Muhammad Rafi

Software Engineer (Full-Time)

Sofof Tech · Jeddah, Saudi Arabia (Remote)

2025-11 – Present

• Developed and maintained backend services and RESTful APIs using Node.js, NestJS, and Express.js, serving 50K+ daily active users across scalable multi-module applications. • Designed and managed queue workers and background jobs with Redis, improving system throughput by 30% and reducing server load on heavy tasks. • Optimized SQL queries through indexing, query refactoring, and execution plan analysis, reducing query execution time by 50%+. • Implemented Redis caching strategies across high-traffic endpoints, cutting API response latency by 30%. • Integrated and maintained payment gateways, handling secure transactions, webhooks, and reconciliation. • Developed an automated order delivery system with status tracking, fulfillment triggers, and delivery confirmation workflows. • Built a multi-channel notification system with event-driven dispatching for real-time user alerts. • Configured and integrated Loki & Grafana for centralized application logging and real-time log monitoring across services. • Worked in an Agile/Scrum environment, contributing to backlog grooming and cross-team technical discussions.

Full Stack AI Engineer (Contract)

Machine Minds · Pakistan (Remote)

2025-07 – 2025-10

• Developed a custom AI real estate agent (Node.js, React.js, MongoDB, OpenAI GPT API) that automated lead engagement, qualification, and conversion for real estate agents. • Engineered conversational flows handling inbound property inquiries and buyer questions in real time, significantly cutting manual agent response time. • Implemented lead capture and qualification logic extracting buyer intent, budget, and property preferences into structured MongoDB records. • Built a React.js agent dashboard for reviewing captured leads, conversation history, and qualification status. • Delivered instant, context-aware responses to prospects outside business hours, improving client conversion.