Principal Frontend Engineer

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.

Position:  React/Frontend Developer

Location: Chennai and Exp : 3 to 5 Yrs

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

Responsibilities

• 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
• Monitoring and improving front-end performance.
• Troubleshooting interface software and debugging application codes.
• Documenting application changes and developing updates.

Skills

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (such as Flux or Redux)
• Should have recent experience with React projects (min. 2 years)
• Experience in VueJs is an added advantage
• Familiarity with newer specifications of EcmaScript
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• Familiarity with code versioning tools. 

Responsibilities:

• Design the overall architecture of the web application.
• Maintain code integrity, and quality, and ensure responsiveness of applications.
• Address and improve any technical issues.
• Building reusable components and front-end libraries for future use.
• Must have strong experience in designing and maintaining a database.
• Work with modern frameworks and design patterns, minimum one-year experience with Full stack paradigm required.
• Handle technical queries raised by the development team and provide support and guidance to them.
• Troubleshoot and debug issues, perform testing, and optimize application performance
• Collaborate with front-end and back-end engineers to design and create advanced, elegant, and efficient systems.

Skills:

• Strong proficiency with 3 - 5 years of experience.
• Expertise in Laravel and a good understanding of other core PHP frameworks using REST APIs.
• Professional, definite communication skills.
• Excellent knowledge of HTML, CSS, Ajax, jQuery, and JavaScript.
• Extensive experience in designing and maintaining databases such as MySQL.
• Mastery of CMS such as WordPress and Magento is an advantage.
• Comprehensive knowledge of version controlling – GIT.
• Creating self-contained, reusable, and testable modules and components.
• Optimizing client and server-side code for maximum speed.

JOB DESCRIPTION

Profile Summary

We are looking for experienced and skilled Frontend (React.Js) Developers to join our
core team. Your primary focus will be the development of new features and refinement of
existing features on user-side.

Responsibilities:

• Ensure product delivery is fast, low-cost and sustainable.
• Take responsibility from development to customer support.
• Build robust and scalable production software.
• Improve quality using code reviews, and unit/integration testing.
• Improve efficiency using automation, and methods like test driven development.

Skills & Qualification:

• 2+ years of experience in software development preferably B2C experience.
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Experience in React.Js , Javascript, any experience in React native is a plus
• Experience with popular React workflows (such as Flux or Redux).
• Familiarity with newer specifications of ECMAScript (ES6 & ES5 ).
• Familiarity with RESTful APIs.
• Experience in working with the MERN stack or similar frameworks
• Working knowledge of git for version control.
• Understanding of Unix tools.

• Build fluid, scalable, responsive, and consumer-centric web platforms that target users across a wide array of devices
• Collaborate closely with designers & backend developers and contribute to the full product development life-cycle from design and development to roll out
  Take ownership of work and deliver quality results consistently
• Own the delivery of multiple features in a fast-paced work environment
• Build optimized and modular components to provide performance-oriented solutions
• Work in a dynamic and collaborative culture ensuring good teamwork and communication with remote team members when needed

• 4+ Years of experience in frontend web development (1+ in ReactJS)
• Strong past experience of building, scaling and maintaining feature-rich customer-facing single-page applications
• Ability to translate designs into UI elements with accuracy and an eye for fluidity and responsiveness; strong grasp of any of CSS / sass / less
• Proven ability to implement key concepts of state management, security, and caching practices in enterprise-level web applications used at scale
• Proficient understanding of compatibility issues across different browsers and web and mobile devices and available ways to work around them
• Familiarity with the react ecosystem and popular libraries in that ecosystem
• Strong grasp over core web development concepts like HTML5, JavaScript, CSS3, general Web 2.0 techniques, and working without modern component libraries
• Experience with designing secure web applications with a strong understanding of common security vulnerabilities and best practices
• Understanding of data structures, algorithms and object-oriented programming
• Strong grasp over concepts of performance, optimization, lighthouse, etc
• Strong handle over Git, following best practices to facilitate collaboration

• Hands-on experience with supporting payments and integrating payment gateways
• Experience with progressive web apps, service workers
• Strong grasp over frontend unit and end-to-end testing frameworks

• We are looking for a JavaScript developer who is proficient with React.
• Your primary focus will be on designing and developing products using Core UI and React.
• Should have good hands on experience in node, sass, javascript ES6,laravel concepts

Experience :  Minimum 1 year to 2 years experience required.

