React.js Developer

Job Title : React.js + Web3 Developer

Experience : 2+ Years

Location : Gurgaon, Sector 48 (Work From Office)

Working Days : 6 Days

Employment Type : Full-Time, Permanent

Job Summary :

We are seeking a talented React.js + Web3 Developer to join our fast-growing engineering team.

The ideal candidate should have strong front-end development skills along with hands-on experience in blockchain/Web3 integrations.

Mandatory Skills : React.js, JavaScript/TypeScript, Web3.js/Ethers.js, Wallet Integrations, State Management (Redux/Zustand), REST APIs, Git.

Key Responsibilities :

• Develop responsive, scalable front-end applications using React.js & TypeScript.
• Integrate Web3.js / Ethers.js to connect UI with blockchain networks.
• Work with REST & GraphQL APIs for backend communication.
• Implement wallet integrations (MetaMask, WalletConnect, Coinbase Wallet, etc.).
• Collaborate with blockchain engineers for smart contract interactions.
• Optimize UI performance, handle state management, and write clean, maintainable code.
• Troubleshoot and enhance Web3 features within the application.

Mandatory Skills :

• Strong hands-on experience in React.js, JavaScript/TypeScript.
• Experience with Web3.js/Ethers.js, blockchain interactions.
• Understanding of wallet integrations, dApps, and blockchain basics.
• Knowledge of state management (Redux/Zustand/Context API).
• Strong debugging, problem-solving, and Git experience.

Nice to Have :

• Familiarity with Solidity, Smart Contracts, and Ethereum ecosystem.
• Experience with Node.js or backend systems.
• Understanding of IPFS, Layer 2 solutions, and NFT standards.

Job Overview:

We are looking for a skilled and experienced React developer to join our web development

team. You will play a key role in designing and developing modern, scalable single-page

applications using React and related technologies. You will collaborate with cross-functional

teams, contribute to architectural decisions, and guide junior developers while remaining

hands-on with code.

Key Responsibilities:

● Design, develop, and maintain enterprise-grade React applications.

● Collaborate with UI/UX designers, product owners, and backend developers to deliver

efficient solutions.

● Contribute to and maintain scalable architecture and reusable component libraries.

● Ensure performance, accessibility, and responsiveness of applications.

● Review code and mentor junior developers, promoting best practices and clean code.

● Participate in sprint planning, technical discussions, and continuous improvement

initiatives.

● Research and propose modern frontend technologies and tools for future adoption.

● Create and maintain technical documentation.

Required Skills and Qualifications:

● 7+ years of experience in front-end development, with strong expertise in React and

Redux.

● Hands-on experience building Single Page Applications (SPA).

● Proficiency in JavaScript (ES6+) and TypeScript.

● Familiarity with frontend tooling: Webpack, Babel, ESLint, NPM/Yarn.

● Solid understanding of RESTful APIs, browser internals, and HTTP.

● Exposure to RxJS or similar reactive programming libraries is a plus.

● Should have experience in Hooks concepts.

● Familiarity with REDUX Middlewares like Saga or Redux Thunk.

● Knowledge of testing frameworks like Jest, React Testing Library, Cypress, etc.

● Experience working in Agile/Scrum teams.

● Strong communication and teamwork skills.

● Bachelor’s degree in Computer Science or a related field.

● Experience leading small teams or mentoring junior developers.

● Familiarity with CI/CD pipelines and code quality tools.

● Knowledge of accessibility (WCAG), internationalization (i18n), and performance tuning.

● Contributions to architectural decisions or project planning.

About the firm:

Sustainability lies at the core of Stantech AI, our vision is to empower organizations to derive actionable insights: effecting a smarter way of working. We operate on the premise that each firm is unique and as such requires its own idiosyncratic solutions. Putting this principle into practice, we deliver tailor made solutions to digitalize, optimize, and strategize fundamental processes underpinning organizations. For more information, please refer to our website:

www.stantech.ai.

Position Overview

We are seeking a Senior Frontend Engineer with extensive experience in React.js and Redux. The ideal candidate is well-versed in modern frontend best practices, has a deep understanding of state management, and is passionate about delivering high-quality, scalable software. In this role, you will collaborate with cross-functional teams to design, develop, and maintain user-facing features that enhance our platform and deliver an exceptional user experience.

