


• Strong command of ReactJS
• Strong command of modern JavaScript (examples: arrow functions, async/await,
destructuring, rest & spread, etc.)
• Strong command of modern CSS and HTML (examples: flexbox, grid, media queries, etc.)
• Strong command of modern JavaScript tooling (examples: webpack, babel, ESLint, etc.)
• Hands-on experience with TypeScript on ReactJS projects is a bonus, but not required
• A good grip on Git

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- Communicating with external web services
- Deep knowledge of React practices and commonly used modules based on extensive work experience
- Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system
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We are looking for a Frontend developer who is proficient with React.js with Html and CSS. The primary focus will be on developing user interface components and implementing them, following well-known React.js workflows such as Redux. The developer would ensure that these components and the overall application are robust and easy to maintain.
Job Description
● Independently think of solutions to complex requirements; possess exceptional logical skills.
● Work on products that are used across platforms (e.g. Android and iOS Mobile Devices,
Tablets, Desktop/Mac)
● Analyse current products in development, including performance, scalability, diagnosis and troubleshooting
● Work with the existing framework and evolve it by building reusable code & libraries
● Search and introduce new software related technologies, processes and tools.
● Collaborate with other team members
● Working on the robustness of the application
Key Skills Required:
● Strong hands-on experience in JavaScript, HTML5, CSS3, CSS3 Animations.
● Good understanding of advanced JS libraries and frameworks such as React.js and Angular.
● Understanding of client-side unidirectional data flow principles and Redux knowledge.
● A good understanding of - React Native - is a big plus.
● UI Performance: should have hands-on experience of optimizing page load, rendering,caching.
● NodeJS, Webpack knowledge is a plus.
● Proficient understanding of cross browser compatibility issues and ways to work around such issues.
● Fluent in responsive design and mobile / tablet UI / UX.
● Web mobile (touch devices: mobiles and tablets) experience is expected.
● Familiarity with JavaScript standards(ES5,ES6) and OOPS concepts.


Role: UI Developer (ReactJs Developer)
Experience: 1.5 - 2.5 Years
Qualification: BE (IT/ Computer), B.Tech., M.Tech., MCA.
Primary Skills (Must Have):
· 1.5 - 2.5 years of experience in web UI development
· Hands-on experience in developing responsive design using ReactJs,HTML 5 + CSS3, jQuery
· Bootstrap 3 and other JavaScript Frameworks
· Worked on SCSS and LESS
· Worked on UI integration, collaborate with the design team to define the UI architecture, using Web design best practices
· Knowledge of Material design framework Good communication and interpersonal skills
Additional skills/good to have:
· Hands-on experience in developing a web-based solution using the latest technologies covering React.Js Angular, Angularjs, jQuery, JavaScript, HTML5 technology (CSS3, Compass, etc.), object-oriented javascript and MVC js frameworks like Extjs/angular/backbone
· Bootstrap 4 WCAG standards (AAA) W3C validator BEM standards Table structure (Mailer)
· Ability to work independently, good communication skills have experience in working on complex and medium to large projects.
· Good understanding of SDLC and flair to follow the processes.
· An understanding of the fundamentals in object-oriented development, UML and Design Patterns
· Experience building complex web apps that have been successfully delivered to customers
· Exceptional analytical abilities, creativity, and attention to detail
· Good team player who is a self-starter and well organized
· Good expertise, good in technical analysis/debugging problems/issues,
· Experience in designing and architecting medium to complex systems, well versed with design standards & framework
· Experience in working on multiple technologies and complex projects
· Knowledge in Design Patterns.
· Mobile development experience would be an added advantage.
· Functional and Technical Specs documentation
· Experience in Agile development is preferable.

Work Responsibilities
- What You’ll Do:
- Engineers will develop and improve features for products such as WebView pages called from within Mercari’s web version and native app, along with tools used by the Customer Support Team for answering user inquiries and providing transaction support.
- Senior engineers in the Frontend Team are expected to use their technical skills to lead the team and product development, train members through design and code reviews, and make contributions and improvements to the hiring process, including technical tests.
- Development Environment:
- Languages: HTML, CSS, JavaScript, TypeScript, React, Gatsby, Next.js, GraphQL, Apollo Client, Redux, Cypress, Rendertron, Lit, Playwright
- Infrastructures: Google Cloud Platform (Compute Engine, Kubernetes Engine, App Engine)
- Configuration management tool: Terraform
- Other: Circle CI, GitHub, Slack, JIRA, Crowi, Spinnaker, Datadog
Minimum Requirements
- Shared understanding and belief in Mercari Group's mission and values
- At least 3 years of experience in development related to frontend fields such as web browsers, JavaScript, TypeScript, React.js, Next.js, or Redux
- Experience with developing and operating large-scale products
- Ability to design and develop with performance and scalability in mind
- Ability to use HTML and CSS to implement solid user interfaces
- Knowledge of JavaScript and experience developing with UI libraries or frameworks such as React, Vue.js, and Angular
- Able to understand and explain web operation principles and browsers
- Understanding of version management and ability to participate in development via Git
- Effective communication skills, needed for product development with team members and with other teams
Preferred Requirements
- Extensive knowledge of standard web technologies and specialized knowledge in some areas, like TypeScript, React.js, Next.js, Redux
- Understanding of the characteristics of different libraries/frameworks and the ability to introduce them to projects where necessary
- Ability to design architecture based on the characteristics of the app
- Ability to consistently take initiative in implementing improvements to the app
- Project management and/or team leadership
- Cloud development experience (preferably GCP or AWS)
- Experience contributing to an open-source project
- Familiarity with CI systems and the release process
Working Conditions
Employment Status
Full-time
Office
Bangalore
- Hybrid Workstyle

