11+ JSL Jobs in Mumbai | JSL Job openings in Mumbai

Primary purpose of the role:

Front end development of websites and applications using CSS3, HTML5, jQuery and other skills to produce clean, functional and web compliant projects to be handed over to Back End Developers to be further worked on as well as CSS bug fixes post Back End development

Major responsibilities & deliverables:

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1. Great skills in HTML, CSS, JavaScript and cross browser implementations.
2. Strong analytical and problem-solving skills.
3. Experience and knowledge about the cool stuff in HTML5 and CSS3.
4. At Least knowledge of one JavaScript framework such as VueJs, ReactJs, AngularJs
5. Proficiency and familiarity with CSS/JavaScript frameworks and utilities such as HTML5 Boilerplate, jQuery, Modernizr, Firebug, JSLint, minification, and others. 
6. Taking PSD files from designers, slicing and/or recreating elements via CSS to match the design perfectly
7. Ability to make modifications to libraries in jQuery as per requirement of a project
8. Extensive knowledge of fonts, embedding from third parties like Google, Typekit & Font Deck etc.
9. Knowledge of optimizing CSS/JavaScript performance, by coding practices and tools.
10. Passion and follow through for their work. Excited and curious about learning new technology, as well as the sharing of ideas. Exceptional collaboration, listening, written, and verbal communication. Able to own individual projects as well as the ability to work within a team.
11. Awareness of current design trends in the visual arts, working knowledge of the latest computer packages and an understanding time limits which can impact on the design.
12. Knowledge of GIT or any other version control software.

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Frontend developer with knowledge and experience in ReactJS, Jquery, Html, CSS.

Good Analytical thinking

Understand client requirements 

Good Know ledge of testing APIs for integration.

Experience in Redux and React

We're looking for an experienced mid-level Front End Engineer who’s passionate about building mobile and web products. As a Front End Engineer, you will be trusted to architect efficient, scalable, beautiful design systems for our web applications

Company's Name:- WeAssemble

Website:- www.weassemble.team 

Location:- Prabhadevi, 2min walkable from Prabhadevi Railway Station 

Designation:- React.js Developer

Working Days - Monday - Friday 

All Sat & Sun Off 

Office timing - 9:00 - 6:00 

Responsibilities

• Build interactive UI components with ReactJs in various applications.
• Collaborating regularly with backend/API engineers in designing, specifying and implementing services to decouple functionality
• Find opportunities to improve current systems or patterns through auditing or benchmarking
• 'Own' and take lead in newly developed features for current or next generation platforms
• Maintain our front end test coverage by running your own tests and working with our QA team on automated testing
• Lend a hand to help other engineers through pair programming, mentoring, and supporting your teammates

Requirements

• Experience: 5 years
• Good knowledge of ReactJs
• In depth understanding of JavaScript
• Understanding of REST APIs
• Experience with Sass / Scss / Less / CSS
• Have in-depth knowledge of browsers, cross-browser compatibility issues, and how the DOM works
• Bring experience in the day-to-day practices of continuous delivery, automated testing, and agile development
• Comprehensively understand Web Application fundamentals and the libraries/tool chains used to deliver them such as Webpack, Babel, testing with Mocha/Chai or Jest, git and other CI tools

Tools

• Git
• Jira

Good to have

• Experience with Mocha, Chai or Jest
• Experience with Sprint
• Familiarity and experience with Container architecture - Docker/Jenkins and build scripts

Meghal Majithia

HR Recruiter - WeAssemble (Vimontera Consultancy LLP)

Job Title: React.js Developer

Location: Mumbai

Experience: 2–4 Years

Department: Technology

About InCred

InCred is a leading financial services group leveraging technology and data science to make lending quick, simple, and hassle-free. Our mission is to empower individuals and businesses by providing easy access to financial services while upholding integrity, innovation, and customer-centricity. We operate across personal loans, education loans, SME financing, and wealth management, driving financial inclusion and socio-economic progress. [incred.com], [canvasbusi...smodel.com]

Role Overview

As a React.js Developer, you will be responsible for building high-performance, scalable, and responsive web applications that deliver exceptional user experiences. You will collaborate with designers, backend engineers, and product teams to create intuitive interfaces for InCred’s digital platforms.

