.NET RESTful API Development

@akshaybhagwat76

***.NET6 EXPERT*** Hi! I read that you need a suite of RESTful APIs in .NET 6+, covering JWT-based authentication, full CRUD on your primary data models, and integration with two third-party JSON vendors, with Swagger/OpenAPI documentation throughout. I have 8+ years of real-time IT experience with .NET Core and C#, building clean, well-structured backend services with Entity Framework and Dapper across multi-tenant SaaS, healthcare, and e-commerce platforms — this is directly my core stack, so I can move fast here. I'll set up JWT-based authentication, build out CRUD endpoints matching your data models, and handle the third-party integrations cleanly with proper error handling and response mapping. I'll deliver a Git repo with clear commit history, an up-to-date Swagger spec covering every endpoint, a Postman collection for testing, and a concise README covering local setup, environment variables, and build/run commands — keeping the ≤200ms average response benchmark in mind throughout. Once you share the database schema and integration endpoints, I can move straight into implementation. Let's connect — I can start right away. Akshay B

@vishal1145

Your third-party integrations will fail in production if those vendor APIs enforce rate limits or return inconsistent JSON schemas without a retry-and-validation layer. This will cause silent data corruption or timeout cascades that break your entire release. Quick questions - are these vendor endpoints paginated, and do they support webhooks for real-time updates? And what's your expected request volume per minute once this goes live? Here is the architectural approach: - .NET 6 + DAPPER: Build a lightweight repository pattern with Dapper for sub-50ms query performance, avoiding EF overhead for read-heavy operations. - JWT AUTHENTICATION: Implement token refresh logic with sliding expiration and role-based claims to prevent session hijacking and support granular permissions. - THIRD-PARTY RESILIENCE: Wrap vendor calls in Polly retry policies with circuit breakers, plus schema validation using FluentValidation to catch breaking changes before they hit your database. I've built similar API suites for 4 SaaS platforms that now handle 10M+ requests daily without downtime. Let's schedule a 15-minute call to align on your performance benchmarks and integration error-handling strategy before I draft the technical spec.

@nandasunny449

Dear Hiring Manager, I am excited to apply for your project. With 8.6+ years of experience in .NET Full Stack development, I have successfully built and maintained enterprise web applications, RESTful APIs, and scalable business solutions for clients across various industries. My expertise includes: Languages: C# Frameworks: ASP.NET Web Forms, ASP.NET MVC, .NET Core, WinForms, WPF, AngularJS, Angular 18 Frontend: React, JavaScript, jQuery, HTML5, CSS3, Bootstrap, AJAX, Figma to HTML/CSS APIs: REST APIs, Web API, WCF, Windows Services, Third-Party APIs, Facebook API Databases: Microsoft SQL Server, MySQL Payment Integrations: Stripe, WePay Tools: Telerik, DevExpress, Git, Bitbucket, Azure DevOps, SourceTree Testing: Selenium I am a reliable developer with strong communication skills and a proactive approach to problem-solving. Whether you need a new application, enhancements to an existing system, API integrations, or ongoing maintenance, I am confident I can deliver results that exceed your expectations. I am available to start immediately and would welcome the opportunity to discuss your project in more detail. Thank you for considering my application. I look forward to hearing from you. Best Regards, Sunny

@agrasth

Dear Sir, I have more than 30 Years experience in developing applications in .NET, SQL Server, .NET Core, Azure and allied technologies and have developed many across different verticals. I also have significant experience in developing applications in Angular, MySQL, NodeJS API and allied technologies. I am keen to take up your project. You may please send us more details about the project. Thanking you and best regards Sanjay Kaul

