Founding (Senior) Frontend Engineer

Bujo AI (YC X26) builds conversational AI agents for sales and customer support at large B2C enterprises. We work with multiple Fortune 500 companies and are funded by Y Combinator. We are profitable and fast-growing. Based in San Francisco, USA. Founded by Nalin Gupta -2x YC founder, one exit in self-driving cars, Forbes 30 Under 30, IIT Kharagpur alum.

The role

This is a founding frontend role. You will own the product UI and frontend architecture end-to-end, shipping a high-performance, real-time web app used by enterprise customers. You will work closely with the founder and backend/AI team.

• Compensation: Rs. 40 – 60 lakh/year
• Heavy equity (founding role, YC-backed)
• Fully remote (India-based)

What you’ll build

• A production-grade web app in Next.js + React + TypeScript.
• Real-time interfaces using WebSockets for live sync and event-driven UI.
• Audio and voice workflows: browser-based voice capture, audio streaming, live transcription UI.
• Polished UI: responsive layouts, accessibility, and high-quality CSS + animations (micro-interactions, motion).
• Performance and caching: SSR/SSG/ISR, caching strategy, efficient rendering, code splitting, CDN patterns.
• Robust state and sync: Redux / Zustand / Jotai, offline-first or local-first patterns, IndexedDB.
• Deep browser integrations: Web Audio API, MediaRecorder, Service Workers, PWA capabilities.
• Production observability: error tracking, performance monitoring, real-user metrics, and feature instrumentation.

Responsibilities

• Ship features weekly with high quality and strong UX polish.
• Design and maintain a scalable frontend architecture (performance, caching, state, data flow).
• Build reliable real-time experiences (connection lifecycle, retries, latency handling).
• Own frontend quality: testing strategy where needed, monitoring, debugging, and incident response.
• Collaborate tightly with the backend to define APIs, payloads, and reliability standards.

Requirements

• 4 to 5+ years of frontend engineering experience.
• Strong skills in React, Next.js, TypeScript, and modern JavaScript.
• Excellent CSS fundamentals and comfort with animations and UI polish.
• Firm grasp of state management patterns and tradeoffs.
• Solid understanding of caching and performance optimization.
• Hands-on experience with WebSockets and real-time UI.
• You have shipped a product used by 1,000+ customers/users in production.
• Comfortable with fundamentals (including DSA) and writing clean, maintainable code.

How to apply

Please apply through YC portal along with your LinkedIn and GitHub profile, and A short note on the most complex frontend system you’ve built (real-time, performance, offline, or audio).