Saquib Shahid

Backend Developer with 2.9+ years of production experience building scalable, event-driven systems using Node.js, TypeScript, Kafka, and Redis. Skilled in designing partitioned PostgreSQL architectures (range/hash/list), implementing Kafka pipelines with idempotent message handling, and managing background jobs via BullMQ with retry logic and DLQs. Experienced in distributed systems, real-time APIs, observability, and CI/CD pipelines. Solved 900+ DSA problems (500+ LeetCode, 400+ GFG).

Backend Developer at Edwid Technologies Pvt Ltd (2023-11 – Present)

• Architected Moina.ai — an AI-driven WhatsApp Business platform using Node.js, TypeScript, and PostgreSQL (pgvector), enabling automated RAG-based chatbot responses from user-uploaded documents (PDF, Excel) and scraped website data.
• Decoupled intensive data processing by implementing an event-driven microservice architecture using Kafka — designing producers/consumers with idempotent message handling and schema evolution to shift heavy text extraction and vector embedding generation off the main API thread.
• Integrated Meta's Cloud API for WhatsApp Business, building systems for bulk campaign broadcasting and a multi-agent shared inbox with real-time updates via Socket.io.
• Architected Edwid E-commerce Template using Node.js, Express.js, and TypeScript — decoupled into scalable microservices with BullMQ-powered background job queues handling retries, concurrency, and dead-letter queues (DLQs) for async order and notification workflows.
• Implemented Redis-based distributed caching for catalog discovery and session management, optimizing p95 latency and connection pool utilization across concurrent checkout flows.
• Applied SOLID principles and design patterns (Strategy, Singleton) to dynamically swap third-party integrations (Payment Gateways, OTP providers, Logistics APIs) based on tenant configuration.

B.Tech in Computer Science & Engineering – Gargi Memorial Institute of Technology (2020 – 2024)