Dotnet Core API Support

@Microlent

Hi, I’ve read through your requirements carefully — this is a very familiar workflow for me, and it’s exactly how I prefer to work on existing .NET Core APIs. I regularly jump into established C# / .NET Core codebases, extend RESTful endpoints, and resolve production-impacting bugs without breaking existing contracts. I’m comfortable working from Postman collections, reproduction steps, and Swagger/OpenAPI specs, and I follow standard dotnet-format and clean architecture practices by default. How I’d handle this work: * Pull the repo and run the solution locally via `dotnet` CLI * Create a feature/bugfix branch * Implement new or refactored endpoints (controllers + services) * Fix reported issues with focused, minimal changes * Add or update unit tests to prove each fix * Validate everything against your Postman collection * Open a clean PR with a short, readable changelog Relevant experience: * .NET Core / ASP.NET Core REST APIs (CRUD, complex workflows, auth-aware routes) * Bug fixing in live APIs with backward compatibility constraints * Swagger/OpenAPI–driven development * MediatR-based projects (happy to work with or without it) * CI-friendly, testable C# code I can jump in immediately and start as soon as you share repo access and the task list. Happy to review the endpoints and bugs first and give you a quick execution plan if helpful. Looking forward to working together. Best, Jenifer

@joomextensions

Hello, We are a skilled development team specializing in .NET, AI/ML, Python, Zoho, and custom enterprise solutions. We focus on delivering scalable, secure, and high-performance applications tailored to business needs. From automation and data-driven systems to CRM integrations and cloud-ready platforms, we ensure clean architecture, timely delivery, and clear communication throughout the project. Our goal is to provide reliable technology solutions that add real value and long-term growth to your business. Regards, Harsh Thoriya

@shubhbatra170

I am a Professional Full Stack Software Developer. As per my past experience, I have the ability to work on web application development using .NET MVC, .NET Core, and SQL Server. I am self-motivated, diligent, and confident in my work. I am extremely detail-oriented, and I pay attention to every single aspect of all the tasks. I have 6+ years of experience in Database development and have expertise in complex queries, stored procedures, User Defined Functions. I have logical problem-solving abilities too. As per my experience, I am sure that I will give you my best and deliver quality results with 100% satisfaction at the given time duration and It would be a pleasure to work with you & I will look forward to being connected with you. I also have a very good eye on Front End Design. I love being able to tackle new projects and work with different clients as much as possible. Also, I am an all-around creative individual with broad experience in • .NET MVC • .NET Core • .NET Web API • Blazor • C# • SQL Server • Entity Framework • LINQ • Jquery • Javascript • Vuejs • Angular js • Highchartjs • HTML5 • Bootstrap 3 & 4 • CSS3 ‹‹‹‹‹‹‹ Areas of my expertise ››››››› • Integration of 3rd party applications • Custom development and minor fixes • Code and Speed Optimization • Payment Gateway integrations • API integrations ‹‹‹‹‹‹‹ Why Choose Me ››››››› → 7-days Availability → Unlimited Revisions → Fast Delivery → Satisfaction Guarantee Thanks and Regards, Shubham

@vinod150987

Designed and developed RESTful APIs using ASP.NET Core (.NET 6/7) following SOLID principles and clean architecture. Built secure and scalable backend services using ASP.NET Core MVC, Web API, and Minimal APIs. Implemented authentication and authorization using JWT, OAuth 2.0, and role-based access control. Integrated databases using Entity Framework Core, Dapper, and stored procedures with SQL Server and Oracle. I have long experience with right skills to work on this project. Please send me a message so we can discuss further. Thank You.

@Weborchid

Hello, I’m a hands-on Senior .NET Core Developer with strong experience building, extending, and stabilising RESTful APIs in C#. I regularly work in existing codebases where the focus is on adding new endpoints without breaking contracts, fixing hard-to-track bugs, and keeping everything clean, testable, and aligned with established coding standards. I’m comfortable working with private Git repositories, branching cleanly, implementing changes in controllers and services, and validating behavior using Postman collections and unit tests. I also have experience with Swagger/OpenAPI and MediatR-style patterns, and I follow dotnet-format conventions to ensure PRs are easy to review and merge. I can jump in quickly once access is shared. Let’s connect to review the endpoint list and bug details, and I can confirm availability and provide a clear ETA to move this work forward right away.

@ASSAMWEB

Greetings, I have read the project description I have been working on a similar project in recent time ".net Core AI Backend " I am interested in the work open a chat to discuss requirements in details.

