Senior .NET Full-Stack Developer for Healthcare & Finance

PAUL WILLIAMS DAGGUMALLI

**************@*****.*** +1-405*******

LinkedIn: https://www.linkedin.com/in/paul-williamsdaggumalli/

SUMMARY

Full-Stack .NET Developer with 4.5+ years of experience delivering secure, scalable, and high-performance applications across Healthcare, Banking, and Insurance domains. Skilled in building modern web solutions using .NET Core, C#, Web API, SQL Server, Angular, and React, and architecting cloud-ready systems on Azure and AWS. Strong expertise in API engineering, microservices patterns, enterprise authentication (OAuth2.0, JWT, Azure AD), database optimization, and UI engineering. Proven ability to accelerate delivery through DevOps practices, CI/CD pipelines, Docker, and test automation. Adept at collaborating in Agile teams, driving innovation, and ensuring quality and compliance in regulated environments.

SKILLS

Backend & Frameworks: C#, .NET Core/ASP.NET Core (3.1–8), Web API, MVC, Microservices, EF Core, Dapper, LINQ

Frontend: Angular (8–17), React, TypeScript, JavaScript (ES6+), HTML5, CSS3, Bootstrap

Cloud Platforms: Azure: App Services, Functions, Service Bus, Azure SQL, Key Vault, Blob Storage, App Insights

AWS: EC2, Lambda, RDS (SQL Server/PostgreSQL), S3, SQS/SNS, CloudWatch

Databases: SQL Server, PostgreSQL, MySQL, Azure SQL, Stored Procedures, Indexing, Query Optimization

DevOps & Tools: Azure DevOps, GitHub Actions, Jenkins, AWS CodePipeline, Docker, Kubernetes (AKS/EKS), Git, Jira

Security & Identity: OAuth2.0, JWT Auth, Azure AD, Role-Based Access, API Security, Secrets Management

Messaging & Integrations: Azure Service Bus, AWS SQS/SNS, REST APIs, Webhooks

Testing & Monitoring: xUnit, NUnit, Postman, Swagger/OpenAPI, Application Insights, CloudWatch, Serilog, Log4Net

Data & ETL: SSIS, SQL, CSV/XML/JSON processing, File Pipelines

EXPERIENCE

Cardinal Health Full Stack .NET Developer June 2025 – present

Developed patient portal and EHR features using ASP.NET Core 6, C #, React, and Material UI, improving user workflow efficiency by 28%.

Maintained VB.NET legacy components and migrated key modules to .NET Core, reducing technical debt and operational issues.

Built HIPAA-compliant REST APIs integrated with Azure SQL and EF Core, improving API throughput by 32%.

Configured Azure AD B2C with OAuth and JWT for secure authentication and patient identity management.

Integrated FHIR and HL7 standards for patient data exchange with third-party clinical systems.

Developed React forms with validation and state management, reducing manual entry errors by 22%.

Automated document intake using Azure Functions and Blob Storage, saving medical staff processing time by 40%.

Implemented asynchronous communication using Azure Service Bus and Event Grid aligned to the distributed architecture.

Performed API and UI testing using xUnit, reducing production defects by 18%.

Participated in Agile ceremonies with product teams and clinicians to ensure accurate requirement delivery and compliance readiness.

Accenture Full Stack .NET Developer Oct 2021 – July 2024

Delivered digital banking modules using ASP.NET Core 7, C #, Web API, and Angular, improving onboarding experience by 30%.

Built secure REST APIs with Entity Framework Core and SQL Server, reducing average API response time by 35%.

Modernized legacy WCF services to REST microservices, increasing service stability and reducing maintenance efforts by 20%.

Developed reusable Angular UI components with TypeScript and Bootstrap, improving UI consistency and reducing development rework by 25%.

Enforced secure authentication and JWT-based authorization aligned with banking compliance policies, strengthening endpoint protection.

Optimized stored procedures, indexing, and database tuning for high transaction volume, improving data retrieval speed by 40%.

Integrated Azure Service Bus to handle asynchronous event-driven communication across payment and customer modules.

Automated CI CD pipelines using Azure DevOps and Git, reducing deployment cycles by 55%.

Implemented centralized logging with Serilog and Azure Application Insights, improving issue traceability and reducing debugging time by 30%.

Collaborated with business teams and QA in Agile sprints, achieving consistent 95% sprint delivery accuracy.

HDFC Life Insurance Software Engineer Jul 2020- Sep 2021

Developed insurance policy and claims features using ASP.NET Core MVC and C #, improving processing accuracy by 25%.

Built responsive interfaces using Angular, HTML5, CSS3, Bootstrap, and jQuery, improving user experience by 20%.

Automated ETL workflows and data imports using SQL Server and SSIS, reducing manual data handling by 40%.

Implemented secure role-based access and token-based authentication aligned to insurance regulatory standards.

Integrated AWS S3 for document storage and used AWS Lambda for automated policy document processing.

Optimized stored procedures and indexing to improve report generation speed by 35%.

Supported migration of legacy .NET Framework codebase to .NET Core, improving scalability and maintainability.

Automated builds and deployments using Jenkins and Git, improving deployment reliability by 50%.

Worked with analysts and QA teams for UAT validation, improving requirement clarity and reducing change rework.

EDUCATION

Oklahoma Christian University August 2024 – December 2025

Master of Science in Computer Science Edmond, OK.

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