Senior Frontend Engineer

Engg; Bengaluru; Hybrid; INR 1,400,000 - 2,200,000; Full time

Job summary

Coupang is seeking a Senior Software Engineer for frontend platforms to deliver high-performance, customer-facing UI across web applications. You will design scalable frontend architectures, build reusable components, and collaborate with product and backend teams to enhance user journeys.

Ideal candidates have 4–7 years of frontend experience, strong JavaScript skills, and a track record of optimizing performance in large-scale B2C environments.

Qualifications

• At least 4–7 years of frontend engineering experience.
• Strong proficiency in JavaScript and modern frontend frameworks like Vue.js or React.js.
• Experience building customer-facing (B2C) web applications at scale.
• Strong understanding of UI development principles, component-based architecture, and reusable design systems.
• Experience working with Node.js for frontend/backend integration layers.
• Proven experience delivering high-performance, low-latency user interfaces.
• Experience optimizing frontend performance (rendering, loading time, responsiveness).
• Strong understanding of browser fundamentals, networking, and client-side performance tuning.
• Experience building scalable frontend systems in high-traffic environments.
• Strong problem-solving skills with attention to UI quality and performance.
• Experience collaborating closely with backend, product, and design teams.

Responsibilities

• Build scalable, high-performance user interfaces for customer-facing applications using React and modern frontend frameworks.
• Develop reusable components and modular UI architectures, ensuring consistency and maintainability across large systems.
• Collaborate cross-functionally to deliver intuitive, seamless user experiences for high-impact B2C products.
• Optimize for low latency, fast rendering, and responsiveness in high-traffic, large-scale environments.
• Own end-to-end frontend systems, driving performance, reliability, and engineering excellence.
• Deliver customer-first experiences at scale, continuously improving UI quality and functionality for millions of users.

Skills

Frontend engineering

JavaScript

React.js

Vue.js

Node.js

Performance optimization

Tools

React

Job description

Company Introduction

We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did we ever live without Coupang?” Born out of an obsession to make shopping, eating, and living easier than ever, we’re collectively disrupting the multi-billion-dollar e-commerce industry from the ground up. We are one of the fastest-growing e-commerce companies that established an unparalleled reputation for being a dominant and reliable force in South Korean commerce. We are proud to have the best of both worlds — a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurs surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands‑on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day. Our mission to build the future of commerce is real. We push the boundaries of what’s possible to solve problems and break traditional tradeoffs.

Role Overview

The Micro Frontend Platform team is responsible for building highly scalable, customer-facing user interfaces that power critical experiences across Coupang’s ecosystem. This is a pure frontend engineering role focused on delivering high-quality, performant UI for large-scale, consumer-facing applications. The team works on systems that are directly exposed to end users, requiring strong emphasis on responsiveness, low latency, and seamless user experience. These applications operate at high scale and are critical to delivering intuitive and engaging customer journeys across web platforms. As a Senior Software Engineer, you will contribute to building robust UI architectures, ensuring high performance and scalability, and delivering polished user interfaces that directly impact customer experience while collaborating closely with product and backend teams.

What You Will Do

• Build scalable, high-performance user interfaces for customer-facing applications using React and modern frontend frameworks


• Develop reusable components and modular UI architectures, ensuring consistency and maintainability across large systems


• Collaborate cross-functionally to deliver intuitive, seamless user experiences for high-impact B2C products


• Optimize for low latency, fast rendering, and responsiveness in high-traffic, large-scale environments


• Own end-to-end frontend systems, driving performance, reliability, and engineering excellence


• Deliver customer-first experiences at scale, continuously improving UI quality and functionality for millions of users

Basic Qualifications

• At least 4–7 years of frontend engineering experience


• Strong proficiency in JavaScript and modern frontend frameworks like Vue.js or React.js


• Experience building customer-facing (B2C) web applications at scale


• Strong understanding of UI development principles, component-based architecture, and reusable design systems


• Experience working with Node.js for frontend/backend integration layers


• Proven experience delivering high-performance, low-latency user interfaces


• Experience optimizing frontend performance (rendering, loading time, responsiveness)


• Strong understanding of browser fundamentals, networking, and client-side performance tuning


• Experience building scalable frontend systems in high-traffic environments


• Strong problem-solving skills with attention to UI quality and performance


• Experience collaborating closely with backend, product, and design teams

Preferred Qualifications

• Experience with Vue.js or multiple frontend frameworks in addition to React


• Deep expertise in frontend performance optimization at scale (large user traffic systems)


• Experience building highly interactive, customer-facing applications in B2C environments


• Strong understanding of UI latency optimization and real‑time user experience improvements


• Experience working on large-scale frontend architectures (micro-frontends, modular UI systems)


• Familiarity with design systems and component libraries for consistent UI development


• Experience working in high‑scale environments where UI performance directly impacts customer experience


• Prior experience with companies building consumer-facing products (e.g., e-commerce, ride-sharing, fintech apps)

Type of work model

Hybrid / Onsite / Remote working Our Hybrid work model: Coupang hybrid work model is designed to enable a culture of collaboration that acts a catalyst to enrich the experience of employees. Employees are required to work at least 3 days in the office per week, with the flexibility to work from home 2 days a week, depending on the role requirement. Some businesses may require more time in office due to nature of work.

Details to consider

Those eligible for employment protection (recipients of veteran’s benefits, the disabled, etc.) may receive preferential treatment for employment in accordance with applicable laws.