Fawwad A.

I’m a senior backend engineer who builds secure, reliable APIs and services in .NET and Node.js, and integrates AI (OpenAI, Anthropic, Gemini) into real business applications. I’ve spent 8+ years on banking and enterprise systems, where downtime, data errors and security gaps aren’t an option. What I can do for you • Design and build backend services and REST/gRPC APIs in .NET Core (C#) or Node.js (TypeScript, Express) • Add LLM features to your product: document processing, extraction, assistants and automation, with access control, usage limits and cost tracking built in • Move a monolith to microservices, or modernize legacy .NET code without breaking production • Connect your system to third parties: core banking, identity verification, storage, e-sign and other APIs • Find and fix performance, security and reliability problems in production Proof • Banking onboarding and financing workflow: identity verification (NADRA VERISYS), core-banking (T24) checks, compliance screening and multi-stage approval. Cut manual processing and paperwork by 75%. • .NET microservices for banking clients at Hyperdata Computing, using Kafka, gRPC, Azure and ElasticSearch monitoring. I lead the web and mobile teams there. Stack • .NET Core, ASP.NET Core Web API, C#, Entity Framework Core • Node.js, TypeScript, Express • AI: OpenAI, Anthropic and Gemini APIs, multi-provider routing, token and cost tracking • Kafka, gRPC, SignalR, REST • SQL Server, MongoDB, Supabase, ElasticSearch • Azure (App Services, Blob Storage, SignalR), AWS S3, Docker, Jenkins, CI/CD • OAuth 2.0, JWT, role-based access control I communicate clearly, write code your team can maintain, and flag risks early. Send me a short description of your project and I’ll reply with how I’d approach it.