ASP.NET Core API Service Build

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in API Development, RESTful API, .NET, .NET Core, ASP.NET, C# Programming, Microsoft SQL Server, Docker As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen

@customizedata

I’d start by setting up the ASP.NET Core project with a clean structure, SQL Server + EF Core, and JWT authentication, keeping the config flexible for local/staging/production. I’ve worked on Swagger-based APIs before, so I’d build the endpoints with proper CRUD/data-processing flows and have everything exposed clearly through Swagger for easy Postman testing. For the reporting part, I’d keep the queries efficient and return the required aggregated data in clean JSON, with async/await throughout. Once everything is working, I’d add the migrations/SQL scripts, README, deployment settings for Windows Server, and make sure the full API flow can be tested end-to-end through Swagger/Postman. Have been working in .Net since 2010 Looking forward to have a chat with you to discuss further.

@shaktistanwar

Hello, I’m interested in developing your ASP.NET Core API service from the ground up. I understand the requirement for a secure, maintainable backend that can be handed directly to your front-end team. I can build the solution using ASP.NET Core, C#, SQL Server and Entity Framework Core, including: • JWT-based secure authentication and authorization • Clean RESTful CRUD/data-processing endpoints • Efficient async/await implementation • SQL Server database schema, EF Core mappings and migrations/scripts • Reporting endpoints with aggregated JSON responses • Swagger/OpenAPI documentation • Environment-based configuration for local, staging and production • Proper error handling, validation and structured project architecture • Optional Dockerfile if required • Postman testing of authentication, processing and reporting endpoints • Clear README covering setup, build, deployment and configuration I’ll provide a clean Git repository with readable commits and ensure the API is properly structured and documented for easy integration with the front end. I’m ready to start by reviewing your high-level data model and sample data, then I can proceed with the database design and API implementation. Looking forward to working with you.

@seefattechnologi

Ready to do this job as its perfect match with my skills I am an CREATIVE/Multitalented .NET/Full stack developer having rich experience with all the latest technologies with so many successful Tasks. I have some queries to give you accurate time Please ping me to get started and provide you great results. Thanks!!!

@Jennycreation

Hello Sir, I have already worked on similar types of website and software development projects and I am confident that I can successfully handle your project. I am a full-time freelancer with **17+ years of experience** in web development, software development, automation, and API integrations. My expertise includes: * ASP.NET C# web and software development * Android app development * Python automation and web scraping (Amazon, Instagram, Facebook, Google Maps, LinkedIn, Telegram, and other custom scraping solutions) * JavaScript, jQuery, AJAX, Bootstrap, HTML5 * Microsoft SQL Server database development * Payment gateway integration * SMS, Email, Banking, Financial, and Insurance API integration * Custom automation bots and workflow automation software I focus on delivering **high-quality, scalable, and reliable solutions** with clean code and long-term support. Please contact me in private chat so we can discuss your requirements in detail. I can also show you a **demo of similar projects** I have completed. Looking forward to working with you. Thanks & Regards

@vishal1145

Your reporting layer will become a performance bottleneck if you're aggregating large datasets synchronously without indexed views or caching. This will lock up your API under concurrent requests and degrade response times across all endpoints. Quick questions - what's your expected concurrent user load at launch, and are you planning read replicas or Redis for the reporting queries? And do you need role-based authorization beyond basic JWT claims? Here is the architectural approach: - ASP.NET CORE + JWT: Build stateless authentication with refresh tokens, role claims in the payload, and middleware that validates signatures on every request so your front-end never hits unauthorized routes. - SQL SERVER + EF CORE: Design normalized schema with proper indexing on foreign keys and reporting columns, then generate async repositories with IQueryable projections to avoid N+1 queries and keep memory footprint low. - DOCKER + CI/CD: Package the API in a multi-stage Dockerfile that separates build and runtime layers, then script appsettings transforms so you can deploy to staging and production without manual config edits. I've built 8 similar APIs for SaaS platforms processing 10K+ requests per day without downtime. Let's schedule a 15-minute call to align on schema design and caching strategy before you commit to the build.

