Headline

Full Stack Developer at Quantum Leap Learning Solutions Pvt Ltd

About

I'm a Software Engineer specializing in AI Agents, Agentic RAG systems, and full-stack product development. Over the past 3+ years, I've built AI-powered products used by thousands of customers, combining React, TypeScript, Node.js, and modern AI technologies to create scalable, production-ready applications. At Questera AI, I led the development of products like Greta, an AI-powered website builder, and Elma, an AI-driven email automation platform. I built core AI systems, scalable backend services, SDKs, RAG-based chatbots, and no-code solutions that helped generate approximately $250K in revenue and acquire 3,000+ paid customers through successful Product Hunt and AppSumo launches. I also developed high-performance SDKs, optimized APIs by up to 40%, integrated third-party platforms including AWS SES, SendGrid, Instantly, Loops, and Attio, and worked directly with customers to solve complex technical challenges. Alongside my professional work, I'm the solo founder of Emadesk, an AI customer support platform. I designed and built the platform end-to-end—from system architecture and UI/UX to backend infrastructure, Agentic RAG pipelines, AI agents, ticketing, knowledge management, deployment, and cloud infrastructure. Emadesk leverages Gemini, semantic search, vector databases, and intelligent tool execution to deliver accurate, context-aware customer support. I'm passionate about building intelligent software that solves real business problems, whether that's AI agents, developer platforms, RAG systems, SaaS products, or scalable full-stack applications. I enjoy taking products from idea to production and continuously exploring what's possible with modern AI. I'm always happy to connect with engineers, founders, and product builders working on AI, developer tools, and innovative SaaS products.

Location

Jhargram

AI stack

aistudio

antigravity

claude code

gemini

langchain

langgraph

Work experience

Full Stack Developer at Quantum Leap Learning Solutions Pvt Ltd, Aug 2026 - Present · 2 mos, Bangalore Urban

Senior AI Engineer - MERN & Agentic AI at Questera, Nov 2025 - Aug 2026 · 10 mos, San Francisco Bay Area, • Led development of Greta, an AI-powered React website builder, owning the core AI chat generation system and shipping major SEO-focused features. Built multiple backend integrations including Supabase and Google Sheets, developed the website analytics pipeline using RabbitMQ, contributed to the marketplace, and worked directly with customers to troubleshoot technical issues and deliver solutions. Helped launch Greta on Product Hunt and AppSumo, contributing to ~$250K in revenue and ~3,000 paid customers.

Software Engineer — MERN & Agentic AI at Questera, Nov 2023 - Oct 2025 · 2 yrs, San Francisco Bay Area, • Lead Developer on Elma, an AI-driven email automation platform where users generate complete email campaign funnels by entering a website URL or prompt, streamlining marketing workflows for SaaS teams. • Built and integrated RAG-based AI chatbot modules into HelpHub, delivering context-aware, document-grounded responses that automated customer support, cut ticket volume, and boosted response efficiency. • Designed and maintained scalable ReactJS and TypeScript components in the @questlabs/reactsdk library, ensuring UI consistency, reusability, and improved developer productivity across products. • Architected and deployed high-performance Node.js, Express, and MongoDB backend systems in the @questlabs/core SDK, achieving a 40% reduction in API response times through advanced performance optimization. • Built and released @questlabs/nocode-sdk, converting core React components into configurable no-code HTML embeds, enabling non-developers to render and customize UI directly in standard HTML. • Delivered SaaSGPT, an AI-based tool for generating SEO-friendly SaaS landing pages with optimized content and markup, enhancing organic search visibility and web traffic. • Integrated third-party APIs and tools including Instantly, Loops, AWS SES, SendGrid, and Attio, streamlining email automation, lead management, and CRM workflows.

Software Engineer Intern — MERN Stack at Questera, May 2023 - Oct 2023 · 6 mos, San Francisco Bay Area

Education

Full stack web developer, Masai

Public links

github: https://github.com/soumitra-dey