omid rajabalian

Develop and maintain OnePageBooking, a multi-tenant hotel booking platform. Designed resilient Redis caching with Sentinel, read replicas, circuit breakers and SQL Server fallback. Build integrations with 50+ OTAs, meta-search engines and PMS providers. Built a PCI-compliant .NET payment proxy, version-routing services for phased migrations, and tools that detect and remove prohibited card-security data from SQL Server. Technologies include C#, ASP.NET Core, gRPC, Redis, SQL Server, Azure and Docker.

Developed and maintained cruise offers, discount calculation, booking administration and customer-facing reservation workflows for an international online cruise-booking platform. Built backend services and APIs using C#, ASP.NET MVC, ASP.NET Web API, Entity Framework and SQL Server. Improved deployment workflows with Jenkins and Octopus Deploy to enable predictable, repeatable releases across multiple environments.

Managed a team of 4–6 engineers and delivered 15+ e-commerce, pricing, catalogue, payment and order-management features. Designed a modular nopCommerce plugin architecture and built 10+ custom plugins. Tuned SQL queries and introduced Redis caching to improve performance. Architected a Blazor financial-management application that centralised accounting workflows and reporting. Technologies: C#, ASP.NET MVC/Web API, nopCommerce, Blazor, Entity Framework, SQL Server and Azure DevOps.

Designed financial-reporting and enterprise-banking systems used by 100+ organisations and supporting millions of daily data requests. Delivered 14+ enterprise modules and reusable C#/ASP.NET/SQL Server/Entity Framework services. Added Redis caching to reduce database load and MongoDB centralised logging for traceability and failure analysis. Technologies: C#, ASP.NET MVC/Web API, Entity Framework, SQL Server, Redis, MongoDB and Telerik.

Built backend services for a B2B travel-distribution platform and integrated 15+ APIs, including Galileo, Amadeus and Europcar. Developed REST APIs and consistent integration components for providers with different formats and protocols. Improved search performance with asynchronous processing and caching. Created a database-independent Entity Framework layer and MongoDB central logging. Technologies: C#, ASP.NET MVC/Web API, SQL Server, Oracle, MongoDB and Telerik.

Developed ERP modules for inventory, accounting, reporting and operations for software used by 400+ customers. Migrated Windows Forms applications to web-based systems and created customer-specific features and reports. Built a web system for registering, evaluating and managing agricultural products and documents. Maintained production databases and resolved customer issues. Technologies: C#, ASP.NET Web Forms, Entity Framework, SQL Server and Telerik.