ASP.NET Public API for Transactions

@nvnhat

Hi, I’m an experienced .NET backend developer and can build a clean, extensible ASP.NET Web API (.NET 6+) that external partners can safely integrate with. I’ll deliver: REST-style CRUD endpoints with proper HTTP status codes Integration with your external database via Entity Framework Core (or a lighter ORM if appropriate) Token-based authentication and role-based authorization Centralized exception handling and clean error responses Swagger / OpenAPI generated from code comments A clear README covering setup, configuration, and extension I’ll keep controllers thin, apply DI best practices, and structure the solution so adding new entities later is straightforward. Best regards, Nhat Nguyen

@Feriver

Hello, I understand you’re looking for a clean, partner-safe ASP.NET Web API (.NET 6+) that exposes RESTful CRUD endpoints for transactional entities backed by an existing external database. I have strong experience building maintainable .NET Core APIs with thin controllers, service/repository layers, and dependency-injection patterns that make it easy to extend with new entities while keeping behavior predictable for third-party integrators. I will implement a well-structured solution using Entity Framework Core (or a lightweight alternative if the schema demands it), with clear DTOs, validation, and consistent HTTP status codes. Authentication will be token-based (JWT) with role-based authorization to ensure partners only access what they should. Error handling will be standardized with meaningful responses, structured logging, and safe exception mapping so integrations don’t break on edge cases. You’ll receive a complete API project with Swagger/OpenAPI generated from code comments, plus a concise README covering build/run steps, environment variables, and configuration for the external DB connection. The end result is a secure, extensible API layer that external partners can integrate with confidently and you can evolve over time. Thanks Asif.

@rupareliyagirish

I am excited about the opportunity to work with you on developing an ASP.NET Web API for your external partners. With 12 years of experience in web development, I am well-equipped to create a secure, efficient, and scalable API that allows for the creation, reading, updating, and deletion of data as per your specifications. My expertise spans across a variety of technologies including ASP.NET, React Js, Angular Js, Node Js, and TypeScript, ensuring that I can deliver a high-quality product tailored to your needs. I understand the importance of security in API development and will implement best practices to safeguard against unauthorized access. I am confident that I can complete the project within the specified timeline while meeting your expectations for quality and functionality. I look forward to discussing your project further to ensure I deliver the best results according to your requirements. Best Regards, Girish R.

@awaisyousaf39

Hi, I can deliver a clean, secure ASP.NET Web API (.NET 6+) with well-designed REST endpoints backed by Entity Framework and your existing database. The API will follow proper HTTP conventions, include token-based authentication with role-based authorization, and implement robust exception handling for safe third-party integration. You’ll receive a maintainable, extensible solution with thin controllers, DI-based architecture, Swagger/OpenAPI documentation, and a concise README covering setup and extension.

@maximg10

⭐Hi, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since I have extensive experience in API development with ASP.NET and have successfully implemented RESTful Web APIs for various clients. I specialize in Microsoft SQL Server, .NET, and ASP.NET Core Web API, ensuring seamless integration of external partners with robust token-based authentication and role-based authorization mechanisms. This ASP.NET Web API project will streamline transactional data management with clean REST-style design, proper HTTP status handling, and solid exception management, prioritizing user-friendly integration for third-party developers. If you have any questions, would like to discuss the project in more detail, or would like to know how I can help, we can schedule a meeting. Thank you. Maxim

@mkh559a5a1fd66e9

With over a decade of experience in full stack development, specifically specializing in .NET technologies such as ASP.NET Web API and C#, I bring a wealth of knowledge to your project. The successful implementation of transactional APIs hinges on optimal performance, robust security, and meticulous documentation- all of which I excel at delivering. Having also worked with Entity Framework, I am well acquainted with wiring up APIs to external databases, ensuring efficiency and extendability. Moreover, my proficiency extends to areas such as role-based authentication, token-based authorization, and generating concise README documents for seamless utilization of the final product. In addition to this, I have previously worked on projects that necessitated clean REST-style designs with solid exception handling- requirements similar to your own- which means fewer surprises and hitches with the third-party developers looking to integrate into your system. Finally, what sets me apart is my commitment not just in writing clean code but seeing it through the deployment process through CI/CD pipelines, ensuring everything runs smoothly in real-time environments. Rest assured by choosing me for this task; you are selecting a dedicated professional who’s experienced with your tech-stack and committed to delivering a high-quality solution on time. Let’s come together and fuel your vision for robust transactional data-API with my expertise and experience!

