go above and beyond, being a hero to your clients and to your team. You will get the chance to make a big impact, applying your coding skills, domain expertise to ready the most innovative marketing science product to Fortune 1000 customers.

What you’ll be doing in your new job:

 As a  Front End/UI Developer at Kvantum you will be working with incredibly talented, optimistic people in an environment that fosters innovation builds trust, and frequently erupts into laughter. You are a natural developer and enjoy helping team members in coding and development. You command respect from your superiors and also from peers. In this role, you’ll demonstrate a proven track record of developing enterprise-grade web frontends using technologies such as JavaScript, Ajax, XHTML and JSON. You'll join a team of exponential application developers who are working hard to develop our next generation SaaS marketing applications.

 Primary Responsibilities includes:

• Develop Proof-of-Concept and prototype applications using new technologies and frameworks. In addition to collaborating with internal teams and clients to create innovative solutions.
• Help establish GUI best practices and JavaScript frameworks for web development.
• Provide context and guidance for integration and implementation of Front-End Interfaces
• Translate wireframes, comps, and functional requirements into functional HTML/ CSS / Javascript.
• Develop standards-compliant mark-up and code for web sites and applications
• Develop JavaScript using standard Frameworks (jQuery, etc.)
• Develop small to medium size custom JavaScript libraries for reuse across the application
• Provide technology and implementation expertise to the domain, projects, or client
• Maintain leading-edge knowledge in emerging technologies and frameworks
• Participate in knowledge sharing and lessons learned sessions from project experiences

For this position, you must have:

• Expert JavaScript/HTML/CSS coding skills.
• 2-4 years of professional experience 
• Minimum 2 years of relevant experience in javascript 
• Minimum 1 year of relevant experience in React.js
• Hands-on experience with the implementation of different design patterns
• Proven experience of developing software using the Agile/SCRUM development methodology
• Command of web standards, CSS based design, cross-browser compatibility
• Experience to optimize the performance of the web application;
• Good understanding of page rendering, DOM manipulation, caching, REST API
• Experience of developing the application using  Test-driven Development(TDD)
• Experience of working on LINUX environment
• Attention to detail, Dedication, and Problem-Solving skills.

Nice to Have: 

• Working experience in any of  these technologies and frameworks: D3.js, Node.js, Express.js, Elasticsearch, GraphQL, Redis
• Experience working with start-ups.
• A good learning curve for new technologies.

We provide a competitive stipend and abundant opportunity for talented people to grow faster. Our people (as we call them Kvants) know how to celebrate success (monthly team events, quarterly company events, employee awards, etc.) and work smart to achieve desired goals.

Disclaimer:

Outside Recruiters: Kvantum prefers to recruit candidates directly. We do not accept unsolicited agency resumes. Please do not contact Kvantum employees with unsolicited resumes. Any resume sent by an outside agency without an explicit signed Kvantum generated agency agreement in place will be considered unsolicited and will not be eligible for payment.