Ubedurrehman Nizamuddin Khan

Architected a multi-tenant SaaS ecosystem, designing a Modular Monolith in Node.js/Express that orchestrates three decoupled frontends (React/Vite) via a centralised API. Engineered a secure schema using PostgreSQL with Row Level Security (RLS) and RBAC middleware to enforce strict data isolation between Landlords, Tenants, and Admins. Built a backend aggregation layer with Redis caching to unify fragmented APIs, reducing latency and ensuring high throughput for bookings using pessimistic locking to eliminate race conditions. Refactored state management to Zustand, enabling instant property filtering; owned the deployment lifecycle by containerizing services with Docker.

Architected an in-house ERP using React and Node.js, designing a scalable schema with 70+ SQL tables and 30+ views to automate core business workflows. Engineered interactive dashboards with advanced table filtering, hosting the system on-premise.

Led 20 interns to deliver 3 production sites, establishing CI/CD pipelines and strict code reviews.

Spearheaded frontend development for e-commerce platforms (Lofaz.com), leading a team of two interns to deliver responsive, high-fidelity user interfaces. Collaborated on backend architecture by diagnosing performance bottlenecks and implementing advanced SQL query optimization and indexing strategies, which successfully reduced system latency by 20% under peak load. Streamlined workflows by managing AWS infrastructure and establishing strict Git version control standards across the team.