@ddtechz

Hello there, I have 10+ years of experience with ASP.NET and backend development. I can build a clean and secure ASP.NET Core (.NET 6+) Minimal API using a RESTful design with full CRUD support, proper HTTP status codes, and solid exception handling. The solution will include token-based authentication, role-based authorization, Swagger/OpenAPI docs, thin endpoint logic with DI, and a clear README. It will be easy to extend with new entities once the database details are shared. Thank you for your consideration. Best regards, Deo

@zhens2

https://www.freelancer.com/projects/php/Twitch-Integration-Module-for-DotNetNuke/reviews https://www.freelancer.com/projects/api-developmet/ASP-NET-Web-Control-for/reviews As an experienced Senior Full-Stack Developer, I have a wealth of knowledge that suits your project description perfectly. With over 8 years of expertise in .NET and API development, I am well-versed in the creation and maintenance of secure, scalable, and REST-style web APIs. Furthermore, my skills extend to ASP.NET and C# Programming which are vital for this project. My proficiency in Entity Framework and other ORMs, combined with a deep understanding of token-based authentication and role-based authorization using .NET technologies, makes me the ideal candidate for building out your API endpoints. I prioritize clean coding practices, emphasizing proper HTTP status codes and robust exception handling to help developers integrate effectively without unwanted surprises. During my career, I’ve developed several public APIs similar to what you require. Additionally, my ability to generate clear, coherent Swagger/OpenAPI documentation, along with concise README files, will make it easy for you or any future developers to maintain and extend the system effortlessly. I'm eager to bring these proven abilities to your project and provide you with a fully functional ASP.NET Web API tool kit that targets .NET 6 or later

@jagratip3

Hi there, I can deliver a clean, maintainable ASP.NET Web API (targeting .NET 6+) that allows external partners to safely perform CRUD operations on your transactional data. My approach emphasizes RESTful design, proper HTTP status codes, robust exception handling, and easy integration for third-party developers. Proposed Implementation: Endpoints: CRUD for all transactional entities, fully mapped to your external database via Entity Framework Core (or a justified lightweight ORM if needed). Security: Token-based authentication and role-based authorization to ensure only authorized partners can access the service. Documentation: Auto-generated Swagger / OpenAPI docs from code comments for quick partner onboarding. Clean Architecture: Thin controllers, dependency injection, and layered services for maintainability and easy extension to additional entities in the future. Deliverables: Complete ASP.NET Web API project, README with build/run instructions, environment variable setup, and sample configuration. I prioritize readable, well-documented code and can integrate the service with your existing database schema seamlessly. I’ll ensure the API is ready for immediate partner consumption while remaining flexible for future growth. Best regards,

@sasaprogramer21

Hi, I can build a clean ASP.NET Web API on .NET 6 or later that exposes safe, predictable CRUD endpoints over your existing external database with thin controllers and a maintainable service layer. I have delivered partner facing APIs with strict REST conventions, proper status codes, consistent error responses, and clear Swagger documentation so third party teams can integrate smoothly. I will implement Entity Framework Core with a structured repository or service pattern, strongly typed DTOs, validation, and mapping to keep domain logic out of controllers. Authentication will be token based with role based authorization enforced per endpoint, and I will add centralized exception handling using middleware to return consistent problem details responses. Swagger and OpenAPI will be generated from XML comments with example payloads, and the solution will follow standard dependency injection patterns so you can add new entities without refactoring core plumbing. You will receive a complete repo with build and run instructions, environment variable configuration, and tests for key endpoints. I am ready to deliver this with professional quality and reliable communication. Thanks.

@craigd43

Having worked extensively with C# in my past projects, I believe I have the technical skills and the experienced mindset to build the ASP.NET Public API for Transactions that you need. My first hand experience in developing similar Web APIs using Entity Framework creates the solid foundation required for this specific task. Additionally, my knowledge in alternative ORMs ensures that I will make only justified choices to cater for your project requirements. In conclusion, with my comprehensive skills in C# programming and extensive experience in full-stack web development, building efficient, scalable and user-friendly applications I am fully equipped to meet your needs. I am confident that by choosing me for this task you'll be enlisting an excellent partner who is committed to delivering high-quality code, meeting deadlines, and exceeding client expectations.

@sumitwebrainbows

Hello, I build clean, production-ready ASP.NET Web APIs designed specifically for third-party consumption, where predictable behavior, clear contracts, and maintainability matter just as much as functionality. Your emphasis on REST conventions, thin controllers, and extensibility aligns closely with how I structure APIs in long-lived systems. How I’d approach your API 1. API foundation & architecture 2. Data access 3. REST-style CRUD endpoints 4. Security 5. Documentation & handover What you’ll receive A fully functional, extensible Web API ready for partner integration Thin controllers with business logic isolated for easy future growth Clean codebase that new developers can understand quickly Once you share the database connection details and sample data, I can scaffold the project quickly and confirm entity mappings before expanding to full CRUD coverage. Happy to discuss authentication preferences, entity scope, or future versioning strategy up front. Best regards,

@anshumanvermaUK

Hi I can build a clean ASP.NET Web API (.NET 6+) with well-structured CRUD endpoints wired to your external database using Entity Framework and standard dependency injection. I’ll implement token-based authentication, role-based authorization, proper HTTP status handling, and clear exception management so external partners can integrate safely. Thanks Anshuman

@saliktechpro

Hey , I just finished reading the job description and I see you are looking for someone experienced in Web API, .NET, Microsoft SQL Server, API Development, C# Programming, ASP.NET, RESTful and .NET Core Web API. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Salik.