@gsantharam7088

Hello! I have more than 8 years of experience in .Net Core, .Net core MVC, c# and with EF core as well. I have also worked in developing web APIs and integrating them in front applications developed using React and Blazor. Also, I have very good experience in deploying the applications in Windows IIS server and Azure cloud and managing it. I can help you assist with both front-end and back-end development. If you are interested we can connect and I can show you some work that I did in the past. Thanks!

@mykhaylob4

✋ Hi there. I can provide reliable support for your existing .NET Core RESTful API, expanding endpoints and fixing persistent bugs while ensuring all changes are clean, tested, and maintainable. ✔️ I have hands-on experience building and maintaining .NET Core APIs with C#, creating controllers, services, and middleware that compile cleanly and follow standard conventions. I’ve handled endpoint expansions, bug fixes with unit tests, and Postman-based regression validation to keep APIs stable during active development. ✔️ For your project, I will branch from your repo, implement the requested endpoints, fix reported bugs, write targeted unit tests, and provide a clear changelog for swift review and merging. I can also ensure Swagger/OpenAPI consistency if needed, keeping your API contracts intact. ✔️ The goal is a fully functional, well-tested backend where new and existing routes work reliably, regressions are prevented, and your Postman tests pass without issues. Let’s discuss your endpoint priorities and get started on the repo immediately. Best regards, Mykhaylo

@vipulpithiya1448

Hi, I’ve worked extensively with ASP.NET Core REST APIs, adding new endpoints, refactoring existing routes, and fixing production bugs without breaking current contracts. I’m comfortable working in private Git repositories, following a branch → test → PR workflow, and validating changes using Postman collections and unit tests. I regularly deliver: Clean C# controllers and services that compile with the dotnet CLI Targeted bug fixes backed by unit tests A brief, clear changelog for easy review and merge I can jump in immediately once you share the repo and endpoint list, review the scope quickly, and start delivering PRs right away.

@sumitwebrainbows

With a solid 14 years of experience in the industry and strong expertise in .NET Core, RESTful API development and C# Programming, I assure you that I am professionally skilled and capable of delivering the solutions you need. I am confident that my team's efficient approach to development combined with my problem-solving skills can help us quickly identify the issues your current routes are facing, minimize any impact on your ongoing operations and make certain they are resolved effectively. Apart from using the power of the full stack .NET Framework or .NET Core, we also specialize in Windows Desktop Applications, Cross-Platform Mobile/Desktop Apps (using .NET MAUI), and SQL Server/MongoDB Database Optimization. Our skillset is geared towards building scalable web applications and reliable software; this ensures a sturdy and dependable backend infrastructure for your API. We're ready to kickstart this project as soon as possible. The moment you furnish us with an access to your private Git repository, we'll diligently review your detailed list of endpoints to ascertain their viability and ensure our deliverables are on par with expectations. Moreover, our approach includes rigorous unit testing to guarantee every bug fix is well-proven and error-free. So let's get started!

@balakumar1023

Thank you for considering my application. I have worked as a .NET developer for the past 9 years, with a specialization in .NET Core for 5 years. My skills include proficiency in ASP.NET MVC, SQL, Azure, Web API, JWT, jQuery, JavaScript, NopCommerce, C#, HTML, and CSS. With my diverse experience in .NET development, along with my expertise in frontend technologies, database management, and API development, I am confident in my ability to contribute to your project. I am excited about the opportunity and look forward to discussing further details.

@ramugarkini

Dear Client, I have strong hands-on experience building and maintaining RESTful APIs using .NET Core, and your requirement aligns perfectly with my recent work. I have worked on production-grade backend systems where I handled: • Designing and expanding REST API endpoints • Refactoring controllers and service layers • Debugging route-level and business logic issues • Writing unit tests to validate bug fixes • Working with Postman collections for regression testing • Managing Git workflows with clean branching and PRs I am comfortable working with existing codebases that build via dotnet CLI and can quickly understand architecture before implementing changes. I ensure that: • Existing contracts remain intact • New endpoints follow clean architecture principles • Code follows dotnet format standards • Proper testing is done before raising PR If required, I am also comfortable with Swagger. I can start immediately and provide a quick turnaround after reviewing the repository and issue list. Looking forward to collaborating and delivering clean, maintainable updates to your API.