@santhi75

Hi, I’d be glad to build the RESTful API layer for your next release. With 20+ years of .NET experience and strong hands-on expertise in C#, ASP.NET Core, Web API, Entity Framework, SQL Server, authentication, and third-party integrations, I can deliver a clean and maintainable backend without unnecessary UI complexity. I will implement secure JWT-based authentication, complete CRUD APIs, efficient data access using EF Core or Dapper, and reliable integrations with the two JSON-based third-party vendors. APIs will follow clean architecture and REST principles, with proper validation, error handling, logging, and performance considerations. I will provide a well-documented Swagger/OpenAPI specification, organized Git repository with meaningful commits, README covering setup and configuration, and a Postman collection for testing. I’ll also validate the APIs against the agreed payloads and performance requirements before delivery. I have extensive experience designing business APIs and integration-heavy applications, so I can work independently from your database schema and endpoint specifications while keeping the solution extensible for future integrations. I can start quickly and provide a clear milestone-based timeline after reviewing the schema and API requirements. Best regards, Santhi

@BasharatHussaini

Hi, I’m an experienced **.NET/C# backend developer** with strong experience building RESTful APIs using **ASP.NET Core, Entity Framework Core, Dapper, SQL Server, JWT authentication, and Swagger/OpenAPI**. I can develop clean, scalable APIs covering authentication, CRUD operations, database integration, and third-party JSON API integrations. I’ll also provide a well-structured Git repository, complete Swagger documentation, README, and Postman/RestClient collection. I focus on clean architecture, secure APIs, proper validation, error handling, and performance. I’m ready to review your schema and endpoints and provide a realistic timeline for delivery. Best regards, Basharat

@vinod150987

Hi, I’m a seasoned .NET Backend Developer with 15+ years of experience designing, developing, and delivering robust, scalable, and secure enterprise applications and RESTful APIs. Your requirement for a backend-focused API developer aligns very well with my expertise. I specialize in building clean, maintainable C#/.NET APIs, with strong experience across modern .NET versions, Entity Framework Core, Dapper, SQL Server, and Swagger/OpenAPI. With my extensive experience, I can also help identify potential architectural or performance issues early and recommend practical solutions rather than simply implementing the requirements.

@spiderSoft007

Hello, I have over 9 years of experience in .NET development and specialize in building secure, scalable, and high-performance REST APIs using **.NET 6/7/8**, **ASP.NET Core**, **C#**, **Dapper/Entity Framework**, **JWT Authentication**, and **Swagger/OpenAPI**. Your requirements align well with my expertise. I can develop a clean, well-structured backend that includes: * Secure JWT-based authentication and authorization * Complete CRUD APIs following REST best practices * Integration with your third-party JSON APIs * Dapper or Entity Framework (based on your preference) * Comprehensive Swagger/OpenAPI documentation * Well-organized source code with meaningful Git commit history * Postman collection for easy API testing * Clear README with setup instructions, environment variables, and build/run steps I focus on writing maintainable, production-ready code with proper error handling, validation, logging, and clean architecture. Performance is also a priority, and I'll ensure the APIs are optimized to meet your target response time of **≤200 ms** in a local environment with sample data wherever practical. Once you provide the database schema and integration documentation, I'll review everything and share a detailed implementation plan with an accurate timeline before development begins. I am available to start immediately and will maintain regular communication throughout the project. I look forward to discussing your requirements. Best regards, Nagendra Gupta

@Shrutibimpl

Hello, I can build your RESTful APIs using C# and .NET 8. My plan is to set up an ASP.NET Core Web API project structure with clean dependency injection. I can implement JWT token authentication for secure user logins. I can map your database schema using Entity Framework Core or Dapper to execute fast CRUD operations. I can build HTTP client integration services to handle vendor JSON endpoints cleanly. I can also configure Swagger OpenAPI documentation and build a complete Postman collection for your team to test endpoints. 1) Do you prefer Entity Framework Core or Dapper for your data access layer? 2) What database engine like SQL Server or PostgreSQL does your schema use? 3) Which repository host like GitHub or GitLab do you use for your Git workflow? Thanks, Bharat

@jagratip3

Hello, I have 10+ years of experience in .NET development and strong expertise in building secure, scalable RESTful APIs using C#, .NET 6/7/8, ASP.NET Core, Entity Framework Core, Dapper, SQL Server, and Swagger/OpenAPI. I can develop clean backend architecture with JWT authentication, complete CRUD APIs, database integration, third-party JSON API integrations, validation, error handling, and performance optimization. I follow best practices with clean code, proper Git commits, testing, and maintainable API documentation. Deliverables I will provide: Complete source code with structured Git history Swagger/OpenAPI documentation Postman collection for API testing README with setup steps, environment variables, and deployment guidance Tested APIs meeting required response and performance standards I have experience delivering production-grade .NET APIs and can start quickly with a clear implementation plan and timeline.

