Senior UI Engineer

We’re Hiring – Frontend Developer (3.js)

Location: Chennai

Experience: 0–1 Years

At Hexr Factory, we are always exploring the possibilities to bridge the physical and digital worlds. We design and build Metaverse and Digital Twin technologies for the future of industry and entertainment.

We are looking for a Frontend Developer (3.js) to join our team in Chennai. The role involves designing, building, and configuring applications to meet business and application requirements using React Three Fiber, JavaScript, HTML5, CSS, TypeScript, and ES6.

The ideal candidate will have experience working with Three.js, WebGL, and Canvas/CSS animations, along with knowledge of browser-based 3D rendering and 3D graphics. You should be comfortable collaborating with the design team to implement a clean, elegant user experience and be capable of building scalable, high-performance web applications.

Qualifications:

Bachelor’s or Master’s degree in Mathematics, Commerce, Computer Science, Electronics, Electrical, or Mechanical Engineering with a consistent high academic track record.

0–1 years of relevant experience.

Skills Required:

Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.

Experience using TypeScript to develop UI components with React and Angular.

Knowledge of 3D technologies such as WebGL and Three.js.

Basic understanding of 3D mathematics.

Familiarity with REST/JSON and Git.

Passion for new technology and innovation.

Ability to write clean, maintainable code.

Excellent verbal and written communication skills.

If you are passionate about technology, eager to learn, and excited about working on 3D applications and digital innovation, we’d love to hear from you.

Looking for candidates only with tier 1 colleges OR have experience in a product-based company.

You will be designing front-end architecture with architectural guidelines in mind (secure,high-performing, scalable, extensible, flexible, simple).
● Architect, Design and develop front-end applications.

Desired Skills
● Minimum 6+ years of coding experience.
● Strong hands-on experience on React.js, MVC & related JS Frameworks.
● Strong knowledge of HTML5, CSS3, responsive design, single page applications.
● Build a highly scalable product right from scratch.
● Expertise in caching, minification, bundling techniques to improve front-end performance.
● Experience in working with AB Testing.
● Experience in using front-end monitoring tools to troubleshoot errors and recognise performance bottlenecks.
● Strong foundation in computer science fundamentals: data structures, algorithms, and coding.
● Proficient understanding of code versioning tools(GIT, SVN), working experience with Agile methodology and fast iterative development cycles

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.

About Us:

Docsumo is Document AI software that helps enterprises capture data and analyze customer documents. We convert documents such as invoices, ID cards, and bank statements into actionable data. We work with clients such as PayU, Arbor and Hitachi and are backed by Sequoia, Barclays, Techstars, and Better Capital.

Responsibilities:

• You will be responsible for overseeing the development of Docsumo React webapp.
• You will be working closely with the founders and lead the frontend development
• Serve as a thought leader and mentor on technical, architectural, design and related issues
• You will be responsible to provide oversight, accountability, and leadership for technical decisions.
• You will be designing and building modules in React within the Docsumo webapp.
• Own and Implement the features using the technology stack that we have in place while bringing in flavours of latest but proven trends and methods
• Contribute to Product and Design ideas and Implement them as your own product. We value everyone’s inputs
• Work with our hiring team to hire amazing engineers who will expand the Docsumo culture and product

Skills:

• At least 6+ years years experience building React webapps
• Excellent command over React, redux, javascripts, HTML5 and CSS
• Provided effective team management and mentoring for over 3+ years to foster professional growth and drive team success
• Demonstrated ability to build 0-1 product from using React.
• Demonstrated ability of managing frontend engineers
• Proven skills in developing a production level end to end UI application on their own
• Familiarity with Version Control tools, deployment, cloud services and CI/CD
• Must be self-motivated, flexible, collaborative, with an eagerness to learn
• Comfortable working in an Agile work environment with an incredibly fast pace and a large degree of independence.

Benefits:

• Enjoy the flexibility of a hybrid working model, allowing for a balanced work-life integration.
• Access comprehensive insurance coverage to safeguard your health and well-being.
• Participate in our stock options program to share in the company's success and future growth.

• Experience in web technologies (Object-Oriented JavaScript, HTML, CSS) and experience with web standards, including HTML5 and CSS3
• In depth understanding of Angular concepts and structures
• Should have strong debugging skills on Developer Tools of the browser and Working with Cross Browser UI
• Should have solid understanding and experience (at least 1+ years) with Object-Oriented design and development
• Strong verbal and written communication skills
• Proactive attitude to problem resolution
• Ability to work in a fast-paced environment, and manage time efficiently to meet project timelines
• Ability to work well independently, or with remote teams

• Experience in Agile Software Development projects
• Knowledge on how to create modules and libraries with angular and publish it on platform like npmjs.
• Knowledge on Nrwl's developer tools
• Experience in writing Unit Testing cases.
• Capable to perform code reviews and provide code to optimize performance of the application.