SAIFADAWLA ABBAS

I've built backend and full-stack systems at Kayan Healthcare Technologies, Fratello Software House, and XNGAGE, supporting healthcare, insurance, B2B e-commerce, and enterprise workflows.

At Kayan Healthcare Technologies, I developed and maintained 100+ Node.js API endpoints with PostgreSQL and built a claims-validation engine for ICD, CPT, and HCPCS standards that reduced manual reviews by 80%. I also automated insurance eligibility workflows, cutting verification time by 70%.

At Fratello Software House, I engineered 70+ C# and ASP.NET Core APIs, designed repository-based data-access layers with Entity Framework Core, containerized applications with Docker, and created reusable class libraries including a modular payment component.

My projects include REST APIs built with Clean Architecture, CQRS, MediatR, JWT-based authorization, testing, CI/CD, Azure deployment, Stripe Checkout, Redis, and Elasticsearch. I enjoy building secure, database-driven applications with maintainable architecture and reliable delivery pipelines.