Esha Kar
I’m Esha Kar, a Senior Full Stack AI-native developer based in Kolkata, where I own end-to-end product delivery—from architecture and hosting to domains, CDNs, and real-time AI integrations.
About
I’m Esha Kar, a Senior Full Stack AI-native developer based in Kolkata, where I own end-to-end product delivery—from architecture and hosting to domains, CDNs, and real-time AI integrations. I started with a BA in English, then built my technical foundation by learning independently while completing my BCA, and that journey taught me how to learn fast and go deep.
Across ed-tech, OTT, and fintech, I’ve delivered large-scale products for 1M+ users, including subscription and KYC payout flows, live tutoring and classroom experiences, and robust payment handling. I also love building real-time communication and AI evaluation experiences—using SDKs like LiveKit and Amazon Chime—while improving performance through smart caching, reliable API design, and production-focused debugging.
- 1 year's experience
- Joined July 2025
Skills· 17
Languages
- EnglishAdvanced
- HindiAdvanced
- BengaliFluent
Industry experience
- Software & Internet
- Professional Services
- Healthcare
- Education
- Media & Entertainment
- Financial Services
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Work experience· 9 roles
Owned the Haircraft e-commerce platform end-to-end as the sole full-stack owner, covering architecture, hosting, domain/VPS, and Cloudflare CDN. Built the storefront using Next.js and an admin panel using Angular, with a Nest.js API layer powering core functionality. Integrated AI capabilities across the platform, handling both product experience and operational/admin workflows.
Designed and implemented scalable APIs and backend logic in Next.js, supporting real-time data operations. Optimized data fetching and state management using TanStack Query, improving performance and reducing redundant API calls. Developed modular and maintainable business logic to contribute to scalable application architecture.
Integrated Razorpay end-to-end for commerce, including order creation, payment capture, webhook handling, and refund processing to ensure reliable transaction flows.
Education
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