Frontend Engineer

PayPay India; Gurugram District; On-site; INR 1,200,000 - 2,500,000; Full time

Job summary

PayPay India is seeking a Frontend Engineer to build and scale UI/Product experiences for web apps. You’ll collaborate with Product, Design, and Backend teams to deliver features and contribute to a growing design system.

You will translate requirements into clean, scalable UI implementations, write modular code, optimize performance, and participate in code reviews to raise engineering quality. Strong React or Vue experience is expected in a fast-paced environment.

Qualifications

• 3-5 years of professional frontend development experience.
• Solid experience in React and/or Vue.
• Proven ability to write readable, modular, production-quality code.
• Strong problem-solving skills with practical web-focused DSA knowledge.
• Performance awareness to identify bottlenecks and optimize.

Responsibilities

• Deliver features end-to-end with scalable UI components.
• Build reusable UI components and extend our design system.
• Integrate APIs and handle loading/error/empty states with clear UX.
• Write maintainable, modular code with clear interfaces.
• Optimize rendering, network and bundle performance.
• Participate in code reviews and raise engineering standards.
• Collaborate with PM/Design/Backend to clarify requirements.
• Support observability and debug production issues.
• Grow toward full-stack ownership with NestJS/Express as needed.

Skills

React

Vue

Frontend dev

DSA

Performance

i18n

Accessibility

Code reviews

Design systems

Nest/Express

Tools

NestJS/Express

Storybook

Sentry

Kibana

New Relic

Google Analytics

Firebase

Job description

PayPay is looking for a Frontend Engineer to build and scale UI/Product experiences for our web applications. You’ll work closely with Product, Design, and Backend teams to deliver high-quality features, contribute to a growing design system.

Primary Responsibilities

• Deliver product features end-to-end: translate requirements into clean, scalable UI implementations with well-structured components and predictable data flow
• Build reusable UI components and patterns: contribute to and extend our design system using tools like Storybook; prioritize consistency, accessibility basics, and developer ergonomics
• Integrate APIs and handle real-world states: implement robust data fetching patterns (pagination, caching, retries), and manage loading/error/empty states with clear UX behavior
• Write maintainable, modular code: apply good separation of concerns (presentation vs business logic vs API layer), meaningful abstractions, and clear naming; keep codebase easy to extend
• Optimize performance and reliability: identify bottlenecks (rendering, network, bundle size), apply pragmatic improvements (memoization, debouncing, virtualization where relevant), and avoid async pitfalls (stale responses, race conditions)
• Improve engineering quality: participate actively in code reviews, raise the bar on standards, and help enforce best practices around testing strategy, i18n, and build tooling
• Collaborate cross-functionally: work closely with PM/Design/Backend to clarify requirements, propose tradeoffs, and deliver iteratively with high ownership
• Support operational excellence: use observability tooling (e.g., Sentry, New Relic, Kibana) to debug production issues, measure impact, and improve stability
• Grow toward full-stack ownership (optional path): partner with backend teams and gradually take on BFF/API contributions using Node.js (NestJS/Express) as needed
• Middlewear : NestJS, Express
• Obs/Analytics: Sentry, Kibana, New Relic, Google Analytics, Firebase

Qualifications

• 3- 5 years of professional frontend development experience.
• Solid experience in React and/or Vue
• Proven ability to write readable, modular, production-quality code
• Strong problem-solving skills with practical DSA (web-relevant) comfortable reasoning about time/space complexity
• Performance awareness: can identify bottlenecks and implement pragmatic optimizations
• Ability to do low-level design (LLD) for frontend features: break down requirements into components/modules, define interfaces, and plan implementation in milestones
• Good communication: can explain approach and tradeoffs clearly
• Leverage AI/LLM based tools in daily workflows

Preferred Qualifications

• Experience with Nest.js (routing, SSR/CSR tradeoffs, data fetching strategies)
• Experience with Node.js or API integration patterns (REST, pagination, auth flows, error handling)
• Familiarity with design systems, accessibility basics, and responsive UI patterns
• Exposure to frontend observability (error logging, basic performance metrics)
• Experience with micro-frontends (e.g., single-spa) or large-scale frontend architectures

What success looks Like

• You can independently deliver a feature end-to-end with clean architecture and reliable async handling
• Your code is modular, maintainable, and performance-conscious.
• You contribute to consistent UI patterns and raise team quality through reviews and collaboration.