React.js Developer

MUST-HAVES:

• 5+ years of professional experience in web development.
• Strong proficiency in React.js and the Next.js framework.
• Solid understanding of JavaScript (ES6+), HTML5, Tailwind and TypeScript.
• Experience with server-side rendering (SSR) and static site generation (SSG).
• Familiarity with state management libraries (e.g., Redux, Context API).
• Proficient with version control systems like Git.
• Experience with modern build tools and package managers (e.g., Webpack, Babel, NPM/Yarn).
• Familiarity with API integration (REST, GraphQL).
• Strong understanding of web performance optimization techniques.
• Knowledge of testing frameworks (e.g., Playwright, Jest, Cypress).
• Ability to work in an Agile environment, collaborate with cross-functional teams, and deliver high-quality code under tight deadlines.

SKILLS: REACT, REACT NATIVE, PLATFORM INTEGRATION, JAVASCRIPT

Notice Period: 0-15 Days only

Additional Guidelines:

Interview process: - 2 Technical round + 1 Client round

3 days in office, Hybrid model.

JOB DESCRIPTION:

We are seeking a highly skilled Senior Web Developer with deep expertise in React and Next.js to join our growing team. The ideal candidate will have extensive experience in building high-quality, scalable web applications and will take ownership of both frontend development and architecture. As a Senior Developer, you will collaborate closely with product managers, designers, and other developers to deliver robust and performant solutions. Your ability to solve complex problems, optimize web performance, and mentor junior developers will be key to success in this role.

KEY RESPONSIBILITIES:

• Design, develop, and maintain web applications using React and Next.js.
• Architect and optimize web pages for speed and scalability.
• Build reusable components and front-end libraries for future use.
• Implement server-side rendering and static site generation using Next.js.
• Collaborate with the backend team to integrate APIs and ensure seamless front-end and back-end communication.
• Ensure the technical feasibility of UI/UX designs and implement pixel-perfect user interfaces.
• Work with product teams to build features that improve user engagement and satisfaction.
• Troubleshoot, debug, and upgrade existing systems.
• Provide technical leadership and mentorship to junior developers.
• Stay up-to-date with the latest web development trends, frameworks, and tools.

REQUIREMENTS:

• 5+ years of professional experience in web development.
• Strong proficiency in React.js and the Next.js framework.
• Solid understanding of JavaScript (ES6+), HTML5, Tailwind and TypeScript.
• Experience with server-side rendering (SSR)and static site generation (SSG).
• Familiarity with state management libraries (e.g., Redux, Context API).
• Proficient with version control systems like Git.
• Experience with modern build tools and package managers (e.g., Webpack, Babel, NPM/Yarn).
• Familiarity with API integration (REST, GraphQL).
• Strong understanding of web performance optimization techniques.
• Knowledge of testing frameworks (e.g., Playwright, Jest, Cypress).
• Ability to work in an Agile environment, collaborate with cross-functional teams, and deliver high-quality code under tight deadlines.

PREFERRED QUALIFICATIONS:

• Experience with Next.js API routes and serverless functions.
• Familiarity with cloud platforms (e.g., AWS, Vercel) and CI/CD pipelines.
• Experience with modern CSS frameworks (e.g., Tailwind, Styled Components).
• Knowledge of SEO best practices for React and Next.js applications.
• Contributions to open-source projects or a portfolio of personal projects.

Role: UI Lead

Exp: 8+ Years

CTC: up to 30 LPA

Mode of Interview: 2 rounds onsite + 2 online

Key Responsibilities: 

• Lead the UI team in designing and developing scalable, responsive, and performant user interface components. 
• Define and enforce UI coding standards, best practices, and guidelines. 
• Collaborate with UX designers to translate wireframes and prototypes into high-quality code. 
• Work closely with product managers to understand requirements and translate them into technical solutions. 
• Mentor and coach UI developers, providing guidance and support on technical challenges. 
• Conduct code reviews to ensure code quality, performance, and adherence to design principles. 
• Stay updated with the latest UI trends, technologies, and best practices. 
• Drive innovation and continuous improvement within the UI development process. 

Required Skills and Qualifications: 

• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent work experience). 
• Proven experience (>8 years) as a UI developer with expertise in HTML5, CSS3, JavaScript/TypeScript 
• Proven experience in front-end frameworks React (must), Angular(good to have), Vue.js(good to have). 
• Solid understanding of responsive web design, accessibility, and cross-browser compatibility. 
• Experience leading a team of UI developers in an agile environment. 
• Strong problem-solving skills and ability to troubleshoot complex issues. 
• Excellent communication skills with the ability to collaborate effectively with cross-functional teams. 

1. We are looking for candidates who have good programming skills. Strong on data structures, algorithms, understand time space complexity, able to come up with multiple solutions and then arrive at most optimized one keeping in mind customer requirements. Should also be well aware of OO concepts. If he / she has a strong background on these areas ( in any programming language),
2. Next the candidate should have worked on JS  with good hands on experience in a few projects mainly in backend development like making api calls, handling exception, models, data transformations, controllers etc. 
3. The last would be having some experience in any one of react.js/ node.js or even angular.js since some of these are being used in the current project. 
4. Prefer candidates with Angular (ver 8+), react.js (ver 16+), Node (Ver 14+) and extremely good in JavaScript, HTML & CSS
5. Experience : 3-6 years relevant

• Building Progressive Web App components and features for the company's advanced health-tech platform using React Js, Node Js
• Communicating effectively in a cross-functional product development team and presenting ideas and solutions effectively.

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.