Frontend SDE 2/3

SDE-3 Frontend Engineer

Location

Mumbai (preferred) / Remote, India

Employment Type

Full-time

Experience

6–10 Years

About the Role

We are looking for a Senior Frontend Engineer (SDE-3) to lead the design and delivery of world-class user experiences across Pepper's product suite. This is not a purely execution role — you will shape frontend architecture, establish engineering standards, and bring an AI-native lens to how interfaces get built. You will own the frontend end to end, mentor engineers, and partner closely with product and design to ship experiences that are fast, accessible, and intelligent.

Key Responsibilities

Architect and lead the development of scalable, performant frontend systems using React and Next.js

Define frontend engineering standards, patterns, and best practices across the team

Build and ship AI-powered UI features — conversational interfaces, agent-driven workflows, real-time streaming interactions — as first-class product experiences

Partner with product and design to translate complex requirements into clean, intuitive interfaces

Own performance, accessibility, and reliability across the frontend stack

Lead code reviews, technical design discussions, and frontend architecture decisions

Mentor SDE-1 and SDE-2 engineers, raising the bar on frontend craft and AI-native thinking

Identify and resolve performance bottlenecks, rendering issues, and UX gaps proactively.

Must-Have Skills

Expert-level React.js and Next.js, deep understanding of rendering models, SSR, ISR, and app architecture

TypeScript — strong typing, maintainable abstractions, scalable codebases

Strong CSS fundamentals, responsive design, design systems, component libraries

State management patterns at scale (Zustand, Redux, React Query, or equivalent)

REST API integration and experience working with async data flows

Deep understanding of frontend performance, Core Web Vitals, lazy loading, bundle optimisation

Experience with testing frameworks, Jest, Playwright, Cypress or equivalent

Git, CI/CD, and collaborative development workflows

AI-native thinking, default instinct to consider LLMs, streaming, and agentic patterns in product decisions.

Strongly Preferred

Experience building AI-powered frontend experiences, streaming LLM outputs, chat interfaces, agent step visualisation, tool-call feedback loops

Familiarity with design systems and component library ownership

Exposure to WebSockets, SSE, or real-time data in production

Prior experience in a tech or SaaS product company at scale.

What Success Looks Like

You own and drive complex frontend initiatives from design to production independently

Your code sets the standard, others reference it, learn from it, and build on it

You proactively identify UX and performance improvements before they become problems

You are a force multiplier for junior engineers on the team

You bring AI into the product naturally, not as a feature bolt-on, but as a design instinct