Khalid

Software Engineer

Built and maintain REST APIs with .NET Core, Entity Framework Core, C# and Node.js/Express for an EPC application and an Inventory Management System.. Implemented a multi-tenant database design with secure per-client data isolation inside a single system.. Shipped SiteCaptain (Kotlin, Jetpack Compose) to Google Play and am building OperOn Mobile in React Native.. Validated OperOn Web APIs in Postman (CRUD flows, schema migrations) and set up shareable environments and collections so teammates can test via invite link.. Applied system-design principles, optimised performance and resolved complex technical issues to keep services stable.