
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

About Sunday Labs
About
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We are seeking an experienced, hands-on SDE 3 - FE to build and optimize scalable, user-friendly applications with a focus on micro frontend architectures. The ideal candidate will blend strong UI engineering skills with modern frontend practices, ensuring responsive, secure, and high-quality experiences aligned with business needs.
Responsibilities
● Design & Build: Develop scalable, performant front-end applications using React, TypeScript, and Micro Frontend architecture.
● Code Quality: Review PRs, enforce best practices, and introduce patterns to reduce technical debt.
● UI/UX Excellence: Deliver pixel-perfect, responsive, and accessible UIs across devices and browsers.
● Performance: Optimise rendering, bundling, caching, and load times for smooth user experiences.
● Mentorship: Guide and mentor mid/junior engineers, run design/code walkthroughs, and foster a culture of technical excellence.
● AI-driven Development: Leverage AI tools to accelerate coding, debugging, testing, and documentation in day-to-day workflows.
Criteria:
Experience: ~5–7+ years in software development, with proven expertise in React, modern frontend architectures, and building scalable user interfaces.
Technical Skills
● Strong proficiency in React.js (v17+), TypeScript, and modern frontend workflows.
● Experience with Micro Frontend architectures (e.g., Module Federation, Webpack, or similar approaches).
● Solid expertise in HTML5, CSS3, and mandatory proficiency with Bootstrap for responsive design.
● Knowledge of Blade templates for frontend-backend integration.
● Good-to-have: Tailwind CSS and Material UI for component-based design systems.
● Deep understanding of state management (Redux, Recoil, or equivalent).
● Experience with frontend performance optimisation and browser dev tools.
● Familiar with testing frameworks (Jest, React Testing Library, Cypress).
● Proficiency with Docker and containerised environments.
● Experience with CI/CD pipelines for frontend deployments.
● Ability to effectively use AI-powered tools for code generation, refactoring, documentation, and productivity improvements.
Soft Skills
● Clear and effective communication.
● Strong sense of ownership and accountability.
● Ability to break down complex problems and provide accurate estimates.
● Openness to adopt new tools/technologies to improve team efficiency.
What we offer:
● An exceptional team: Our hiring bar is high, and your colleagues are talented, motivated self-starters.
● A learning environment: We are a learning organisation, and as a team, we will help you grow and encourage you to learn and upgrade your skills.
● Outstanding compensation: top talent deserves top pay, and our salary, equity and benefits reflect this.
● Opportunities to grow: Encourages you to attend technical conferences and take company funded educational courses to advance your skills.
● An opportunity to be a key member of a well-capitalised, leading brand in an online real estate investing platform.
● Build UIs and APIs using modern tools such as ReactJS, TypeScript, CSS, CSS-in-JS, Redux.
● Deliver high-quality, well-tested code
● Experienced with modern JavaScript coding, testing, debugging and automation techniques
● Enjoy building user-friendly, data-rich JavaScript/HTML/CSS applications
● Excellent analytical, problem-solving, and troubleshooting skills
● Great communication skills
Role : React JS Developer
- 1-4 years of experience as a React JS developer.
- Must have Working Experience in a product based organization at least 18 months.
- Good Communication skills must.
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Thorough understanding of React.js and its core principles
- Experience with popular React.js workflows (such as Flux or Redux) ● Familiarity with newer specifications of ECMAScript
- Experience with HTML,CSS, Bootstrap and UI Design
- Knowledge of RESTful APIs
- Knowledge of modern authorization mechanisms, such as JSON Web Token ● Familiarity with modern front-end build pipelines and tools
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
- Ability to understand business requirements and translate them into technical requirements
- Familiarity with code versioning tools {such as Git}
•Able to work with creating complex logics for the manipulation of DOM as well for binding.
•Should know how to work with HTTP calls in Angular.
•Experience working with Micro frontend angular applications is added advantage
•Should be able to get a fast grip of the requirements and must be able to create the UI/UX accordingly.
•Collaborating techniques with back-end developers as well the client users is a must.
•Should be very familiar with versioning systems such as git or Azure DevOps
•Should be efficient in writing CSS styling.
•Good to have knowledge of CSS styling, agile methodology.
Your role and our tech stack
Reporting to the founder, you will be expected to develop, deploy and oversee the execution of the tech strategy, product road-map and operations to ensure alignment with our businesses goals as we grow and scale. You will play a key part in the organisation's success, taking the current MVP and developing it further to move the company through to early stage funding and into profit.
Quesst's is built using React.js [Frontend], Node.js [Backend], PostgreSQL [DB], Amazon EC2 [Application Hosting], Amazon S3 [Media Storage Service], and Amazon SES [Email Sending Service]. You will be responsible for implementing full-stack features and collaborate with other team members to plan each sprint. You’ll be working across the entire system architecture and be responsible for designing, implementing and maintaining restful APIs, micro-services and databases.
Responsibilities
- A complete ownership of the feature.
- Find innovative ways to increase efficiency/Application performance.
- Implement Visual Designs in standards compliant.
- Build efficient and reusable front-end systems and abstractions.
- Suggest and implement improvements to existing product interfaces.
- Ensure that all the assigned systems are performing to scale.
- Work closely with product management team to define and refine feature.
Requirements
- At least 2 years of product development experience with expertise in designing and implementing high-performance web applications.
- Strong hands-on experience in developing web applications using JavaScript.
- Strong experience and knowledge in single page frameworks using ReactJS and ability to design the architecture of single page applications.
Must have Skills
==============
Excellent understanding on fundamentals of Javascript, HTML5, CSS3
Proficient in Javascript/CSS frameworks like AngularJS (2+), jQuery, Bootstrap
Proficient understanding of code versioning tools, such as Git/SVN
Very good with data structures and algorithms
Excellent communication skills to interact with clients/stakeholders
Good to have Skills
=================
REST API development using NodeJS, MongoDB, Express
UX skills like prototyping or wireframing the UI requirements
Mobile App development using Phonegap or Ionic or React Native or Flutter
Responsibilities
==============
Communicating with the clients/stakeholders to understand the project requirements.
Delivering front-end solution, ensuring client satisfaction.
Leading the front-end team from a technical, architectural and quality perspective.
Collaborating with the backend developers to build REST APIs.
What you will get?
================
Flexible timings
Small team, hence quick growth
Training on latest technologies









