Need a complex feature, a high-performance backend, or an API integration built for your existing web app or SaaS? In this focused 4 to 5-day sprint, I will architect, develop, and deliver a production-ready feature with clean, scalable code. 📦 Examples of what I build in this sprint: • Custom AI Integration: In-app conversational AI assistants and LLM pipelines (Google Gemini, OpenAI). • Real-Time Engine: Bi-directional WebSockets integration (live alerts, ordering sync, or real-time status updates). • Database Architecture & Optimization: PostgreSQL or MongoDB schema overhaul, indexing, and high-performance queries. • Secure Authentication & Multi-Tenancy: Custom role-based access control (RBAC), JWT auth, and permission middleware. • Payment Gateways & Subscriptions: Stripe checkout, recurring billing lifecycles, and webhook handlers. 🤝 What You Receive:

Production-ready, modular code following clean architecture patterns.

Clear environment documentation (.env.example) and setup instructions.

Recorded Loom video walkthrough demonstrating the working implementation.

Clean Git branch handover and staging deployment support. Turnaround: 4–5 business days. 100% Asynchronous delivery with zero meeting friction. 🔗 Live Staging Demo (Fintech & Ledger Engine): https://inversync.onrender.com