ReactJS Developer

Location: Mumbai

Experience Required: 2+ Years

Job Type: Full-Time

Notice Period: Immediate Joiners

About the Role

We are seeking a skilled and experienced Front-End Developer to join our product engineering team. The ideal candidate must have experience working in a product-based software development company and should have hands-on involvement in e-commerce platform projects.

Mandatory Criteria

• Candidate must be currently working or have prior experience in a product-based software development company
• Candidate must have worked on at least one e-commerce platform project (end-to-end involvement)

Key Responsibilities

• Develop and maintain responsive, high-performance web interfaces using React.js
• Translate UI/UX designs into pixel-perfect, reusable front-end components
• Optimize components for maximum performance and cross-browser compatibility
• Integrate front-end components with backend RESTful APIs
• Collaborate with design, backend, and QA teams to deliver seamless user experiences
• Participate in code reviews, testing, and agile development ceremonies

Required Skills

• Strong proficiency in JavaScript (ES6+), React.js, HTML5, and CSS3
• Experience with state management libraries such as Redux or Zustand
• Solid understanding of responsive design and cross-browser compatibility
• Familiarity with RESTful APIs and API integration
• Knowledge of version control systems like Git
• Understanding of performance optimization, debugging, and front-end testing practices

Ideal Candidate

8+ years of experience in front-end development, with at least 3–5 years in technical/architectural leadership roles across web and mobile platforms.

Expert in React.js and React Native, with hands-on experience designing and building scalable, modular applications using modern front-end frameworks and reusable component libraries.

Strong geospatial capabilities—proven experience integrating and optimizing mapping solutions (e.g., Google Maps, HERE Maps) with features like routing, clustering, and overlays.

Mobile-first mindset, with deep knowledge of responsive UI design, performance optimization for low-bandwidth environments, and cross-platform compatibility.

Architectural expertise in modular design, micro-frontends, SSR/SSG, PWAs, and cross-platform solutions—ideally with experience in monorepo environments and BFF patterns.

Technical leadership skills, including mentoring developers, enforcing best practices, driving autonomous development, and aligning technical solutions with business needs.

CI/CD & DevOps familiarity—strong understanding of build tools (Webpack, Vite, Metro), containerization (Docker), and deployment automation using Jenkins, GitLab CI, etc.

Security, accessibility, and testing focus—capable of implementing WCAG-compliant UIs, secure data handling, and robust test strategies using tools like Jest, Cypress, Detox, and Appium

·  4 – 5 years of experience in Front end development

·  2 years of experience using React and Redux

·  3 years of experience in using HTML, CSS

·  1 year of experience in any of the Headless CMS such as Ghost or Strapi or Cockpit.

·  2+ years using JavaScript consuming, displaying and updating data using Web APIs (JSON).

·  2+ years of experience using Material UI and JSS.

• Drive UI/UX & design aspects of the platform Innovate on UX to provide the best possible experience to the customer
• Convert UI design wireframes to functional UI (HTML/CSS/JS)
• Build high performant UI features
• Optimise existing features for better performance
• Build reusable code and libraries for future use
• Complete the assigned features with validations
• Should take end-to-end ownership and pride in building assigned features
• Collaborate across the teams to define, design, and ship new features
• Budget work and stick to the deadlines
• Requirements
  
  • 3+ years of experience as a front-end developer
  • At least one product built and published
  • Proven experience in building/or been a lead contributor in a tech set-up
  • Strong analytical and structural thinking skills
  • Passion to build beautiful, responsive and performant user experiences
  • Strong understanding and fundamentals in Javascript & JQuery
  • Proficient in React.js, material design concepts, UI/UX best practices and design standards
  • Willing to work on pure Javascript based projects as well as React.js based projects
  • Proficient understanding of cross-browser compatibility issues and their solutions.
  • Proficient in HTML5 CSS3
  • Proficient with CSS preprocessors LESS and SASS

We are looking for a Senior Front End Engineer.