@nehas0619

Hello I’ve recently worked on several .NET Core REST APIs involving adding new endpoints, refactoring existing controllers/services, fixing production bugs, and covering changes with xUnit tests while keeping contracts backward-compatible; I’m comfortable with Swagger/OpenAPI and have used MediatR where it made sense. I can jump in immediately and start as soon as the repo and task list are shared.

@uniqedeveloper

Hello There, I'm new on freelancer but having more than 10+ years of experience in .NET and ready to work on lower rate e.g.500 INR per hour I totally understand the pain here. When an API mostly works but a few routes misbehave, it slows everything downstream—especially when clients depend on stable contracts. You need precise fixes and clean extensions, not risky refactors. I’ve worked on several .NET Core REST APIs where I stepped into existing private repos, added new endpoints, and resolved production bugs without breaking consumers. In one recent case, I extended C# controllers and service layers, fixed edge-case routing and validation issues, added unit tests, and delivered PRs that passed Postman collections and CI on the first review. I’m comfortable following dotnet-format rules, keeping contracts intact, and documenting changes clearly for fast merges. My workflow is straightforward: pull the repo, branch cleanly, reproduce issues using your steps and Postman collection, implement targeted fixes, add tests, and open a focused PR with a short changelog. Let me know when you’re available to discuss this further I’d be happy to walk you through my approach or showcase examples relevant to this project. Looking forward to hearing from you! Best regards, Mulayam

@mariamz24

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on Java, .NET, C# Programming, ASP.NET, RESTful, .NET Core, .NET Core Web API, API Development Please come over chat and discuss your requirement in a detailed way. Thank You

@kaya389

Hi, I am a Computer Engineering student with hands-on experience in building and maintaining RESTful APIs using ASP.NET Core. Your workflow (branching, unit testing, and Postman verification) aligns perfectly with my development habits. My Relevant Experience: Full-Stack Development: I recently architected and developed a live ordering system for a cafe. I built the entire backend using ASP.NET Core, focusing on database integrity with EF Core and ensuring low-latency updates for real-time order tracking. API Design & Refactoring: I have experience managing complex data structures, dynamic filtering, and ensuring clean, maintainable codebases that follow standard naming conventions. Testing & Tooling: I am very comfortable using the dotnet CLI, handling migrations, and using Postman for endpoint verification. I also have experience with Swagger for API documentation. I can jump into your private repo immediately. Since my previous project involved handling real-time order states and payment simulations, I am well-versed in squashing stubborn logic bugs and writing unit tests to prevent regressions. I am ready to review your endpoint list and start coding. Looking forward to hearing from you!

@nikhwr

Working Microsoft Professional having good knowledge on 1. .Net as well as API development (.Net Stack). 2. T-Sql and SP's. 3. Unit Testing and Testing Automation. Seems i am the perfect match for the kind of work you are expected. Kindly share more details to me to have a look and discussion on it.

@GeorgeSobhy1

I can help you with .net project fix at 500 per hour and I can start as soon as possible. Why I’m a strong fit I’m a Software Engineer / .NET Developer working hands-on with C#, REST APIs, SQL Server, Entity Framework, and Git/GitHub in production environments: Oasis Computer Systems (Insurance sector): I currently develop and implement new API features, maintain existing API infrastructure, and troubleshoot and resolve issues to ensure scalability, reliability, and smooth integrations. Digital Marketing Agency (USA): Built and shipped features for multi-tenant portals/CRM, and performed a migration from .NET Framework 4.8 to .NET 8—which required careful attention to backwards compatibility, contract stability, and clean builds. SwapIt (ASP.NET 6 API): Backend work using ASP.NET + EF, implementing JWT auth, secure authentication/authorization, and maintainable patterns (repository pattern).

@anasshahid0894

As-salamu alaykum! Being an experienced .NET developer with a sharp focus on delivering scalable, secure, and maintainable code, I am confident I can add significant value to your project. I have a proven track record in developing complex backend solutions using the latest iterations of .NET framework, including .NET Core, and I'm familiar with RESTful API development requirements and practices inside-out. I understand the importance of maintaining code integrity and preserving existing contracts while adding or refactoring endpoints - and appreciate your emphasis on this in the project description. My meticulous approach to unit testing ensures all deliverables are reliable and bug-free, and my proficiency in Git enables me to seamlessly collaborate within repositories. I'm familiar with top-notch API development tools like Swagger/OpenAPI and MediatR which could undoubtedly streamline our workflow. My experience with building systems that integrate with third-party platforms also speaks to my ability to quickly grasp and troubleshoot issues specific to your project. Let's team up now to elevate your API and bury those pesky bugs for good!