ReactJs Developer

Job Title : Lead Web App Developer – Frontend

Experience : 10+ Years

Location : Bengaluru

Work Mode : Hybrid (3 days in office)

Role Overview :

We are seeking a Lead Frontend Engineer to build and maintain responsive, cloud-based web applications. This role involves developing efficient user interfaces using React.js, collaborating closely with UX and backend teams, and ensuring high-quality code.

Key Responsibilities:

• Frontend Development: Create and maintain web applications using React.js, HTML, CSS, and JavaScript/TypeScript.
• Collaboration: Work with UX designers to deliver excellent user experiences and ensure seamless backend integration.
• Code Quality: Write clean, efficient, and maintainable code while staying updated with modern practices.
• Build & Deployment: Manage build pipelines with Jenkins, deploy to CDNs, and leverage GCP for scalable solutions.
• Technical Expertise: Implement JavaScript frameworks and libraries for web analytics and use Git for version control.

Requirements:

Technical Skills:

• Proficiency in React.js, HTML, CSS, JavaScript/TypeScript, and Node.js frameworks.
• Strong debugging and problem-solving skills.
• Exposure to RDBMS and SQL (preferred).

Soft Skills:

• Excellent communication and collaboration abilities.
• Leadership skills to guide and inspire a team of developers.
• Education: Bachelor's/Master’s in Computer Science or related fields.

Notice Period: 30 days preferred

Interview Process:

1. Technical Round: Online technical assessment (1 hour).
2. Face-to-Face Interview: In-person interview with the team at the Bengaluru office (3 hours).
3. Final Round: Online interview with the CEO (30 minutes).

Additional Information:

• Candidates from Bengaluru or willing to relocate are preferred.
• F2F interview attendance on a weekday is mandatory.

·      7+ years of professional experience in front-end development.

·      5+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)

·      Strong understanding of JavaScript (ES6+), HTML5, and CSS3.

·      Experience with RESTful APIs, GraphQL, and WebSocket integration.

·      Proficiency in modern build tools (Webpack, Vite, Babel, etc.).

·      Expertise in state management libraries (Redux, MobX) and React Query.

·      Solid understanding of UI/UX principles and responsive design.

·      Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).

·      Familiarity with modern CI/CD pipelines and version control tools (Git).

About One Impression

One Impression is one of the world’s largest influencer marketing platforms, working with 300+ global brands like Unilever, Nestle, and Amazon to connect with a diverse creator network. Our platform empowers brands and creators to collaborate seamlessly and scale their reach. To capture a significant share of global media ad spend, One Impression is quickly becoming the industry’s go-to influencer marketing platform.

About the Role

We are looking for a Frontend Engineer (SDE II) who is experienced in both React.js for Web and React Native for Mobile Apps. You will be responsible for architecting, implementing, and optimizing web and mobile applications while collaborating closely with Product, Design, and Backend teams.

This role is perfect for someone who enjoys working across platforms, building scalable systems, and enhancing the developer experience.

Key Responsibilities

• Architect and develop frontend solutions for both Web (React.js) and Mobile Apps (React Native).
• Build and optimize config-driven systems, reusable components, and common libraries.
• Work closely with Product Managers, Designers, and Backend Engineers to create seamless user experiences across platforms.
• Own and drive React Native-based mobile applications, ensuring modular, scalable, and performant code.
• Optimize web and mobile performance for speed, responsiveness, and efficiency.
• Set up and manage CI/CD pipelines for both web (Docker, Vercel) and mobile apps (Fastlane, App Store/Play Store).
• Implement and maintain state management using Redux, Redux Saga, Recoil, or MobX.
• Work with mobile-specific integrations, such as Firebase Push Notifications, Deep Linking, and Native Modules.
• Ensure cross-platform consistency by handling browser compatibility (web) and device compatibility (mobile).
• Write clean, maintainable, and reusable code, following best practices and design patterns.
• Debug and fix issues rapidly, ensuring a seamless Web & Mobile experience.
• Stay up-to-date with the latest trends and contribute to open-source projects, tech talks, and internal knowledge sharing.

Requirements

• 3-5 years of experience in frontend development, working with both React.js (Web) and React Native (Mobile).
• Strong expertise in JavaScript (ES6+), React.js, and React Native.
• Experience with bundlers like Webpack, Rollup, and Metro for React Native.
• Deep understanding of mobile CI/CD (Fastlane, App Store, Play Store) and web CI/CD (Docker, Vercel, Jenkins, GitHub Actions).
• Strong grasp of Web & Mobile performance optimization techniques.
• Experience with Redux, Redux Saga, MobX, or Recoil for state management.
• Good understanding of mobile UI/UX principles, animations (Reanimated, Gesture Handler), and responsive design.
• Basic familiarity with native iOS/Android development (Swift/Kotlin is a plus).
• Experience with Unit Testing (Jest, React Native Testing Library, Detox, Cypress, Appium, or Espresso).
• Strong debugging skills using Chrome DevTools (Web) and Flipper, Xcode, Android Studio (Mobile).
• Ability to work independently, take ownership of projects, and mentor junior engineers.
• Open to feedback and collaborative in working towards the best user experience.

Why Join One Impression?

- Be a part of one of the largest influencer marketing platforms globally, working with top brands and influencers.

