Muhammad Haider Ejaz

I’m a Senior Software Engineer focused on building and modernizing high-throughput applications with clean architecture, strong security, and reliable delivery. I like turning complex legacy behavior into maintainable services while keeping teams aligned through collaboration, mentoring, and crisp technical discussions.

At Horizon IT Solutions, I directed the end-to-end migration of a legacy Java application to .NET 8 with a React frontend, improving scalability and performance. I designed and enforced CQRS with a microservices architecture using EF Core and MySQL, set up Azure DevOps CI/CD pipelines, and strengthened identity and access with Azure Active Directory B2C. I also enhanced XUnit unit and integration testing to reduce production defects and improve reliability.

Previously at Devsinc, I worked as a full-stack engineer on healthcare management systems, including EMR features, telehealth, and patient management. I integrated third-party EMR systems (Redox, Athena, Epic, ECW) and optimized database schemas using SQL Server/MySQL for faster queries. With Azure services like Redis Cache and Key Vault, I secured sensitive healthcare data and implemented robust authentication and authorization protocols, including OAuth and Text Control.

Earlier, through Fiverr/Upwork, I delivered 30+ projects spanning web and desktop applications—building from scratch, improving performance, and managing the full delivery lifecycle from requirements to deployment. I’ve deployed cloud solutions on AWS EC2, and I’m consistently motivated by client outcomes, clear communication, and engineering decisions that stand up in production.