Wajahat Ali Khan

Senior Python Engineer @Cigna Healthcare

Hartford, CT, US

Built scalable backend services with Python, FastAPI, and Celery; processed 1M+ monthly healthcare transactions with 99.99% uptime using load balancing and horizontal scaling.• Built Agentic AI workflows using Python, LangGraph, and LangFlow, enabling multi-agent orchestration for healthcare use cases.• Improved query performance 25% via PostgreSQL and MongoDB tuning, vertical scaling, indexing, and Redis caching.• Refactored monoliths into microservices on AWS (Lambda, EC2, API Gateway, S3), enabling CI/CD and 40% faster release cycles.• Implement API security and reliability using JWT authentication, role-based authorization, rate limiting / throttling, and OpenAPI/Swagger contracts.• Built an AI-powered clinical assistant with LLM cloud deployments and agent workflows to automate documentation, reducing provider effort by 60%.• Integrated third-party SaaS (SendGrid, EHR systems) via REST APIs, JSON payloads, and Postman-validated contracts for compliant, reliable data exchange.

Karachi University

Master's degree MSc

Karachi University

Bachelor's degree BSc (H)