Key Responsibilities

• Front-End Development: Build and maintain web applications using React.js and modern JavaScript (ES6+).
• Component Design: Develop reusable components and libraries for future use.
• State Management: Implement efficient state management using Redux, Context API, or similar.
• API Integration: Integrate RESTful APIs and ensure smooth data flow between front-end and back-end.
• Performance Optimization: Optimize applications for speed, scalability, and cross-browser compatibility.
• UI/UX Collaboration: Work closely with designers to translate wireframes into responsive, pixel-perfect interfaces.
• Testing & Debugging: Write unit tests using Jest/React Testing Library and troubleshoot issues.
• Code Quality: Participate in code reviews and follow best practices for maintainable, clean code. [interviewguy.com], [linkedin.com]

Required Skills

• 2–4 years of experience in React.js development.
• Strong proficiency in JavaScript (ES6+), HTML5, CSS3.
• Hands-on experience with React Hooks, component lifecycle, and state management (Redux/Context API).
• Familiarity with RESTful APIs and JSON.
• Experience with version control systems (Git).
• Knowledge of front-end build tools (Webpack, Babel, NPM/Yarn).
• Understanding of responsive design principles and cross-browser compatibility.

Preferred Qualifications

• Experience with TypeScript, Next.js, or React Native.
• Familiarity with CSS frameworks (Bootstrap, Tailwind CSS, Material-UI).
• Exposure to CI/CD pipelines and Agile methodologies.
• Knowledge of performance optimization tools (Lighthouse, Chrome DevTools).
• BFSI or fintech domain experience is a plus. [jobpe.com]

Why Join InCred?

• Culture: High-performance, ownership-driven, and innovation-focused environment.
• Growth: Opportunities to work on cutting-edge tech and scale systems for millions of users.
• Rewards: Competitive compensation, ESOPs, and performance-based incentives.
• Impact: Be part of a mission-driven organization transforming India’s credit landscape.

About Deqode

At Deqode, we work on cutting-edge solutions that are redefining the digital frontier. Our team thrives on innovation, collaboration, and creating next-gen products that solve real-world problems. We are now looking for a skilled and passionate React.js Developer to join our growing frontend team.

Roles & Responsibilities

• Take complete ownership and delivery of front-end applications.
• Ensure optimized performance across mobile and desktop platforms.
• Write clean, tested, and well-documented code using JavaScript, HTML, and CSS.
• Collaborate with UI/UX designers, HTML coders, and backend developers to bring designs to life.
• Integrate RESTful APIs and work seamlessly with backend teams.
• Communicate and integrate with third-party web services.
• Build and manage infrastructure for serving frontend apps and assets.
• Maintain frontend application deployment and ensure build pipeline automation.
• Use JSDoc or similar tools for inline documentation of code.
• Write extensive unit tests following Test-Driven Development (TDD) best practices.
• Design and automate the frontend build process using tools like Webpack/Gulp/Grunt.

Required Skills & Qualifications

• 3+ years of experience developing production-level web applications.
• Strong command over React.js or Vue.js, JavaScript, HTML5, CSS3.
• Deep understanding of DOM APIs, native JavaScript, and popular libraries.
• Proficiency in CSS preprocessors (SASS/LESS) and modular CSS (CSS Modules).
• Familiarity with build tools like Webpack, Gulp, or Grunt.
• Experience creating modular, self-contained, and reusable components.
• Strong understanding of cross-browser compatibility and performance optimizations.
• Clean, organized, and maintainable code practices.
• Bonus: Working knowledge of Node.js and backend concepts like APIs, databases, caching layers, and proxies.
• Comfort in implementing pixel-perfect designs, animations, and smooth transitions.
• Excellent communication and teamwork skills.
• A proactive mindset with the ability to work both independently and in a team.

1.       Strong knowledge in Front end scripting like EJS, JavaScript, Jquery

2.       Proficiency with fundamental front-end languages such as HTML, CSS.

3.       Familiarity with JavaScript frameworks such as Angular JS, React, and Amber.

4.       Proficiency with server-side languages such as Python / Ruby / Java / PHP/ .Net

5.       Good Understand with database technology such as MySQL, Oracle, and MongoDB.

• Work with the client and internal web development team to design new products or enhancements.
• Take part in system development including analysis, coding, and testing in an agile product development team.
• To develop business requirements into cost-effective and elegant technical solutions.
• Perform peer design and code reviews with other software engineers.
• Help to evaluate requirements and solutions from a technical perspective and implement custom built solutions. 
• Perform estimates of user stories that are to be implemented to help with product engineering planning.
• Work with backend development members to co-create APIs for frontend consumption
• Mentor less experienced team members on proper standards/techniques to improve their development practices and efficiency.
• Write scripts to perform unit testing, functional testing and assist with user acceptance testing support.
• Optimize UI for efficiency and maintainability
• Perform non-production and production deployment processes as scheduled.
• Provide on-going support to the application.