Sridhar Sahu

• Built an in-browser Three.js parametric configurator covering eight product types, generating both interactive geometry and the sheet cutlists the factory manufactures from.
• Designed a dual rule engine: versioned JSON formulas interpreted in both TypeScript and Java, keeping 3D geometry, cutlists, hardware and price consistent across the browser and the server.
• Made the Spring Boot calculate and refresh-costing endpoints the source of truth for saved quotations, with payload sanitisation and price-drift guards preventing stale client geometry reaching a commercial document.
• Shipped the customer journey end to end: OTP auth, floor-plan upload with AI room detection, a five-step quote builder, Cashfree payments, project timeline and warranty claims.
• Built internal ERP surfaces for leads, quotations, product catalog with S3 model upload, GST ledger, promo codes, role-based access and a twelve-stage project scheduler.
• Ran polyglot persistence on Spring Boot 3 and Java 17: MySQL for CRM and catalog, MongoDB for quotations and builder rules, Hazelcast for caching and clustered sessions.
• Integrated Gemini and Replicate for floor-plan prediction and room renders, with credit metering and presigned-URL caching for S3 model assets.

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• Built a lead management system with timeline views, callback scheduling and activity logs, cutting missed follow-ups by 60% and admin time by 45%.
• Unified Voice, WhatsApp and WebSocket chat into a single panel so a conversation never restarted when it moved between channels.
• Raised payment collection 60% through in-app follow-up and automated reminders.
• Brought page load under 2 seconds from 5 via code-splitting and lazy-loading.