Your key responsibilities will be converting PSD/Figma into HTML/CSS. You will also be responsible for writing clean, semantic front end code - HTML5, CSS3, JQuery, Java Script.
Selection Criteria
If your profile has selected then you have to attend a 3 hours assignment to move your candidature to the final round of interview.
Responsibilities for UI Developer
- Seek to enhance the user experience by creating seamless navigation through various digital programs and interfaces within the company
- Use coding to develop the aesthetics implemented within a website or product, from the layout menus and drop-down options to colors and fonts
- Combine interface design concepts with digital design and establish milestones to encourage cooperation and teamwork
- Develop overall concepts for improving the user experience within a business webpage or product, ensuring all interactions are intuitive and convenient for customers
- Collaborate with back-end web developers and programmers to improve usability
Qualifications for UI Developer
- 2-4 years of demonstrated experience in creating and implementing UI development
- Detailed experience with coding and the ability to troubleshoot and analyze websites using HTML, CSS and comparable languages
- Continued education and research into UI development trends and current design strategy and technology
- Professional written and interpersonal skills
- Ability to prioritize and manage multiple milestones and projects efficiently
- Advanced problem-solving skills and the ability to optimize code for the best possible outcome
- Ability to work effectively in a collaborative environment to create top-performing interfaces
- Proficient with visual design programs such as Adobe Photoshop


passion for all things JavaScript, having built complex single-page applications on React/Redux for at least 2 years.
Profound understanding of HTML, CSS, and browser capabilities to build beautiful, fast and snappy applications.
Comfortable with jest for writing unit and integration tests/puppeteer for e2e tests.
Curiosity to remain updated with the newest technologies and frameworks. Intuition for usability and UI design, with an ability to balance polish with the constraints of timing and scope.
Comfort with any of WebRTC/Backend Stack/React Native is a strong plus.
Most importantly, love coding and debugging gnarly problems!

Responsibilities
- Convert wireframes into rich interactive prototypes.
- Work with backend development team to integrate front end code.
- Understand business requirements and convert into functional specifications.
- Participate in architecture and technical level discussions and takes initiative.
- Passion for web design and eager to learn and implement the latest trends.
- A focus on delivering high-quality code through strong testing practices
- Working on Information architecture and Designing wireframes and prototypes.
Skills Required:
- 4+ years of commercial-grade web/front-end development experience.
- Strong experience in JavaScript, ideally ES6 or ES7, Node.js, building Single Page Web Applications with modern frameworks (Angular or AngularJS, React, Vue).
- 2+ years hands on experience with frameworks like react/relay/Redux/node.
- 2+ years with JS build tools like grunt,webpack,gulp etc.
- Knowledge in ES6, Webpack is a plus.
- Experience in creating web applications with delightful user experience.
- Experience working with REST APIs.
- Experience in TDD, Writing Clean & Readable code.
- Experience in Version control - Git.
- Awareness of cross-browser compatibility issues and client-side performance considerations
- Experience in creating responsive pages and cross-browser support.
- Ability to clearly communicate thoughts and ideas by rapid prototyping.
- Debugging skills, familiar with debugging tools of all major browsers.
Nice to Have:
- Prior experience in Fintech Startups
- Knowledge of Node.js, Express js, AWS (EC2, S3, Elasticsearch)
- Knowledge and working experience with MongoDB, NOSQL

What You Will Be Doing:
- Create highly responsive B2C web-app using a wide range of open source frontend and backend technology.
- Create single page applications using wide range of javascript & cutting edge libraries/frameworks.
- Responsible for the full lifecycle of a project, including development, unit testing, system testing and change management.
- Research technical issues and provides recommendations to enhance JavaScript products.
- Working with multiple projects.
What we are looking for:
- Bachelor’s degree in Computer Science or equivalent preferably from IIT,NIT & other premier institutes.
- Rockstar JavaScript developer, who appreciates the intricacies of JS as well as passionate to follow new trends in JS.
- Experience with product companies.
- 4-9 yrs of software development on advanced JavaScript stack (Native JavaScript, Asynchronous Request Handling, AJAX, HTML5, CSS3, etc).
- In-depth knowledge in ReactJS & NodeJS
- Proficiency in any other modern web frameworks will be a plus.
- A solid knowledge of advanced data structures & algorithms.
- Proficient in Computer Science fundamentals & object-oriented design.
- Solid understanding of cross-browser compatibility issues and ways to tackle those.
- Must possess a track record of building Single Page responsive UI.
- Experience with Databases such as NoSQL and any RDBMS will be a plus.
- Experience with transport protocols such as TCP, HTTP & WebSocket.
- Expressing and appreciating design patterns is a real addition.
- Critical of coding practices and development methodologies