@AbdulBasitAli045

Dear Client. When it comes to your project, i am expert. I will provide you 100% satisfaction work and full service. It would be great if you hire me. Based on your feedback, I can draft my proposal accurately and from there I can get started. Hence, I look forward to hear back from you in order to proceed ahead accordingly. Let's Go Thanks a lot. Regards

@ganeshrasekar

I can do it

@flintlockwood

Hi, I’m very excited about this project because it closely matches my experience building production ready ASP.NET Core Web APIs with SQL Server, Entity Framework Core, JWT authentication, REST endpoints, and Swagger/OpenAPI. I can build the service from the ground up with clean architecture, async/await, secure authentication, efficient data-processing endpoints, and JSON reporting APIs. I’ll also provide migrations/SQL scripts, clear configuration for local/staging/production, readable Git commits, and a concise deployment README. I’m comfortable delivering APIs that can be tested directly with Postman and handed over to a front-end team. For the first milestone, I propose $30 to get started. The total may increase depending on the final requirements and scope we define after reviewing the data model and API requirements. I’m ready to start immediately. Best regards, Mufraeli

@mayankinnovative

Building your ASP.NET Core API service against SQL Server requires clean architecture, asynchronous execution throughout, and strict JWT-based endpoint security ready for frontend handoff. my approach: I will architect a modular solution (.NET 8/9) using Clean Architecture and EF Core Code-First with optimized SQL Server migrations. I will implement ASP.NET Core Identity with stateless JWT bearer authentication and role-based policies. Data processing and aggregation reporting endpoints will leverage non-blocking async LINQ queries and compiled views for rapid JSON serialization. I will configure Swashbuckle OpenAPI with JWT authorization headers, environment-specific appsettings, and provide an automated Postman collection, database migration scripts, and clear deployment documentation for your Windows Server. 1. Which specific aggregation metrics or grouping parameters are needed for the reporting layer? 2. Are you using IIS or running the API as a Windows Service on the server? I am ready to deliver a fast, maintainable API that passes every Postman test.

@jagratip3

I have strong experience with ASP.NET Core, SQL Server, Entity Framework Core, JWT authentication, REST APIs, and enterprise backend development. I can build your API from the ground up using a clean, scalable architecture with JWT-based authentication, EF Core migrations, async/await patterns, Swagger/OpenAPI documentation, and SQL Server integration. Based on your data model and sample data, I’ll design the database schema, implement secure authentication and authorization, create CRUD and data-processing endpoints, and develop reporting APIs that return aggregated JSON results. Deliverables will include a complete Visual Studio solution, Git repository with structured commits, SQL scripts/migrations, Swagger documentation, environment-based configuration (local/staging/production), deployment guide for Windows Server, and optional Docker support. The final API will be fully testable through Postman and ready for front-end integration.

@naminghn

Hi there, I noticed that you need a brand-new API service in ASP.NET Core that includes JWT-based user authentication and efficient data-processing endpoints. I can design the database schema and implement the necessary Entity Framework Core mappings, ensuring that your REST endpoints are well-documented and ready for the front-end team to use. I understand the importance of clean architecture and asynchronous programming, and I will include Swagger/OpenAPI documentation to facilitate the integration process. Plus, I'll ensure that the deployment to your Windows Server instance is straightforward. Let's discuss the nuances of your data model and how to optimize the reporting layer for the aggregated results. Regards, Ali

@mobasherreza10

Hi there, With 75 successful projects under my belt and a solid 4.9-star rating for consistent quality and on-time delivery, I'm confident I can tackle your ASP.NET Core API Service Build project swiftly and expertly. Working with your high-level data model and sample data, it's my responsibility to design a specialized database schema, develop matching mappings using Entity Framework Core, and create clean REST endpoints with detailed Swagger/OpenAPI documentation that will perfectly suit your front-end team's needs. My great attention to detail includes utilizing JWT for enhanced security. In terms of deployment, I understand the importance of easy switch mechanisms between local, staging, and production environments. I assure you that the connection strings and appsettings will be configured seamlessly to accommodate this need for frequent switches. While providing a Dockerfile would be an added bonus, ensuring smooth deployment to your existing Windows Server instance is more than achievable. Best regards, Mobasher Reza

@ankits0192

Hi there, I understand you need a clean ASP.NET Core API service built from the ground up, with SQL Server, JWT authentication, data-processing endpoints, and JSON reporting that your frontend team can consume immediately. The key is establishing a maintainable API foundation rather than simply making the endpoints work. I’d design the SQL schema from your model/sample data, configure Entity Framework Core mappings and migrations, then structure the service with clean separation between API, business logic, data access, and authentication. JWT-based authentication, authorization, validation, async/await, consistent error responses, and secure configuration would be handled throughout. I’d expose documented REST endpoints and reporting routes with Swagger/OpenAPI, provide SQL migrations/scripts, configure environment-specific appsettings for local/staging/production, and include a Dockerfile if useful. Before handoff, I’d test the complete API through Postman and provide clear build/deployment instructions for your Windows Server. Q1 – Which ASP.NET Core/.NET version do you want to target? Q2 – Will the provided data model include relationships, authentication fields, and reporting requirements, or should I define those from the sample data? Q3 – Do you need role-based authorization in addition to JWT authentication? Looking forward to building a reliable API foundation for your frontend team. Thanks

