Ragul B

Results-driven .NET Backend Developer with 4 years of experience architecting high-performance RESTful APIs and cloud-native microservices on Microsoft Azure. Deep hands-on expertise in .NET Core 6+, C#, ASP.NET Core, Azure Functions, Azure Service Bus, Event Hub, Cosmos DB, Azure DevOps CI/CD, Docker, and API security (OAuth2/OpenID Connect, Microsoft Entra ID, bearer token generation and validation). Experienced in Azure OpenAI and GenAI integration.

Microsoft

Certified AZ-204 (Azure Developer Associate) and AZ-420 (Cosmos DB Developer). Delivered 25+ production-grade APIs in regulated healthcare environments.

Software Design Engineer at CloudIQ Solutions Pvt Ltd (2022-09 – Present)

Stack: C#,.NET Core 6+, MS SQL, Azure Event Hub, Cosmos DB, Service Bus, Azure DevOps, Docker, Redis, APIM, Entra ID

• Designed and delivered 25+ production-grade RESTful APIs using ASP.NET Core hosted on Azure App Services, covering appointments, medications, payments, and role-based user permissions.
• Architected event-driven microservices using Azure Event Hub and Azure Service Bus (Queues & Topics), enabling zero-downtime asynchronous communication across distributed services.
• Optimised MS SQL Server stored procedures and Entity Framework Core queries, significantly reducing API response times and improving overall system throughput.
• Integrated Azure Cosmos DB (NoSQL) with optimised partition strategies and LINQ queries to achieve sub-100ms read latency at scale.
• Implemented Azure Redis Cache to reduce database load and improve throughput across distributed microservices.
• Built Azure AI Search (Cognitive Search) indexes enabling fast, relevance-ranked full-text search over large healthcare datasets.
• Implemented bearer token generation and API request validation using Microsoft Entra ID (Azure AD) and OAuth2 / OpenID Connect, following OWASP guidelines to strengthen API security.
• Managed end-to-end CI/CD pipelines via Azure DevOps; containerised services using Docker on Open PaaS infrastructure.
• Set up Azure Monitor & Application Insights dashboards, alerting, and live metrics for proactive incident response across distributed services.
• Built secure backend services for structured medical data capture using.NET Core Web API deployed on Azure App Services.
• Integrated Azure API Management (APIM) for centralised API gateway management, throttling, and policy enforcement across microservices.
• Developed high-throughput data access layers using Dapper, LINQ, and Cosmos DB; used Azure Blob Storage for scalable document management.
• Secured secrets and configuration using Azure Key Vault and App Configuration, achieving zero hardcoded credentials across all environments.
• Mentored 4 junior developers through code reviews, pair programming, and knowledge transfer sessions, improving team delivery capacity and code quality.
• Accelerated development velocity by 30%+ through adoption of AI-assisted tooling (GitHub Copilot, Amazon Q).
• Participated actively in Agile Scrum ceremonies: sprint planning, stand-ups, retrospectives, and backlog grooming.

B.E. in Mechanical Engineering – Government College of Engineering, Salem (2018 – 2022)