Senior .NET Full Stack Developer

Kousalyaa Senthilvel

Email:*******************@*****.***

Phone: 815-***-****

LinkedIn: https://www.linkedin.com/in/kousalyaa-senthil-/

.Net Full Stack Developer

Professional Summary

Over 6 years of professional experience in .NET development, working across all phases of the Software Development Life Cycle (SDLC) including planning, analysis, design, development, testing, and maintenance of web-based and N-tier applications across domains such as Finance, Insurance, Healthcare, and IT.

• Strong experience in Microsoft .NET technologies, building web and client-server applications using C#, ASP.NET Web Forms, ASP.NET MVC, and .NET Core with solid implementation of N-tier architecture.

• Hands-on experience in developing applications using .NET Framework (4.5/4.0/3.5) and .NET Core (6.0/3.1), along with Visual Studio and modern development tools.

• Proficient in frontend development using HTML5, CSS3, JavaScript, jQuery, and Bootstrap, with experience in creating responsive and user-friendly interfaces.

• Strong understanding of Object-Oriented Programming (OOP) concepts including inheritance, encapsulation, abstraction, and polymorphism.

• Experience implementing MVC design pattern, developing scalable and maintainable web applications.

• Worked on ASP.NET Web Forms, MVC applications, Web APIs, and RESTful services using HTTP methods (GET, POST, PUT, DELETE) with Entity Framework (Code First approach).

• Experience in LINQ (to Objects, to SQL) and ADO.NET for efficient data access and manipulation.

• Good knowledge of WCF services, SOAP, and REST-based service integration.

• Implemented security features including authentication and authorization using role-based access and secure web application practices.

• Hands-on experience with Dependency Injection (DI) and Inversion of Control (IoC) to build loosely coupled and testable applications.

• Experience in exception handling, debugging, and application performance tuning.

• Developed applications using layered architecture including Data Access Layer, Business Logic Layer, and UI Layer.

• Experience in SQL Server (2012/2016) including writing stored procedures, functions, triggers, and performance tuning queries.

• Worked with SSIS and SSRS for data integration and reporting solutions.

• Familiar with version control systems like Git and TFS, including branching, merging, and build/release processes.

• Experience working in Agile (Scrum) and Waterfall methodologies, with exposure to Test-Driven Development (TDD) practices.

• Strong experience in building Single Page Applications (SPAs) using Angular (latest versions) with TypeScript, RxJS, and component-based architecture.

• Experience creating reusable components, services, and implementing routing, state management, and API integrations in Angular applications.

• Working knowledge of React.js, including building reusable components, managing state using Hooks and Redux, and integrating REST APIs.

• Experience with unit and integration testing using tools like Jest and testing frameworks for frontend and backend applications.

• Hands-on experience with cloud platforms, primarily Microsoft Azure (App Services, Azure SQL, Functions, Storage, DevOps) and familiarity with AWS services such as EC2, S3, Lambda, and RDS.

Technical Skills:

Operating Systems: Windows 2010, 2007 R2/2008/2003, XP, Windows 7, Vista.

Programming Languages: C++, C#.Net (8/4.0/3.5/3.0), VB.NET (10.0/9.0/8.0), HTML, T-SQL, PL/SQL

Web Technologies: Dot Net Core 8/6/3, Web API, ASP.NET (4.5/4.0/3.5/3.0/2.0), ASP.NET MVC,

Silverlight4.0/3.0, Ajax, JavaScript, jQuery, Angular, React JS.

IDE Tools: Visual Studio 2019/2015/2013/2010/2008, SQL Server Management Studio 2014/2008.

.Net Frameworks: .Net Framework 4.5/4.0/3.5/3.0/2.0, Microservices.

Databases: MSSQL SERVER 2019/2014/2012/2008/2005, MS Access 2010/2007/2003, Oracle 11g/10g/9i/8i

Reporting Tool: SQL Server Reporting Services (SSRS 2014/2012/2008/2005), Crystal Reports

(2014/2012/9/8.5/8)

Modeling Tools: UML, MS Visio 2010/2007

Version Control Tools: Visual SourceSafe, Subversion, Team Foundation Server (2015,2013,10,08), GIT

Middleware: WCF, ADO.NET 4.0/3.5/3.0, Web API, Web Services, Entity Framework 6.0/5.0

Servers: Windows Server 2008/2003/NT, Microsoft IIS (7.0/6.0/5.0/4.0)

Other Utilities: Nant, gacutil, Ants profiler, FxCop, Resharper0(8.1), Style Cop, Nugget packages. Splunk,

Dynatrace, VS performance Analyzer, JIRA

Professional Experience

Sr.Net Developer

Florida Dept. Of children and families(Florida) - Tallahassee, Florida. Jan 2025 to till

Responsibilities:

●Developed and maintained web applications using .NET 8, C#, and ASP.NET Web API, supporting mission-critical public service systems.

●Contributed to the Disaster Response System, enabling volunteer registration, profile management, shift assignment, check-in/check-out, and work hours tracking during emergency situations.

●Designed and implemented volunteer scheduling and real-time status tracking features, improving coordination and operational efficiency during disaster response.

●Implemented functionality to track supply inventory across multiple sites and enabled inter-site supply transfers, ensuring effective resource management.

●Developed automated email notification systems to inform volunteers about shift schedules and site details, and to notify site leads about supply transfers.

●Built features to support bulk upload of volunteer data, significantly reducing manual data entry and onboarding time.

●Developed RESTful APIs to manage volunteer data, scheduling, and activity tracking.

●Created and enhanced user interface components using Telerik UI, improving usability and responsiveness.