@metastyx

Hello, Your project aligns well with my experience in building secure, production-ready ASP.NET Core Web APIs using C#, .NET 8, Entity Framework Core, SQL Server/My Sql/PostgreSQL, and REST best practices. I can develop a clean, maintainable API solution with: >> JWT-based authentication and authorization >> Full CRUD operations for your data models >> Entity Framework Core or Dapper, depending on performance and project requirements >> Third-party JSON API integrations >> Swagger/OpenAPI documentation >> Proper validation, exception handling, and structured logging >> Clean Git commit history >> Postman collection for API testing >> README with setup, configuration, and deployment instructions I follow a layered architecture with dependency injection, reusable services, and clean coding principles, ensuring the solution is scalable, easy to maintain, and straightforward to extend. Performance, security, and API consistency are always priorities, and I can work towards your target response time of ≤200 ms under the agreed local test conditions. I'd be happy to discuss your requirements in more detail and align on the implementation approach, timeline, and project milestones before development begins. Thank you for your consideration.

@ammarahmed20

With my 6+ years of experience in full-stack development and a deep knowledge of Microsoft technologies, I strongly believe I am the right freelancer for your .NET RESTful API development project. My proficiency with C#, .NET 6, and Entity Framework, coupled with my knack for clean, well-structured code-writing aligns well with your requirement of delivering a robust API suite. I am also well-versed in working with Dapper for data access and Swagger/OpenAPI for documentation. Some notable projects in my portfolio include building autonomous AI agents, automation systems, and full-stack platforms. My clients have praised me for my commitment to closing infrastructure gaps - exactly what your team needs right now. I can guarantee not just a timely completion of the job using Git repository to deliver source code but also an up-to-date Swagger spec, README file and Postman/RestClient collection proofing that all endpoints are working as expected.

@EhsanWebCreator

Hi, I can build your .NET REST API suite with JWT authentication, clean CRUD endpoints, EF Core or Dapper data access, and Swagger/OpenAPI documentation. I will also integrate the two JSON-based vendor APIs, provide a Postman collection, README, and keep the code structured for testing and future extension. I can start immediately and deliver a reliable, documented API layer within 5 days.

@gsantharam7088

Hello, Your project aligns perfectly with my expertise. I have extensive experience building secure, high-performance RESTful APIs using **.NET 6/7/8, ASP.NET Core, Entity Framework, Dapper, JWT authentication, Swagger/OpenAPI, SQL Server, and third-party API integrations**. For this project, I'll deliver clean, scalable, and well-documented APIs with proper architecture, validation, exception handling, logging, and performance optimization. Every endpoint will follow the agreed response structure, include complete Swagger documentation, and be thoroughly tested to meet your performance target of **≤200ms** in a local environment. Deliverables include: ✔ Well-structured Git repository with meaningful commit history ✔ Complete Swagger/OpenAPI documentation ✔ README with setup, environment variables, and run instructions ✔ Postman collection for quick API testing ✔ Secure JWT authentication, CRUD APIs, and seamless vendor integrations I believe in writing maintainable code that is easy to extend as your product grows. I can start immediately, provide regular progress updates, and ensure timely delivery with production-ready quality. I look forward to discussing your API architecture and project timeline. Best regards, Santharam