Education: Any Engineering Graduate

Work Location:  Anywhere in India (Remote Work)

Job Requirements:

• 1+ years of professional experience in Information Technology field as Front End Developer
• Strong experience in HTML, CSS, Java Script, JQuery and Bootstrap
• Knowledge of formal methods and techniques in software development
• Experience / Knowledge in the following technologies/languages/libraries/frameworks:
• Exposure server side programming using Python / PHP / Java / C#
• Experience with Version Control Software (GIT)
• Ability to work independently and direct a team of any size (small to medium or large)
• Excellent written and oral communication skills

If the above assignment and work practice are exciting you, then apply.  We will invite video call meeting for shortlisted candidates after assessment.

Hiring For

Front-End Engineer - I / II / III

Radical is a platform connecting data, medicine and people -- through machine learning, and usable, performant products. Software has never been the strong suit of the medical industry -- and we are changing that. We believe that the same sophistication and performance that powers our daily needs through millions of consumer applications -- be it your grocery, your food delivery or your movie tickets -- when applied to healthcare, has a massive potential to transform the industry, and positively impact lives of patients and doctors. Radical works with some of the largest hospitals and public health programmes in India, and has a growing footprint both inside the country and abroad. 

As a Full Stack Engineer at Radical, you will:

• Work closely with all stakeholders in the healthcare ecosystem - patients, doctors, paramedics and administrators - to conceptualise and bring to life the ideal set of products that add value to their time
• Write code on the front-end, the back-end and anything it takes to solve the problems and delight users both internally and externally
• Build systems which have an extraordinary emphasis on capturing data that can help build better workflows, algorithms and tools
• Work on high performance systems that deal with several million transactions, multi-modal data and large datasets, with a close attention to detail

We’re looking for someone who has:

• Familiarity and experience with writing working, well-documented and well-tested code in at least two of the following: React/Redux (preferred), NodeJS (preferred), Golang and Python
• Proficiency in the features of the language they are using, with knowledge of standards and best practices (Eg: ES2015 and above, Python 3.5 and above, React Hooks/HOC/Redux)
• Knowledge of databases, and familiarity with REST API patterns
• Experience integrating with a wide variety of external tools and services
• Experience navigating AWS and leveraging appropriate services and technologies rather than DIY solutions (such as hosting an application directly on EC2 vs containerisation, or an Elastic Beanstalk)

It’s not essential, but great if you have:

• An established track record of building systems from scratch
• Experience with microservices and decomposition of monolithic architectures
• Proficiency in automated tests
• Proficiency with the linux ecosystem
• Experience in deploying systems to production on cloud platforms such as AWS
• Experience in TypeScript
• Meaningful open source contributions 

The position is open now, and we are onboarding immediately. 

Please write to us with an updated resume, and one thing you would like us to see as part of your application. This one thing can be anything that you think makes you stand apart among candidates: it can be an interesting hobby project that you’ve self-hosted, a research paper that’s been published, a collection of blog posts you’ve written, a repository you maintain, or your contributions to a major library. 

Radical is based out of Delhi NCR, India, and we look forward to working with you!

We're looking for people who may not know all the answers, but are obsessive about finding them, and take pride in the code that they write. We are more interested in the ability to learn fast, think rigorously and for people who aren’t afraid to challenge assumptions, and take large bets -- only to work hard and prove themselves correct. You're encouraged to apply even if your experience doesn't precisely match the job description. Join us.