Frontend Developer (React Js)

About the Role

We are looking for a highly skilled and experienced Senior React Native Developer to join our team and take the lead on developing our cross-platform mobile application. You’ll play a critical role in building, launching, and scaling a high-performance mobile app that runs seamlessly on both iOS and Android platforms from a single codebase.

If you’re passionate about mobile technologies, have a strong command of React Native, and are excited about creating a high-quality product from the ground up, we’d love to hear from you.

Responsibilities

• Lead the end-to-end development of a cross-platform mobile application using React Native.
• Collaborate with product managers, designers, and backend engineers to deliver high-quality user experiences.
• Build reusable components and front-end libraries for future use.
• Optimize app performance for speed and scalability across devices and OS versions.
• Ensure the app complies with design standards and platform-specific guidelines (Apple App Store & Google Play).
• Set up CI/CD pipelines for automated builds, testing, and deployment (e.g., using Fastlane, EAS, or similar).
• Integrate RESTful APIs and third-party services.
• Handle app store submissions and updates.
• Mentor junior developers and enforce best practices in mobile development.

Requirements

Must-Have:

• 5+ years of experience in mobile application development.
• 3+ years of hands-on experience with React Native.
• Strong understanding of JavaScript (ES6+), TypeScript, and React architecture.
• Deep knowledge of iOS and Android mobile app development lifecycle.
• Experience with mobile UI/UX best practices and performance optimization.
• Familiarity with native build tools (Xcode, Android Studio).
• Experience integrating REST APIs and handling network latency issues.
• Proficient with Git, GitHub/GitLab, and agile development practices.
• Experience with push notifications, in-app purchases, deep linking, and analytics SDKs.

Preferred:

• Experience with Expo or EAS for managed workflows.
• Familiarity with mobile CI/CD pipelines (Fastlane, Bitrise, etc.).
• Experience with native modules (Objective-C/Swift and Java/Kotlin) as needed.
• Knowledge of automated testing frameworks (Jest, Detox).
• Published apps in both the App Store and Google Play.
• Prior experience in startups or high-growth environments.

What We Offer

• Opportunity to lead and build a product from the ground up.
• Work with a dynamic and talented team in a fast-paced environment.
• Flexible working hours and remote-first culture.
• Competitive salary and equity options (if applicable).
• Learning and development budget.

The ideal candidate will have at least 2 years of experience in developing scalable and responsive web

applications, and will be able to work collaboratively with other developers and stakeholders to deliver

high-quality software products.

Responsibilities

● Develop and maintain responsive and scalable web applications using React and JavaScript

● Write clean, efficient, and maintainable code that adheres to coding standards and best practices

● Collaborate with other developers and stakeholders to design and implement software solutions

that meet business requirements

● Work with UX/UI designers to implement user interfaces that are intuitive and visually appealing

● Optimize web applications for maximum speed and scalability

● Participate in code reviews, testing, and debugging to ensure that the software meets quality

standards

● Stay up-to-date with the latest industry trends and technologies, and make recommendations to

the company on how to best incorporate them into its products and services

● Proficient in client & server-side JavaScript, HTML5, CSS3 and webpack

● Competent in building single page web applications using Node.js and React Js

● Redux for state management

● Universal rendering (Client-side rendering and Server-side rendering)

● Experience with cross-browser, cross-platform, and design constraints on the web

● Experience in developing automated unit and functional tests

● Experience in an agile development process

● Solid knowledge of algorithms and design patterns

● Have a passion for quality and writing clean, readable code that scales and performs well

● Good interpersonal communication skills

Desired Candidate Profile

● At least 2 years of experience in developing web applications using React/NextJS/VueJs and

JavaScript

About Klenty:

Klenty is a Software Product company operating in the Sales Engagement category. We

are one of the fastest growing SAAS startups in the sales engagement space, headquartered in

California and operating from Chennai, India. Klenty’s Sales Engagement Product helps

thousands of sales teams automate all the repetitive activities involved in the sales process like

sending emails, follow-ups, tracking engagement metrics, etc - so that the sales team can focus

more on activities like building relationships and closing deals. With over 3000 customers all

over the world, we are on a mission to transform every B2B Sales team into an unstoppable

force. Join us in building the future of sales engagement software.

JD :

Responsibilities:

• Developing new user-facing features using ReactJS.
• Building reusable components and front-end libraries for future use
• Translating designs and wire-frames into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following ReactJS workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

We are looking for a React JS/React-Native developer interested in building performant and pixel-perfect web applications. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Responsibilities

• Build pixel-perfect, buttery smooth UIs across both web and mobile platforms.
• Diagnose and fix bugs and performance bottlenecks for performance that feels native.
• Reach out to the open-source community to encourage and help implement mission-critical software fixes—ReactJS moves fast and often breaks things.
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Build and deliver features end to end. (frontend and backend)

Skills

• Firm grasp of the JavaScript and TypeScript language and its nuances, including ES6+ syntax
• Knowledge of functional or object-oriented programming
• Ability to write well-documented, clean Javascript code
• Rock solid at working with third-party dependencies and debugging dependency conflicts
• Understanding of Firebase cloud functions, firestore and offline storage
• Experience with automated testing suites, like (Jest or Mocha)

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 a 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.
• Manage/Lead a team of 10+ javascript fullstack developers to handle a wide range of projects across different products.
• Code reviews, Overall project estimations, Estimation reviews, Project planning.
• Interact with stakeholders for the development requirements gathering.
• Layout a technical career growth plan for the team members.
• 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.
• 9-12 yrs of software development on advanced JavaScript stack (Native Javascript, Asynchronous Request Handling, AJAX, HTML5, CSS3, etc).
• 2-4 yrs of experience in leading and mentoring a team. 
• 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.

.

Your role and responsibilities

• Integrating REST APIs in front-end application using React JS
• Implementing business logic in front-end application using javascript, should be able to handle complex JSON architecture.
• Should be able to manage states using Redux, Redux thunk/saga, Mobx.
• Should be comfortable in using both functional and class components in React.
• Should be able to create reusable components to make efficient applications. We hate code duplication.
• Must be familiar with popular React UI libraries like Material UI, Antd.
• Implement best practices and constantly learn new ways of keeping codebases up to date.
• Having knowledge in Typescript, GraphQL, NextJS, Socket.io is like a match made in heaven.

Criteria

• 2+ years of work experience with Javascript and React JS.
• Proficient understanding of code versioning tools, such as Git.
• Open-minded individual, open to learning new things
• A bit lazy is okay. Lazy people always find the quickest way to reach the solution. They write the most efficient code. We love that.
• You care about the design and user experience of an application. The choice of third-party libraries should be elegant.