@Dinfo12

With a comprehensive background in ASP.Net and 5+ years specifically focused on .NET backend development, I am the ideal candidate for your RESTful API project. Leveraging my 8 years of programming experience and proficiency in C# with .NET 6 or later versions, I can expertly develop APIs that not only meet your requirements but excel in performance. I've worked extensively with frameworks like Entity Framework and Dapper while using Swagger / OpenAPI to ensure well-documented code, much like you’re looking for. Your project entails juggling multiple critical elements- from user authentication to integration of third-party vendors exposing JSON endpoints. My experience spans across diverse domains including authentication systems, CRUD operations, and integrations, all of which align with your project's requirements. In addition to these tailored technical aspects, when you work with me, communication becomes seamless and progress is transparent as I provide daily updates via Skype or any medium of your preference. From the beginning to end of this project, you will know about every commit as I maintain a clean commit history in a Git repo. With my proficiency in the required technologies partnered by my dedication for quality work, timely delivery comes without compromise. Let's make this happen!

@sonika1419

**DO NOT PAY ME UNTIL I COMPLETE! :)** Hello my valuable client :) I can definitely work on your working hours. My profile is new over here but I have 7 years of experience in this field. I have completely understood about your project. Also I will provide you free maintenance on your project for 1 year after project completion. Give me one chance to prove myself. Hit the chat button to get started. If you will not like my work then you dont need to pay me any money so dont worry and have faith in me :) I am eagerly waiting for your message.

@alluankit01

Hi, I can build your .NET RESTful API suite with clean C# code, JWT authentication, CRUD endpoints, third-party JSON integrations, Swagger documentation, and Postman/RestClient testing support. The best solution is to first review your database schema, primary data models, authentication requirements, vendor API endpoints, payload formats, and performance expectations. Then I’ll create a structured .NET 6+ API project using Entity Framework or Dapper, implement secure token-based authentication, build all CRUD routes, and connect the required third-party integrations with proper validation and error handling. I’m comfortable with C#, .NET 6/7/8, ASP.NET Core Web API, JWT authentication, Entity Framework, Dapper, REST API design, Swagger/OpenAPI, JSON integrations, Git workflows, Postman collections, performance testing, and clean backend architecture. Deliverables will include: * .NET REST API source code * JWT authentication * CRUD endpoints * Third-party vendor integrations * Entity Framework or Dapper data access * Swagger/OpenAPI documentation * Postman/RestClient collection * README setup guide * Environment variable instructions * Error handling and validation * Git repo with clear commits * Basic performance verification I’ll focus on clean, maintainable, well-documented APIs that match the agreed payloads, pass testing, and stay ready for your next release. Best regards Ankit

@azwa04

Hi, I'd build your REST API layer in .NET 6+ with a clean, modular architecture, implementing JWT-based authentication, full CRUD endpoints for your data models, and a structured service layer that keeps the business logic separate from data access. I'll integrate your third-party JSON APIs using resilient HTTP clients, wire everything to Entity Framework or Dapper based on your preferred approach, and expose every endpoint through a complete Swagger/OpenAPI specification so the API is easy to test and maintain. The project will include clean Git history, environment-based configuration, a Postman collection, and a concise README covering setup and deployment. Before delivery I'll validate the full API suite against the expected payloads, verify the integrations, and optimize the endpoints to consistently meet your performance target before handoff. I can start immediately.

@sumitwebrainbows

As an experienced and versatile .NET developer, I am confident in my ability to excel at this project. My proficiency with C# and the .NET framework, particularly .NET 6 and later, is unparalleled. I can handle all aspects of API development, from wiring up data access using Entity Framework or Dapper to securing operations with JSON Web Tokens (JWT). My belief in the power of proper documentation aligns perfectly with your needs as I'm familiar with Swagger / OpenAPI for producing clear and comprehensive specifications. Moreover, I've successfully integrated numerous third-party APIs into various projects throughout my career using RESTful architecture. This makes me well-suited to efficiently handle the JSON endpoints of your intended vendors. In addition to providing you with clean code committed in a Git repository, an updated Swagger spec reflecting your every endpoint and model, a detailed README for smooth setup instructions, I'll also include Postman or RestClient collections for quick testing. Lastly, my commitment to performance optimization will ensure a seamlessly running application. Meeting the acceptance criteria would not be an issue as I strive to deliver high-quality work that satisfies clients' needs as they focus on value, response time, and error-free operations."