
Job overview:
We are seeking an experienced React.js Developer who is passionate about crafting high-quality, scalable, and performant front-end applications. The ideal candidate should have strong hands-on experience in modern JavaScript frameworks, UI development, and a keen eye for detail.
Key Responsibilities
- Develop and maintain responsive web applications using React.js, JavaScript (ES6+), HTML5, and CSS3.
- Build scalable and reusable UI components with React Hooks, Redux/Context API, and component-driven architecture.
- Optimize app performance to ensure fast load times, smooth interactions, and cross-browser compatibility.
- Write clean, modular, well-documented code following industry best practices and Git-based workflows.
- Troubleshoot, debug, and enhance existing features based on user feedback, analytics, and technical requirements.
- Integrate RESTful APIs and collaborate closely with backend engineers, designers, and product managers.
- Stay updated with emerging trends, tools, and best practices in front-end development to continuously improve the codebase and architecture.
Required Skills
- 4+ years of hands-on experience in React.js and JavaScript (ES6+).
- Strong understanding of HTML5, CSS3, Flexbox, Responsive Design, and UI frameworks (Tailwind/Bootstrap).
- Experience with state management using Redux, Redux Toolkit, or Context API.
- Hands-on experience with REST APIs, asynchronous programming, and front-end build tools (Webpack, Babel, npm/yarn).
- Good understanding of version control using Git.
- Ability to write efficient, scalable, and re-usable components following best practices.

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Job Description:
- Deep understanding of JS basics and advanced features (ES6) (5+ years)
- Deep understanding of basic and advanced HTML5 / CSS3 features (5+ years)
- Hands on experience developing scalable applications using React JS (preferably using functional components) (2+ years)
- Proficiency in using hooks based approach in react development
- Hands on experience developing UI components using Material UI for React JS (2+ years)
- Experience with any of the state management libraries for React JS – Redux, Context API, Mobx etc
- Experience with unit testing using Jest, Enzyme, React Testing Library etc
- Experience with responsive design, progressive web apps and accessibility.
- Knowledge about platform tools such as NPM, Git command line tool and AWS.
Required Skills:
• He/she should have 3+ years of experience in Software Development
• Proficient experience working with React Js.
• Strong experience in JavaScript and Typescript
• Proficient in HTML5, CSS3, Bootstrap, Kendo & jQuery
• Proficient understanding of code versioning tools, such as Git.
• Strong understanding of the web development cycle and programming techniques and tools.
• Strong problem solving, verbal and written communication skills.
• Should have strong knowledge on integration with backend API’s
# Hiring
We are looking for a Lead react Js developer
Hands-on knowledge of UI Development, Rest API, JavaScript, React js, etc
Notice period - Immediate joiner /15 Days
Qualification: B.Tech / MCA / M.Tech
Experience: 4 years- 8 years
Location: Pune / on-site
Overview
We are looking for a Senior JavaScript developer who is well versed with React and TypeScript. 2-5 years experience mandatory! We look for individuals with a deep knowledge of JavaScript, CSS, and HTML, who are not only comfortable in writing custom JavaScript but also know when to apply off-the-shelf solutions to a problem. Individuals who do well on this team are self-motivated engineers with a passion for user experience & innovation. We currently work with TypeScript, React, GraphQL, and Node.js, however the ability to adapt with changing technology is an important quality that we are looking for. Responsibilities Developing new user-facing features using TypeScript/React.js Building reusable components and front-end libraries for future use Translating designs and wireframes into high quality code Optimising components for maximum performance across a vast array of web-capable devices and browsers API integrations Skills Thorough understanding of Typescript & React.js and its core principles Experience with popular React.js workflows (such as Redux) Familiarity with newer specifications of EcmaScript Experience with data structure libraries (e.g., Immutable.js) Knowledge of isomorphic React is a plus Familiarity with GraphQL/RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Experience with common front-end development tools such as Babel, Webpack, NPM, Yarn etc. WebRTC knowledge is a plus.
2. Following best practices in code quality
3. Working on version management
Job Description:
We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure.
Responsibilities:
- Developing new user-facing features using React.js
- Building reusable components and front-end libraries for future use
- Translating designs and wireframes into high quality code
- Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
Skills:
- Familiarity with RESTful APIs
- Familiarity with modern front-end build pipelines and tools
- Experience with popular React.js workflows (such as Flux or Redux)
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.
Requirements and Qualifications
- Bachelor’s or master degree in engineering
- 4+ years of work experience.
- Proficient understanding of HTML, CSS, and Javascript
- Proficient understanding of ReactJs or similar library
- Good understanding of responsive web development
- Good understanding of SEO and analytics
- Ability to break the business problem into smaller features
- Ability to access the technical feasibility of UI/UX designs
- Build reusable code and libraries for future use
- Optimize application for maximum speed and scalability
- Proficient understanding of cross-browser compatibility
We are cloud enthusiasts on a mission to help cloud engineers build their own cloud management platform without the need for coding or integrating other tools.
We are looking for an experienced UI Developer to work with us as a freelancer. You will be part of the core development team working on state-of-the-art advanced cloud-based technologies.
RESPONSIBILITIES:
- Understand and improve the user experience across the site
- Make web apps responsive and pixel perfect
- Perform unit testing and automation testing of the features developed
REQUIRED SKILLS/EXPERIENCE:
- Proficient and good experience in HTML5, CSS3, Javascript, Typescript, Bootstrap 4, React.js.
- 4-8 years of relevant working experience
- Strong understanding of Object-oriented concepts and ECMA2015 standards
- Experience in identifying and implementing page performance improvements
- Attention to detail, and ability to multitask and meet deadlines
- Passion for quality and engineering excellence at scale and code quality
- Strong communication and conflict resolution skills










