Senior UI-UX Developer

Job Title: MERN STACK Developer

Location: Hybrid weekly ⅔ days WFO (Bengaluru- India)

About the Role:

We're looking for a passionate and skilled Frontend Engineer with 1–3 years of experience to join our growing development team. This role is front-end-heavy, focused on building clean, scalable, and high-performance user interfaces using the latest technologies in the MERN stack—particularly Next.js, React, TypeScript, and Material UI (MUI).

You’ll work alongside a collaborative and talented team to design and build seamless web experiences that delight users. If you're excited about modern frontend architecture and want to grow in a fast-moving, remote-first environment, we'd love to hear from you.

Key Responsibilities:

• Develop responsive, high-performance web applications using Next.js, React, and TypeScript.
• Translate UI/UX designs into functional frontend components using MUI.
• Collaborate with backend developers, designers, and product managers to deliver new features and improvements.
• Ensure code quality through best practices, code reviews, and testing.
• Optimize applications for maximum speed and scalability.

Must-Have Skills:

• 1–3 years of professional experience in frontend development.
• Strong proficiency in React, Next.js, and TypeScript.
• Experience with Material UI (MUI) or similar component libraries.
• Understanding of responsive design, modern frontend tooling, and web performance best practices.
• Familiarity with Git and collaborative workflows.

Nice-to-Have (Bonus) Skills:

• Familiarity with testing libraries (Jest, React Testing Library, Cypress).
• Experience working with design tools like Figma or Adobe XD.
• Basic knowledge of accessibility (a11y) standards and performance optimization.
• Basic experience with Node.js, MongoDB, or working in a MERN stack environment.
• Familiarity with AWS services or cloud deployment practices.
• Experience with RESTful APIs or integrating with backend services.

Type, Location

Mumbai, Maharashtra, India

Desired Experience

4+ years

Roles and Responsibilities :

Skills required :

• Strong knowledge of javascript programming, ReactJS, HTML5, CSS3, SASS, ES6 Strong knowledge of modern responsive design techniques
• Strong knowledge of stateless microservices (node/java/etc..), HTTPS/REST, JSON, Webpack/Grunt/Gulp
• Very good understanding and implementation experience of web application UI using OpenID Connect login/authentication
• Version Control – Git, CI/CD of UI projects(e.g. CircleCI, Travis CI, Jenkins), configuration and deployment of static UI assets

Must have skills :

• Must have at least 4 years of industry experience in white labeled Front End web application design & development
• Experience in Test Driven Development, Front End testing and performance optimization (e.g. Jest, unit testing, end-to-end testing)

• Strong experience of Angular 2+ and above along with other technologies like HTML5, CSS, jQuery, AJAX with good knowledge of ECMA Scripts.
• Strong knowledge of JS Fundamentals.
• Design & development of Angular applications as per desired specifications, along with experience in frameworks/libraries like jQuery, Bootstrap, Typescript etc.
• Architecture design, development, testing and maintenance of Web Apps, Implementation based on Angular Application MVC Patterns.
• Own end to end product modules/features (from the requirement to going live)- Design & code review, troubleshoot & help team members on issues.
• Gather requirements by interacting directly with the end-users.
• Research on open source framework/technology required for developing the feature/application.

Responsibilities:

• Participating in design and development activities as required for specific projects allocated
• Understand the project requirement and able to implement and complete the allocated modules independently.
• Follows established development and testing procedures to ensure quality software development which meets the requirements
• Creates and maintains documentation regarding systems being developed in order to ensure long-term maintainability

Requirements:

• BTech or equivalent degree from a reputed institute
• Proven hands-on Software Development experience
• Design & Develop HTML5 games with the help of HTML5, CSS3, JavaScript, AJAX, SVG, Pixijs library across multiple platforms(Web/ MobileTablet/ TV)
• Building reliable and efficient code for game projects
• Should understand build milestone process and meet project timeline.
• Helps drive the delivery of successful, cutting edge products by working on a team with other Developers, and Designers
• Work towards optimization and best practices, increase performance of our application
• 1 to 3+ years of development experience. (Preferably Gaming)
• Good knowledge of HTML5, CSS3, JavaScript, AJAX, SVG, JSON
• Strong understanding of Object-Oriented Programming, and Design Patterns for Games and Web Applications
• Familiarity with any of the current generation JavaScript frameworks like PixieJS, CreateJs, Starling etc
• Strong attention to detail and knowledge of robust quality assurance practices
• Strong testing, debugging, and analytical skills

• Build responsive web-pages
• Experience in Javascript, jQuery, CSS, HTML5
• Expert in JavaScript who can build up a JavaScript framework from scratch.
• Possess good knowledge in front-end performance tuning.
• Understands how to use the page speed tool and tackle on issue based on its suggestions.
• Consume REST API's provided by the backend team
• Experience in some modern JavaScript framework like easyUI or reactJS would be a plus

About Spinny

Founded in 2015

O2O Model focusing on selling high quality certified refurbished cars

Offering 5 Days no question money back + 1 year warranty

Over 10 outlets in 5 Cities: Delhi NCR, Bangalore, Mumbai, Pune & Hyderabad. (Launching in 3 more cities soon)

Over 10000+ supremely happy customers

Business Model

Working on a transactional and fulfilment model, Spinny is the go-to platform for buying and selling used cars.

Offering convenient transactions to the customers

One of the key differentiating factors is that its price engine, which works

on a proprietary neural network-based algorithm, determines the correct price of the car.

Spinny also takes care of all the paperwork, from registration to title transfers as well as assisting buyers in financing their purchase.

Frontend Developerswho possess passion for pushing web technologies to the limits and will work with our team of talented engineers to design and build the next generation of the Spinny web application.

Software Development Engineer: Frontend

Our Culture

Over 750 Spinners in the ecosystem Fast track growth environment Fostering strength driven culture Culture philosophy of social, agile and sustainable Top 50 global technology 

Crunchbase

Series A & Series B funding by SAIF & ACCEL & ALTERIAFrontend Developers who possess passion for pushing web technologies to the limits and will work with our team of talented engineers to design and build the next generation of the Spinny web application.

What you'll do

You are a perfect match with us, if you have:

Experience in javascript frameworks such as React,, etc and a good understanding of the basics of these frameworks and their life cycles.

Experience with popular React.js workflows (such as Flux or Redux).

Familiarity with newer specifications of ECMAScript (ES6 ES7).

Bachelors/ Masters degree in Computer Science, Engineering, preferably from IITs/Top RECs.

1-5 years of experience at cutting edge organizations or startups

• Develop and manage apps on React Native platform
• Analyse, code, debug, test, document & deploy applications
• Provide technical leadership and upgrade architecture design and solution to accommodate future expansion
• Ensure quality control processes are successfully employed.
• Experience in React-Native based app development is a must
• Experience in Mobile app development (Cross platform apps)
• Must have published at least 1 major React-Native app
• Knowledge of service workers implementation for Progressive Web Application (PWA)
• Demonstrated ability with HTML5, CSS3, Bootstrap, jQuery, and other JS frameworks React JS
• Development experience of UI (layouts, animations, etc.)
• Good understanding of Design and Architecture Patterns
• Understanding of iOS and Android Code signing process and deployment model
• Understanding of Unit Testing, Debugging Methodology used in React Native Apps
• Understanding on integration of native modules with React Native code
• Experience with caching and scaling techniques