@hr157

Hi, I build clean, extensible ASP.NET Web APIs designed specifically for external integrations—where predictable behavior, security, and clear contracts matter. With 6+ years of backend experience, I focus on thin controllers, well-structured services, and data access layers that are easy to extend as new entities are added. The key risk with partner-facing APIs is ambiguity: unclear status codes, leaky exceptions, or tightly coupled controller logic. I’ll design a REST-style API on .NET 6+ with proper HTTP semantics, robust exception handling, and a clean separation of concerns so third-party developers can integrate confidently. What I’ll deliver: ASP.NET Web API targeting .NET 6 or later CRUD endpoints mapped to your external database (EF Core or justified lightweight ORM) Token-based authentication with role-based authorization Thin controllers + service/repository layers using DI Consistent error handling and proper HTTP status codes Swagger / OpenAPI documentation generated from code comments Concise README covering setup, build, run, and environment variables Why hire me: I specialize in maintainable, partner-ready APIs—built to be secure, predictable, and easy to evolve without rewrites. Happy to review your schema, discuss ORM choice, and outline a clean extension strategy once we start.

@novatech2210

Hello Syed, nice to meet you. I've just completed a similar ASP.NET Web API project for another client who needed secure and scalable API design for real-time data exchange. I'm the perfect fit for this project because I excel at crafting clean, RESTful APIs that balance performance and maintainability, leveraging Entity Framework to connect with external databases, and integrating token-based authentication and role-based authorization. With 6+ years of full-stack dev experience, 40+ similar projects, and a focus on clean code, performance, and deadlines, I'll deliver a well-structured solution that meets your needs and is easy to extend with additional entities later. In a previous project, I reduced manual configuration time by 80% and increased API uptime by 99% through proper exception handling and logging. Multiple 5-star reviews on ASP.NET Web API projects and OpenAPI integrations speak to my expertise. Can you clarify whether you'd like me to implement the Entity Framework Core or another ORM, and are there any specific security requirements or compliance standards I should be aware of? Happy to hop on a quick call (no obligation) to discuss architecture, timeline, and a clear plan + quote. Chris | Lead Developer | Novatech

@ZeeshanXOfficial

With my extensive experience in .NET Core Web API and C# Programming, I am confident that I am the best choice for your ASP.NET Public API project. Over the years, I have built numerous robust and scalable APIs that are not only efficient but also safe and secure. Outlining your needs for proper REST-style design, HTTP status use, and solid exception handling is well-aligned with my commitment to quality code. In your project description, you have emphasized the importance of maintainability. Let me assure you that I am well-versed in standard dependency-injection patterns and always follow them for easy maintenance of my codes. Furthermore, my experience with Entity Framework and Microsoft SQL Server means that I can efficiently wire the endpoints to your external database without any surprises. Lastly, I understand the significance of up-to-date documentation and a concise README file. Besides developing a fully functional ASP.NET Web API project targeting .NET 6 or later, providing Swagger / OpenAPI docs generated from the code comments as well as a clear explanatory README file will be my priorities. Overall, with my skills in API Development, proficiency in languages like C#, PHP, and Python coupled with my focus on delivering high-quality work - I guarantee an exemplary solution that aligns impeccably with your project goals.

@bilal0356

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on .NET, C# Programming, ASP.NET, Microsoft SQL Server, RESTful, Web API, .NET Core Web API, API Development Lets connect in chat so that We discuss further. Regards

@angelantonioc

Hello, you want a clean, scalable ASP.NET Web API for CRUD on transactional data behind an external database, with REST design, proper HTTP status usage, and solid error handling. I can handle it: I’ve built .NET 6+ APIs with EF Core against external SQL Server databases, focusing on maintainability and clear integration points. How I’d implement it: - Scaffold a minimal ASP.NET Core Web API (.NET 6+) - Wire EF Core to the external DB with a thin, extensible model and repo - Implement JWT auth and role-based authorization - Keep controllers thin with a generic service layer - Enable Swagger/OpenAPI with XML comments - Add robust exception handling and consistent error responses - Provide a concise README with build/run steps and env vars Available to start quickly; target ready state in a few days depending on data. Which authentication flow do you prefer (JWT with refresh tokens or OAuth), and which roles should be enabled first? Best regards,