● Led the migration of the monolithic ASP.NET MVC projects to microservices using .NET Core 6, Python, Angular 13; boosted performance and scalability while ensuring compliance with healthcare standards such as HIPAA and HL7.● Orchestrated Azure infrastructure setup with Active Directory, Azure Functions, Logic Apps, Kubernetes Services, Azure Service Bus and RabbitMQ.● Engineered a secure EHR system using C#, .NET Core 7, and React 18 featuring patient registration, appointment scheduling, and clinical documentation; boosted data retrieval speed by 30% and enhanced operational efficiency for healthcare providers.● Developed an advanced authorization system leveraging OAuth and Claims package in .NET Core; ensured secure access for 15,000+ users through Azure AD and Azure Key Vault integration.● Designed intricate SQL queries and stored procedures for the Medical Research Data Repository, resulting in a 40% increase in data retrieval speed for researchers and analysts utilizing the database.● Established a DataDog dashboard for resource usage and log monitoring, leading to a 20% decrease in system downtime and annual cost savings of $90,000.● Created a detailed testing architecture utilizing Jasmine/Karma alongside NUnit to ensure robust performance in both Angular apps and C# projects; achieved a measurable 35% improvement in overall code quality over 6 months.● Collaborated with cross-functional teams in an Agile/Scrum environment, participating in daily stand-ups and sprint planning to deliver high-quality software solutions and foster effective communication.● Transitioned CI/CD pipeline from TeamCity to Azure DevOps, and managed code deployment using ADO and Terraform (IaC).● Conducted code reviews and provided mentorship to 3 junior developers via code reviews and pair programming, fostering a collaborative environment and strengthening a team of 7 developers.

● Transformed a legacy monolithic platform into a scalable microservices architecture using C#/ASP.NET Core and Python/Django on AWS, enhancing maintainability and performance.● Engineered a serverless architecture using AWS Lambda, achieving a significant 30% decrease in infrastructure costs while concurrently enhancing flexibility and scalability.● Launched a background job process for SOAP data retrieval and RESTful API conversion; improved the operational efficiency by reducing manual data entry efforts by 20 hours weekly across 5 microservices.● Optimized the AWS ETL pipeline with Lambda triggers and Kinesis Firehose, improving data synchronization from DynamoDB to MySQL and enhancing data availability.● Harnessed MS Dynamics 365 suite to streamline collaboration and communication by leveraging tools like SharePoint, Teams and Outlook for efficient real-time collaboration.

● Constructed RESTful APIs using ASP.NET, MVC, Web API, and SQL Server 2012 for over 10 start-ups and small businesses, resulting in upgraded efficiency and online presence.● Added OAuth 2 authentication on Angular 2 application to communicate with .NET Core API using Azure Active Directory.● Improved database performance by 30% by utilizing ADO.NET to access the PostgreSQL database on the backend server written in C#.● Strengthened web application security and access control using ASP.NET Core Identity, leading to a 30% reduction in security incidents.● Optimized data access layer by using Microsoft Entity Framework to define entities, resulting in a 20% decrease in code complexity.

● Debugged 20k lines of C# codes to fix a software bug that corrupts transactions of 5800 users; increased customer confidence in the company's product by 90%.● Upgraded and delivered maintenance for 20 .NET websites, using ASP.NET MVC, AngularJS, jQuery, Typescript.● Developed WCF Services with SOAP and WSDL, registered via UDDI, to enhance web features; enhanced user satisfaction.● Deployed Git for version control, automated build process with Jenkins, and integrated JIRA for commit monitoring, resulting in a 10% reduction in development time and a notable improvement in code quality.