@Tanmoy236

Hi, I can build your ASP.NET Core API from scratch. With 9+ years of experience, I know clean architecture and async patterns matter for handoff. You need JWT auth, data processing, and reporting. That's straightforward. I'll design your SQL Server schema, configure EF Core mappings, and expose well-documented REST endpoints with Swagger/OpenAPI. JWT login, CRUD, and reporting routes will be async throughout. I'll set up appsettings for local, staging, and production, plus a Dockerfile if helpful. You get a Git repo with readable commits, migrations, and a README covering build, run, and deployment. Do you have the high-level data model ready, and should reporting endpoints return aggregated JSON only? Let's chat to confirm the schema and start.

@longngoc2307

Hi, there. "ASP.NET CORE API SERVICE" - you need a clean backend foundation with secure JWT authentication, reliable data processing, and reporting endpoints that the frontend team can consume directly. I’d build the service with ASP.NET Core, C#, Entity Framework Core, and SQL Server, using clean separation between API, application, domain, and infrastructure layers. I’d implement async CRUD/data-processing operations, JWT authentication and authorization, validation, structured error responses, and reporting queries returning clear JSON models. Swagger/OpenAPI, migrations or SQL scripts, environment-specific configuration, and a Dockerfile would be included where useful. I’d also verify the complete API through Postman before handoff. Can you share the high-level data model and confirm which ASP.NET Core/.NET version you want to target? Looking forward to working with you.

@denisSolution

Hi, I'm Denis, a full-stack developer with experience building production ASP.NET Core APIs using SQL Server, Entity Framework Core, and JWT authentication. I understand you need a solid, production-ready API with clean architecture, proper authentication, and a reporting layer your front-end can consume immediately. The foundation must be maintainable and easy to deploy across environments. Here's my approach: I'll review your data model and design the SQL Server schema with proper indexing. Then I'll set up ASP.NET Core with Entity Framework Core migrations, implement JWT authentication, and build CRUD and processing endpoints following clean architecture principles. The reporting layer will aggregate data efficiently with consistent JSON responses. I'll use async/await patterns throughout, add Swagger documentation, configure appsettings for local/staging/production environments, include a Dockerfile, and commit to Git with clear messages. The critical step is getting the data model right upfront. If there are ambiguities in entity relationships or data flow, we'll clarify those early. I'll ensure consistent error handling and validation across all endpoints for smooth testing. I'm ready to start immediately. Let's discuss the details. Thanks, Denis.

@technologiesit

As an accomplished full-stack developer and AI solutions expert with over eight years of experience spanning 200+ successful projects, I'm primed to deliver your ASP.NET Core API service. I bring a breadth of expertise in .NET and .NET Core development, including extensive work with API Development and Docker - the core technologies you're seeking for this project. My capabilities extend beyond simple code implementation; I aim to provide you with smart architecture, clean code, and a business-first approach that will undoubtedly elevate your project. Moreover, my 'Git mindset' ensures that every commit made on the project will be readable; coupled with SQL scripts or migrations for easy schema manipulation. All these factors culminate into an ASP.NET Core solution featuring JWT login authentication, RESTful endpoints, and an expressive reporting layer- all documented via Swagger/OpenAPI documentation for swift handover to your front-end team.

@metastyx

Hello, Having worked on enterprise applications for over 17 years, I understand the importance of building a reliable backend that is secure, efficient and easy to extend. Your requirement closely aligns with my experience in ASP.NET Core, C#, SQL Server, Entity Framework and REST API development. I would begin by reviewing your data model, sample data and business rules before designing the database schema and API structure. My focus would be on delivering a clean, maintainable solution that your front-end team can integrate without unnecessary complications. My implementation would cover: >> JWT authentication and role-based authorization >> SQL Server schema design and EF Core migrations >> Async CRUD and data-processing endpoints >> Optimized JSON reporting APIs >> Swagger/OpenAPI documentation and Postman testing I would maintain readable Git commits and provide the complete source code, database scripts and deployment documentation. A few initial questions: >> Is your data model finalized, or will database design require further analysis? >> Are the reporting requirements and calculation rules already documented? >> Which .NET version and Windows Server/IIS environment do you prefer? I’d be happy to review your requirements and agree on the architecture, timeline and milestones before development begins. Thanks, Amitava M. Bag