- Opportunity to lead and shape a fast-growing marketplace product.

- Competitive salary and benefits package.

- A collaborative and innovative work culture in a rapidly scaling company.

Role and Responsibilities 

We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.  

• • Developing new user-facing features using React.js 
• • Building reusable components and front-end libraries for future use 
• • Translating designs and wireframes into high quality code 

• • Optimizing components for maximum performance across a vast array of web-capable devices and browsers. 
• • Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model 
• • Thorough understanding of React.js and its core principles 
• • Experience with popular React.js workflows (such as Flux or Redux). 
• • Experience in Bootstrap framework.  

• • Familiarity with newer specifications of ECMAScript 
• • Familiarity with RESTful APIs 
• • Knowledge of modern authorization mechanisms, such as JSON Web Token 
• • Familiarity with modern front-end build pipelines and tools 
• • Experience with common front-end development tools such as NPM, YARN etc. 

• • Ability to understand business requirements and translate them into technical requirements 
• • A knack for benchmarking and optimization 
• • Familiarity with code versioning tools Azure Devops. 
• • Experience in IDE such as VS code \ VS. 

• Experience – 10 - 14 years 

• Qualification – Any graduate  

The developer will be responsible to build and enhance collaboration functionalities in our products while ensuring seamless user interaction in the platform. Our engineering team works on developing a range of innovative products to facilitate regulatory work flow of medical device companies. An ideal candidate is one willing to work in a tight schedule of a start-up and experienced in building magical user experiences and considers performance to be the key metric in the application.

Responsibilities :

• Develop new features using Angular 9/10
• Develop reusable components
• Write efficient and documented object oriented code
• Write extensive unit test cases and execute them
• Ensure responsive design of the front end

Skills and Qualifications :

• 2-5 years experience in developing web based applications and building product product from scratch

• Detailed understanding of coding and design aspects of Angular 9/10

• Proficiency with Observables, NGRX and websockets

• Knowledge of various Angular/Jquery packages

• Knowledge of Responsive Design

• Knowledge of WYSIWYG editors

• Knowledge of different performance optimization techniques

• Experienced in various data structures and design patterns

• Knowledge of asynchronous programming

• Bachelor’s Degree in computer science or equivalent education.

Requirements

• We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). 

• You will ensure that these components and the overall application are robust and easy to maintain. - You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Skills And Qualifications

• Good understanding of advanced JavaScript libraries and frameworks  ReactJS or Vue JS
• Developing new user-facing features using React.js 
• Experience with popular React.js workflows (such as Flux or Redux)
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model 
• Thorough understanding of React.js and its core principles 
• Knowledge of isomorphic React is a plus - Familiarity with RESTful APIs 
• Knowledge of modern authorisation mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools - Experience with common front-end development tools such as Babel, Webpack, NPM, etc. 
• Ability to understand business requirements and translate them into technical requirements
• Building reusable components and front-end libraries for future use
• Proficient understanding of web markup, including HTML5, CSS3
• Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery
• Good understanding of asynchronous request handling, partial page updates, and AJAX

• Proficient understanding of cross-browser compatibility issues and ways to work around them.
• Proficient understanding of code versioning tools, such as Git / Mercurial / SVN
• Research new technology trends, come up with suggestions and roll out the same
• Expertise in building UI for cross-platform web application.
• Ability to write high-performance, reusable code for UI components.
• Must be a self-starter with a passion to stay current with the newest online technologies.
• Passion for performance debugging and benchmarking
• Excellent communication and problem solving skills. 

Interview Kickstart is one of the leading platforms helping Software Engineers prepare for tough technical interviews. Over the last 5 years we have helped over 3000 engineers Nail the toughest technical interviews on the planet. We are successful, profitable, and have a vision of building the world's largest Career Upleveling platform. 

We are looking for top-notch, motivated engineers to come join our growing team at IK.

Who you are

• You have 2 - 7 years experience.
• You love the buzz of a highly productive and fast moving team.
• Strong product and design sensibilities and an obsessive attention to detail.
• You have a get-things-done attitude and deep empathy for users and fellow teammates.
• You can write testable, maintainable code that’s easy to understand.
• You love coding and look forward to taking on complex, abstract features.
• You don't care about front end, backend kinda titles. You like working anywhere in the "stack".
• You are looking to grow fast with a company that's on a rapid growth path.

What will excite us

• Previous startup experience or experience being part of early teams.
• Experience with the Django & Python universe.
• Experience with both Relational and NoSQL DBs.
• Competitive Programming experience.
• A keen desire to problem solve, brainstorm and debate during the interview.

What will excite you

• Complete ownership
• Experiment, fail and learn.
• High pedigree, high caliber team.
• Contribute to every area of our business. Have a real impact with your work.
• Top of the line compensation.

Requirements

• 3+ years of experience developing modular front-end components using HTML, CSS, JavaScript/Jquery, JSON and micro formats.
• 2+ years of experience in React.
• Played with Webpack and Modular architecture.
• Solid understanding of user-centered design principles.
• Experience in cross-browser compatibility.

Our interview process is designed to help you show the best version of yourself. Once your candidature is finalized, we'll send you a short video explaining the interview process.

Look forward to speaking with you soon!