●Worked on a Facility Management system, enabling efficient space allocation and occupancy management, including assigning staff to workspaces.

●Designed and implemented modules for occupant tracking and space utilization, providing better operational visibility.

●Developed the SAMH Licensure application, allowing users to register, submit details, manage employees, and apply for licenses online.

●Integrated Okta authentication to provide secure login and role-based access control for users and employees.

●Implemented document upload functionality using Azure Blob Storage, ensuring secure and scalable file handling.

●Built workflows to validate uploaded documents (pass/fail checks) and route them to downstream systems.

●Integrated with OnBase document management system for efficient storage, retrieval, and management of documents.

●Generated DocPop URLs to enable secure access to uploaded and processed documents.

●Applied secure coding practices and validation techniques to maintain data integrity and meet compliance requirements.

●Collaborated in an Agile environment, actively participating in sprint planning, development, testing, and deployment.

Environment: .NET 8, C#, ASP.NET Web API, Telerik UI, Azure Blob Storage, REST APIs, SQL Server, Okta, Agile

.NET Developer

Actimus Bio -Remote Jan 2022 to Dec 2024

Responsibilities:

●Designed, developed, and maintained microservices-based applications using .NET Core 8, C#, and Web API, enabling scalable and loosely coupled healthcare systems.

●Built and enhanced RESTful APIs for CRUD operations using Entity Framework (Code First), ensuring efficient communication between frontend and backend systems.

●Implemented layered architecture (DAL, BLL, UI) with reusable core libraries, utilities, and helper components to improve maintainability and scalability.

●Optimized SQL Server databases, including schema design, stored procedures, triggers, and indexing strategies, significantly improving query performance and data retrieval.

●Developed and integrated Angular (v14/15) applications using TypeScript, RxJS, HTML5, CSS3, and Bootstrap to deliver responsive and user-friendly interfaces.

●Implemented state management and reactive programming using RxJS Observables for efficient data flow between APIs and UI components.

●Applied Dependency Injection (DI) and Inversion of Control (IoC) to build modular, testable, and maintainable application components.

●Configured security, routing, caching, filters, and middleware in Web API and MVC applications, adhering to OWASP security standards.

●Developed and executed unit and integration tests using Jest in a Test-Driven Development (TDD) environment to ensure code quality and reliability.

●Containerized microservices using Docker and deployed them to Kubernetes (AKS), ensuring scalability and consistent deployment across environments.

●Built and managed CI/CD pipelines using Azure DevOps, enabling automated builds, testing, and seamless deployments.

●Utilized Azure services including App Service, Azure SQL Database, Cosmos DB, Service Bus, Event Hub, Blob Storage, and Key Vault for building secure and scalable cloud solutions.

●Collaborated in an Agile (Scrum) environment, participating in sprint planning, code reviews, and daily stand-ups to deliver high-quality features on schedule.

●Worked with Azure Boards and GitLab for task tracking, version control, and efficient team collaboration.

Environment:

.NET Core 8, C#, Web API, Microservices, Entity Framework, SQL Server, Angular 14/15, TypeScript, RxJS, Azure (App Services, Cosmos DB, Service Bus), Docker, Kubernetes (AKS), Azure DevOps, GitLab, Apache Kafka, Agile

.Net Developer

Illumina infotech- Banglore,IND Oct 2019 to Dec 2021

Responsibilities:

●Developed enterprise-grade web applications using .NET Core, C#, and RESTful APIs, supporting real-time insurance management systems.

●Designed and implemented scalable and secure APIs, enabling seamless integration with internal and third-party services.

●Architected and developed modular, maintainable applications using Dependency Injection (DI) and layered design principles.

●Built and optimized data access layers using Entity Framework Core and SQL Server, improving performance for large-scale datasets.

●Implemented role-based authentication and authorization using .NET Core Identity and Azure Active Directory (AAD) to secure sensitive data.

●Improved application performance by implementing caching strategies, lazy loading, and API optimizations, reducing response times.

●Developed and integrated Angular and Blazor components to deliver dynamic, responsive user interfaces for policy management.

●Created reusable UI components and services, improving code reusability and maintainability across the application.

●Implemented client-side and server-side validation, ensuring data integrity and compliance with business rules.

●Designed and executed unit and integration tests using tools like Jasmine, Karma, and bUnit to maintain high code quality.

●Built and maintained CI/CD pipelines using Azure DevOps, automating build, test, and deployment processes.

●Containerized applications using Docker and supported deployments in cloud environments.

●Configured logging and monitoring using Serilog and Azure Application Insights, enabling proactive issue detection and troubleshooting.

●Collaborated with cross-functional teams to gather requirements, perform code reviews, and ensure alignment with business and compliance standards.

●Tuned SQL queries and database performance, improving data retrieval efficiency and overall system responsiveness.

●Supported production releases, troubleshooting critical issues and ensuring high system

●Deployed and managed applications using Azure App Service, ensuring scalability and high availability.

●Configured Azure API Management to secure and manage REST APIs.

●Implemented Azure Key Vault for secure management of secrets, keys, and certificates.

●Used Azure Blob Storage for handling unstructured data such as documents and images.

●Integrated Azure Functions for serverless processing and event-driven workflows.

●Leveraged Azure Logic Apps to automate business workflows and system integrations.

●Utilized Azure SQL Database for secure and scalable data storage.

Environment: .NET Core, C#, Web API, Entity Framework Core, SQL Server, Angular, Blazor, Azure (App Service, API Management, AAD, Functions, Key Vault), Docker, Azure DevOps, CI/CD, REST APIs, Microservices, SSRS, Git

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