Key Responsibilities

• Architect & Develop: Lead the design and implementation of complex React.js applications with a strong emphasis on Redux for state management.
• Code Quality & Reviews: Write clean, maintainable, and testable code. Conduct peer code reviews and enforce best practices across the frontend team.
• Performance Optimization: Identify and troubleshoot performance bottlenecks; implement optimizations to ensure fast, responsive user experiences.
• Collaboration: Work closely with product managers, designers, and backend engineers to define technical solutions, estimate project timelines, and deliver high-quality features.
• Technical Leadership: Provide guidance and mentorship to junior engineers, helping them grow their skills in React, Redux, and modern frontend technologies.
• Process Improvement: Contribute to continuous improvements in our frontend development process, coding standards, testing practices, and deployment pipelines.

Qualifications

• React.js Expertise: 3+ years of professional experience in building complex, high-scale React.js applications.
• Redux Mastery: Proven track record of architecting and maintaining global state management solutions using Redux.
• JavaScript & ES6+: Strong command of modern JavaScript (ES6+), along with a solid understanding of HTML and CSS.
• Frontend Best Practices: In-depth knowledge of performance optimization, cross-browser compatibility, and responsive design.
• Testing & Tooling: Hands-on experience with Jest, React Testing Library, or similar frameworks. Familiarity with build tools like Webpack, Babel, and NPM/Yarn.
• Version Control: Proficient with Git and branching strategies in collaborative environments.

Financial Package

• Rs. 10–20 Lakhs per annum, contingent on work experience

If you are a passionate Senior Frontend Engineer with expertise in React JS and are looking to join a forward-thinking technology firm, we would love to hear from you.

• Relevant experience in React JS  5+ Year

• Experience in Hooks, Typescript

• Experience in GraphQL (Query & Mutations)
• Strong experience in Jest for Unit Testing
• Knowledge on docker, K8 and Kafka

We are looking for highly skilled candidates with experience in frontend programming and are comfortable in dealing with backend tools.

• 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 ReactJS 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.

An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.

• 6 to 9 years of strong design and development experience in building massively large-scale distributed internet systems and products.
• Previous experience working as a React.js Developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Strong experience using a client side MVC framework such as NodeJS, ReactJS, or Redux.
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Experience in responsive design, cross browser compatibility, and website performance.
• Knowledge of frontend CSS frameworks like Bootstrap, Material UI, and preprocessors like SASS and LESS.
• Experience with handling Services, RESTful, APIs (NodeJS preferably).

You will be working with top-quality engineers who have built one of the best employee engagement SaaS platforms. You will be reporting to the Engineering Head and working closely with the Architect and other leads.

A wholesome opportunity in a fast-paced environment that will enable you to juggle between concepts, yet maintain the quality of content, interact and share your ideas and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the comprehensive benefits that Xoxoday offers.

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls and Compass. Works with over 1000 global clients. We help our clients in engaging and motivating their employees, sales teams, channel partners, and consumers for better business results.

What you'll need...

• Highly experienced using AngularJS , NodeJS
• Good understanding of web markup, including HTML5, CSS3, Javascript
• Strong understanding of CSS pre-processing platforms, such as LESS and SASS.
• A solid understanding of cross-browser/platform issues and code solutions
• Proficient understanding of code versioning tools, such as GIT
• An excellent ability to convert PSD/Sketch mockups into interactive digital experiences

Bonus points for...

• eCommerce development experience Magento,
• Understanding of conversion rate optimization or data-driven product development (analytics, a/b testing, etc.)
• Experience developing with prototype frameworks (Bootstrap, Foundation, etc.)
• Experience integrating dynamic content solutions with AJAX or API Services

Experience in Cloud and Serverless

• Knowledge of version control systems (GitHub etc.)

• Substantial experience in building large complex and performant web applications using HTML5, CSS3, Typescript and Javascript across multiple browsers (Especially IE11).
• Experience in frameworks such as React (Redux, Redux Thunk or Saga, React Router, React Hooks) , Node JS and good understanding of the basics of these frameworks and their life cycles.(MUST HAVE)
• Experience in frameworks like Bootstrap and CSS pre-processors like SASS and LESS is desirable.
• Deeper understanding of network layer, HTTP, HTTPS, cookies, local storage.
• Knowledge to handle real-time async data would be a plus.
• Good knowledge on build tools like Webpack and Gulp
• Good knowledge on testing tools like Jest, Cypress, Jasmine, Karma, etc
• Experience in Git source control 
• Deeper understanding of Chrome Dev Tools.
• Deeper knowledge of UI optimizations and performance.
• Excellent communication skills, good visual design sense, in-depth experience in developing web-based applications.
• Experience leading multi engineer projects and mentoring junior engineers.
• Command an impressive portfolio of the latest UI technologies is a plus