Lead Frontend (React Js) Developer

Job Description

As a React Native Developer at Marmeto, you will play a critical role in building high-performance, cross-platform mobile applications for iOS and Android. You will collaborate with UX/UI designers, backend engineers, and product stakeholders to deliver intuitive and scalable mobile experiences. This role demands a developer with a deep understanding of mobile architecture, native modules, and modern development best practices.

Skills:

• Minimum 4 years of hands-on experience with React Native for Android and iOS development.
• Strong proficiency in JavaScript, TypeScript, and ES6+ features.
• Solid understanding of React Native architecture, including Hooks, Redux/MobX, and Context API.
• Experience with native module integration (Android/iOS) and third-party libraries.
• Proficient in using React Navigation, AsyncStorage, and mobile design patterns.
• Familiarity with debugging tools like Flipper, Chrome DevTools, and React Native Debugger.
• Experience in publishing apps to the App Store and Google Play.
• Good understanding of mobile performance optimization and memory management.
• Proficiency with version control systems like Git.

Roles & Responsibilities:

• Design, develop, and maintain cross-platform mobile applications using React Native.
• Collaborate with UI/UX designers to implement pixel-perfect interfaces and interactions.
• Work closely with backend teams to integrate APIs (REST/GraphQL) seamlessly.
• Write clean, modular, and scalable code following best practices and design patterns.
• Troubleshoot, debug, and optimize mobile apps for maximum performance.
• Stay updated on emerging trends in mobile development and bring innovation into the team.

Requirements

Mandatory

• Should have built solutions/applications end-to-end, not just contributed as part of a larger team.
• Should envision continuing in a deep mobile development role 5+ years down the line.
• Strong command over JavaScript, TypeScript, and React Native internals.
• Experience working with Redux, React Hooks, and lifecycle methods in mobile contexts.
• Deep understanding of platform-specific limitations, capabilities, and mobile UI/UX standards.

Essential

• Proficiency with Git and collaborative workflows (e.g., branching, PRs).
• Familiarity with CI/CD for mobile.
• Understanding of offline storage, background sync, and performance monitoring.

Good to Have

• Knowledge of native development (Swift/Kotlin) to bridge native modules when needed.
• Exposure to tools like Figma, Sketch, or Zeplin for design collaboration.
• Experience with e-commerce platforms like Shopify, BigCommerce, or similar.

Core responsibilities

•      Collaborate with product teams to more accurately define new features

•      Collaborate with UX in the building of a design system/component library

•      Ensure high performance of all systems developed

•      Aware of the relationship between development and business with a strong sense of ownership

•      Employ the latest techniques such as agile software development

•      Basic working knowledge of Unix/Linux

•      Excellent problem solving and coding skills in Javascript/Angular

•      Strong interpersonal, communication and analytical skills

•      Should have the ability to express their design ideas and thoughts

Job Brief

•      JavaScript and angular expertise

•      Experience with libraries such as bootstrap, Ag-grid, formly, observables, and ngrx

•      You enjoy working with new technologies, and are curious and energetic

•      Experience working with REST APIs

•       Good understanding about authentication and security

•      Create and maintain various unit and integration tests

•      You enjoy working in a creative and agile environment that moves fast

•      Ability and interest in providing mentorship to junior members of the team

•      Write high quality code and Conduct code reviews

•      Being resourceful and detail-oriented, along with being an outside the box thinker!

•      Experience being a great team player, who work collaborative, and brings a positive attitude

We are seeking a highly skilled Frontend Tech Lead with extensive experience in React.js developmentand team leadership. As a Tech Lead, you will be responsible for leading a team of developers while alsocontributing to the development of high-quality software solutions using React.js and related technologies.

Responsibilities :

● Lead a team of software developers in the design, development, and implementation of React.js-based software solutions.

● Provide technical guidance and mentorship to team members, ensuring best practices are followed and code quality is maintained.

● Collaborate with product managers, designers, and other stakeholders to understand requirements and translate them into technical solutions.

● Architect and design scalable, maintainable, and high-performance software systems using React.js and related technologies.

● Implement and maintain coding standards, code reviews, and other processes to ensure high-quality deliverables.

● Stay up-to-date with the latest trends and best practices in React.js development and incorporate them into the development process.

● Troubleshoot and debug complex technical issues, providing timely resolutions to ensure project deadlines are met.

● Work closely with cross-functional teams to ensure alignment on project goals, timelines, and deliverables.

● Participate in Agile/Scrum ceremonies such as sprint planning, daily stand-ups, and retrospectives.

Requirements :

● Bachelor's degree in Computer Science, Engineering, or related field.

● Minimum of 8 years of professional experience in software development.

● Extensive hands-on experience with React.js and related libraries/frameworks.

● Minimum 2-3 years of experience in leading and managing software development teams, with a proven track record of overseeing teams of at least 5-6 members.

● Strong understanding of software engineering principles, design patterns, and best practices.

● Experience with implementing or contributing to design systems, which helps maintain consistency across large applications.

● Experience with modern front-end development tools and workflows.

● Proficiency in HTML, CSS, and JavaScript.

● Excellent problem-solving and analytical skills.

● Strong communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams.

