Senior Software Engineer

Led modernization of a HIPAA-compliant Membership Management System by transitioning legacy technologies to cloud-native architecture using C#, .NET Core 6/8, Angular, and TypeScript. Incorporated HL7 and FHIR standards for secure healthcare data exchange in Agile environment. Redesigned legacy .NET MVC healthcare monolith into service-oriented architecture, refactoring .NET Framework apps into .NET Core, scalable on Azure App Services and Azure Functions. Designed and optimized microservices with .NET Core, Entity Framework Core, Azure Functions, and Azure Kubernetes Service. Developed RESTful and GraphQL APIs integrated with Apollo Federation and Swagger. Integrated Twilio APIs for real-time SMS alerts and notifications. Worked with Azure Service Bus and Event Hub for asynchronous messaging and real-time streaming. Designed secure payment microservices with Stripe and PayPal APIs ensuring PCI compliance. Optimized database performance on SQL Server and Oracle with schema refactoring, indexing, and Redis caching. Built and maintained CI/CD pipelines in Azure DevOps using Azure CLI and PowerShell. Developed mobile-first user interfaces in Angular with NgRx and Angular Material. Implemented secure coding practices with SOLID principles, RBAC, SSO using OAuth 2.0, OpenID Connect, and Azure AD. Conducted performance analysis, capacity planning, and troubleshooting for distributed systems on Azure. Integrated Cosmos DB, Azure SQL, and Data Lake Store for data storage. Built unit and integration tests with xUnit and Jasmine. Led Agile teams of 8 developers, participated in SCRUM meetings, mentored juniors, and collaborated with cross-functional teams.

Designed and delivered web applications using .NET Core MVC and React.js with component-based architecture. Utilized Entity Framework Core with SQL Server for data models and optimized queries. Implemented clean architecture principles for modular, maintainable, and testable code. Developed and consumed RESTful APIs. Integrated RabbitMQ with ASP.NET Core backend for real-time messaging and transaction processing. Incorporated SignalR for live notifications and updates. Built responsive user interfaces using Vue.js and React integrated with .NET Core backend. Leveraged Next.js and Nuxt.js for server-side rendering and static site generation. Configured in-memory caching and data validation. Established CI/CD pipelines in Azure DevOps. Built distributed authorization system with C#, ASP.NET Core, and OPA; improved performance using Redis caching and JWT authentication. Integrated AWS S3, RDS, and DynamoDB for scalable storage and databases. Implemented AWS Lambda for serverless Python microservices. Developed RESTful and GraphQL APIs using C# and ASP.NET Core applying CQRS, Mediator, and Repository patterns with Cosmos DB and MariaDB. Deployed cloud-native solutions on Azure and AWS, reducing infrastructure costs by 25%.

Studentski trg 1, Belgrade, Serbia