• Hands-on with contemporary javascript frameworks (React js Angular js)
• Hands-on with UI layouts, SASS, LESS, Bootstrap
• Developed reusable components and libraries for frontend
• Frontend optimization techniques to reduce latencies
• Frontend optimization for SEO
• Excellent written and verbal communication skills, design thinking
• Practical experience with engineering best practices and Technology

Key Responsibilities:

• Build desktop and mobile web applications using contemporary javascript frameworks

•Actively participate in design and code reviews to build robust
applications and prototypes

•Explore and design simple and intuitive consumer experiences

•Work closely with Product managers, UX designers and back end
engineers to implement frontend solutions

•Build reusable code and libraries for future use, focus on long-term code
maintainability

•Work in a fast-paced and agile development environment

Key Responsibilities:

• Participate in full project life cycle (including requirement analysis, system design, development, and support if required).
• Partner with Project Managers, Business Analysts, and other developers to plan project work by providing estimates, risk analysis, technical options.
• Support and work collaboratively with teams across areas of design, development, quality assurance, and operations.
• Help define the vision for a product, identify dead ends and routes with untapped potential.
• Attend meetings to discuss and demonstrate solutions at both a technical and business level.

Required Skills

• 5+ years of web application development experience using at least one of the following: Javascript, Web Components, Angular, Polymer, ReactJS, Redux, LitElement, Svelte, VueJS, or knockout.js. Web Components is used and preferred.
• Experience with SPA (Single Page Application) design and implementation
• Experience with HTML5/CSS3/JavaScript/ and AJAX
• Experience working with a variety of APIs and RESTful interfaces
• Experience with performance optimization
• Experience integrating security best practices into the SDLC
• Experience with Git
• 1+ years of Agile development experience
• Experience manipulating and working with data in a variety of forms: csv, xml, json, structured and unstructured
• Intellectual curiosity and drive; self-starters will thrive in this position
• Passion for Technology: excitement for new technology, bleeding edge applications, and a positive attitude towards solving real world challenges

Desirable Skills

• SQL experience. PostGreSQL a plus.
• Knowledge of AWS or other cloud environments is a plus.
• Knowledge JIRA, Bamboo, Confluence, or BitBucket a plus.
• Experience with CI/CD is a plus.
• Experience working with databases and web applications in analytics, reporting or Business Intelligence is a plus.

TECHNICAL SKILLSET

• You have strong experience with semantic HTML5, CSS3, and a CSS preprocessor of your choice SASS or LESS, understanding of writing modular CSS (Must)
• You have strong knowledge of Object Oriented JavaScript (Must)
• You have strong experience with Angular or any other frameworks like Ember, Backbone or React (Must)
• You have working experience with large scale front-end architectures
• You have good knowledge in using restful web services
• You have a strong focus on performance
• You have knowledge of CSS animations
• You have experience with automation tools like Web-pack, Grunt or Gulp
• You have knowledge of unit testing tools like Jasmine, Karma etc.

Job Role

• As a Frontend Developer you will be responsible for extending and optimizing product user interfaces. You will work in a team of developers and designers to build cutting edge, graphical appealing user interfaces that provide a great user experience
• Develop web applications using various JavaScript frameworks 
• Have attention to detail and identify potential performance weak spots
• Find and share frontend best-practices with team members and other developers
• You will be actively involved during the entire technology development lifecycle.
• Responsibilities will include all aspects from design, coding, testing, customer feedback cycle changes and support.
• Work with a team of amazing developers and designers involved in the design and development of global platforms, participate in Agile sprints
• Invent and prototype new features, build, test and ship them to customers as SaaS, cloud based or hosted product platforms
• You will be working on one of the fastest growing e-Commerce platforms in exciting application areas like core commerce, supply chain, logistics and fulfilment, merchant and offline to Online, mobile commerce, analytics, automation, DevOps and a lot more for the global markets positioned for Asia.
• Participate in a fun, open learning environment with great benefits and smart talented folks that represent among the best globally.

Qualification

• A Bachelor’s degree in Computer Science or equivalent.

Quinbay is an upstart digital platforms and products company with a core focus on disrupting traditional markets and business models with the strength of our innovation driven digital value. We harness the power of our open innovation culture, our unique talent selection approach, the skills and expertise of our people across various industries, domains and technologies and a unique blend of analytics driven strategies for creating future digital platforms.

OPPORTUNITIES : Pursue opportunities in and learning/growth interests in Mobile, product development, product management, Analytics, Machine learning, UI/UX design, DevOps, Automation, Drones, bots and Java / open source development frameworks and methodologies – on a variety of domains like eCommerce, Logistics and fulfilment, Mcommerce and a whole lot others.

Opportunities to be part of fastest growing eCommerce platforms in exciting application areas like core commerce, supply chain, logistics and fulfilment, merchant, mobile commerce, analytics, automation and a lot more for the global markets positioned for Asia.