● Understanding and application of security best practices in React applications, such as preventing XSS attacks, managing authentication/authorization securely, and understanding common vulnerabilities.

● Experience with Agile/Scrum methodologies is a plus.

Job Description:

We are looking for an experienced developer to be a part of our growing team. You will be working here to create, design and develop software for both web and mobile applications using Node js.

Skills to be required:

1. To design, develop and maintain Scalable web applications using node js.
2. Collaborate with front-end developers on the integrations of elements.
3. To write Reusable, testable and efficient code.
4. working closely with front-end developers to integrate user-facing elements with server-side
5. Implement security and data protection measures.
6. Perform code reviews, debug and improve applications for performance.

 Responsibilities:

1. Proven experience for 2-4 years of experience as a Node.js Developer
2. Proficiency with front-end technologies like HTML,CSS, Javascript and React js
3. Experience with RESTful API Development
4. Knowledge of database systems like MongoDB and Mysql
5. Understanding of code versioning tools like Git
6. Strong problem solving, communication skills and team work abilities.

• Participate heavily in the brainstorming of UI/UX architecture and feature design
• Interface with external customers and key stakeholders to understand and document design requirements
• Work cross-functionally with Engineering, Data Science, Product, UX, BD, and Infrastructure teams
• Drive best coding practices across the company (i.e. documentation, code reviews, coding standards, etc)
• Perform security, legal, and license reviews of committed code
• Complete projects with little or no supervision from senior leadership

• Must have at least 2+ years experience in front-end web development with the following tools: HTML5, CSS, Webpack, Responsive web design, ReactJS (Components, Router, Redux, Flux, Chart Libraries i.e. Google Charts), Node.js, REST APIs, and other essential features)
• Built and deployed customer-facing services and products at scale
• Developed unit and integration tests
• Solid instruction-level understanding of Object Oriented design, data structures, and software engineering principles

• You have a strong background in natural language processing, statistical modeling, and/or machine learning
• Experience with open source projects in a startup environment
• Experience with large-scale distributed systems that have thousands of microservices and manages millions of transactions per day
• Worked on products where experimentation and data science are core to the development
• Experience with Python and API frameworks (Flask)
• BS, MS or equivalent

• Should have experience in  developing and working on consumer facing web/app
• Proficient understanding of JavaScript libraries and frameworks ReactJS
• Proficient understanding of server side rendering through Next.js
• Proven skillsets in responsive Web UI development for enterprise application using technologies such as HTML5, CSS, JavaScript, JQuery, Bootstrap, React JS Good understanding of Data Structures, Algorithms and Operating Systems
• Should have experience on HTML5/CSS3, Javascript ,Redux, APIs Integration
• 3-4 years of experience in building client side cross platforms javascript apps in Web & mobile.
• Good experience of developing and integrating APIs
• Develop high-quality software design and architecture
• Review and debug code
• Find and address performance issues
• Proficient understanding of Git

JOB SUMMARY:

The Senior Software Engineer designs, develops, troubleshoots, and debugs software applications for our core product. This includes developing software components including Frameworks, APIs, Websites, Utilities, Databases, and Internet-related tools. Demonstrate technical leadership, mentor junior team members, contribute in effort estimation and identify hardware needs.

MINIMUM QUALIFICATIONS AND REQUIREMENTS:

• Bachelor’s Degree in Computer Science or equivalent
• 4+ years working with React Js, exposure to Ember JS will be an advantage
• 5-12 years of industry experience in programming web applications, mobile and/or large-scale enterprise products.
• Proficient in JavaScript, CSS
• Strong experience in one of the following JavaScript frameworks: Ember, React, Angular
• Experience in XML, HTML, IIS
• Familiar with Agile methodologies
• Sense of ownership
• Passion for troubleshooting and problem solving
• Detailed oriented, professional, and possesses a positive work attitude
• Communicate professionally both verbally and in writing
• Extensive experience creating high-quality software in a team environment
• Experience leading projects from start to finish
• Experience with test-driven development (TDD) and/or writing and maintaining high-level test coverage, including both unit and integration tests

Job Type: Full-time

Salary Offer: 3L PA - 5.4L PA

Job Location: Remote for 6-12 months due to the pandemic, then Mumbai, Maharashtra

Required experience:

1-2 years and above experience in developing frontend UIs using HTML5, CSS, Javascript with ReactJS. Candidate must have experience with data binding and state management (Redux/MobX)

Key Skills required :

1. Proficiency in HTML5 development

2. Proficiency in CSS Frameworks like Bootstrap ⅘

3. Strong understanding of Javascript

4. Hands on experience in building and implementing UIs in ReactJs including experience in building components, observables, state management and data binding

5. Strong expertise in building Responsive Websites

6. Experience fixing performance issues using tools like GTMetrix and Pagespeed Insights

7. Working experience in maintaining code versioning by committing to Git repositories

KRAs includes :

1. Understanding the scope of work and arriving at timelines

2. Frontend UI development using Reactjs, HTML5, Javascript and CSS

3. Implementing media queries and following Responsive Web Design principles for responsive websites

4. Implementing state management, databinding and mocking APIs

5. Unit testing prepared web applications and HTML pages

6. Coordinating with the testers to resolve any bugs

7. Reporting on daily and weekly progress

8. Optimization and performance tuning of code