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LOOKING FOR .NET CORE DEVELOPER – DYNAMIC WEB API FROM DATABASE DEFINITIONS WE ARE LOOKING FOR AN EXPERIENCED ASP.NET CORE WEB API DEVELOPER TO BUILD A DYNAMIC, METADATA-DRIVEN API ENGINE. PROJECT DESCRIPTION WE MAINTAIN API DEFINITIONS INSIDE A SQL SERVER DATABASE. EACH API RECORD INCLUDES: - API CODE / ID - SQL QUERY OR STORED PROCEDURE - HTTP METHOD (GET / POST / PUT / DELETE) - PARAMETER DEFINITIONS - OUTPUT STRUCTURE THE REQUIREMENT IS TO BUILD A .NET CORE WEB API THAT: - ACCEPTS REQUESTS LIKE: POST /API/EXECUTE/{APICODE} - FETCHES API METADATA FROM DATABASE - VALIDATES PARAMETERS DYNAMICALLY - EXECUTES SQL SAFELY USING PARAMETERIZED QUERIES - RETURNS JSON OUTPUT - SUPPORTS PAGINATION, FILTERING, AND SORTING - IMPLEMENTS PROPER ERROR HANDLING AND LOGGING - USES AUTHENTICATION (JWT / API KEY) - PREVENTS SQL INJECTION - IS SCALABLE AND PRODUCTION READY TECH STACK REQUIRED - ASP.NET CORE WEB API (.NET 7 / .NET 8 PREFERRED) - SQL SERVER - DAPPER OR ENTITY FRAMEWORK CORE - SWAGGER / OPENAPI - JWT AUTHENTICATION - CLEAN ARCHITECTURE / REPOSITORY PATTERN EXPECTED DELIVERABLES - COMPLETE SOURCE CODE - DATABASE SCHEMA FOR API DEFINITIONS - SAMPLE API CONFIGURATIONS IN DATABASE - SWAGGER INTEGRATION - DOCUMENTATION FOR ADDING NEW APIS DYNAMICALLY - DEPLOYMENT GUIDE IDEAL FREELANCER PROFILE - STRONG EXPERIENCE WITH ASP.NET CORE WEB API - EXPERIENCE IN METADATA-DRIVEN / DYNAMIC API SYSTEMS - GOOD KNOWLEDGE OF SQL SERVER PERFORMANCE - SECURITY BEST PRACTICES - ENTERPRISE-LEVEL API DESIGN EXPERIENCE WHEN APPLYING, PLEASE SHARE: - SIMILAR PROJECTS YOU HAVE DONE - GITHUB / PORTFOLIO LINK - ESTIMATED TIMELINE - COST QUOTE
Project ID: 40195172
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Active 13 days ago
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39 freelancers are bidding on average ₹38,409 INR for this job

I have 10 plus yesrs of ASP.NET core API development with SQL server. I can deliver master piece within your budget and time. A project of this scale and complexity perfectly aligns with my skillset, experience, and industry knowledge. I have a proven track record in .NET Core API development spanning over a decade alongside significant expertise in SQL Server management efficacies. My ability to dynamically adapt to project requirements and ensure robust security implementations, such as preventing SQL Injection and JWT authentication, is one of my key skills. Throughout my career, I've consistently leveraged technologies like Dapper and Entity Framework Core to create clean, scalable software solutions for enterprises. Additionally, my team and I can seamlessly integrate Swagger or OpenAPI, ensuring efficient documentation and scalability. Moreover, I thoroughly understand the crucial aspects of 'clean architecture' and 'repository pattern', woven into the fabric of your project's requirements. Not only can I deliver the scope on time but also provide comprehensive documentation for future enhancements. Trust me to handle your project with precision and efficiency - delivered solutions that are synonymous with Shinersoft's reputation. So why wait? Let’s build your future API system together!
₹30,000 INR in 15 days
5.3
5.3

Hi, I’m an experienced ASP.NET Core developer with strong expertise in building scalable, secure, and metadata-driven Web APIs. I’ve worked on dynamic API engines where endpoints, parameters, and queries are controlled from the database, similar to your requirement. I can build a robust .NET 7/8 Web API that reads API definitions from SQL Server, validates parameters dynamically, executes queries safely using Dapper/EF Core, and returns structured JSON with pagination, filtering, and sorting. I follow clean architecture, repository pattern, JWT/API key auth, Swagger docs, and strict protection against SQL injection with proper logging and error handling. I have solid experience optimizing SQL Server performance and designing enterprise-level APIs ready for production. I can share similar work, GitHub, timeline, and cost in chat. I’m ready to start immediately and deliver clean, well-documented source code with deployment guidance. Best regards, Muhammad Arshaq
₹15,000 INR in 1 day
4.8
4.8

I can build a dynamic metadata-driven API engine using ASP.NET Core Web API, fetching API metadata from a SQL Server database, validating parameters dynamically, and executing SQL queries safely, with proper error handling, authentication, and prevention of SQL injection, scalable and production-ready, with a cost-effective approach, estimated timeline, and similar projects portfolio. Waiting for your response in chat! Best Regards.
₹32,500 INR in 3 days
3.9
3.9

Hello there, I reviewed your project .Net Core Web API -- 2 and understood the requirements at a high level. I focus on delivering clear, stable, and maintainable solutions aligned with the actual scope, I can work with JavaScript, Frontend Development, .NET Core and follow a clean development process with proper structure and error handling. If this aligns with what you’re looking for, please come to chat to discuss further. Best regards
₹12,500 INR in 7 days
3.8
3.8

Dear Client, I have checked your project description and with a strong background in .NET development and a passion for creating efficient and scalable applications, I believe I am the ideal candidate for this role. I have 10 years of experience working with the Aspire, ASP.NET ZERO, Docker, Kubernetes, Azure, AWS HotChocolate,Docker Container, WEB API, Web Services, Rest API, Bootstrap, CSS, VB.NET, .NET, ASP.NET MVC, C#, Graph QL, MS SQL Server, MySQL, LINQ, Oracle, PostgreSQL, MongoDB , Entity Frame, Ajax, jQuery, JavaScript, Angular, Type script with .NET CORE . My previous projects have involved designing and implementing robust software solutions for a diverse range of clients. Thanks & Regards
₹25,000 INR in 7 days
3.9
3.9

Hi, I’m Rahul Singh from Team Velora, and we specialize in building scalable, secure, and metadata-driven ASP.NET Core Web APIs. We can develop your dynamic API engine that reads definitions from SQL Server, validates parameters, executes queries safely, and returns JSON with support for pagination, filtering, and sorting. The solution will include JWT authentication, Swagger/OpenAPI integration, clean architecture, and full documentation for adding APIs dynamically.
₹25,000 INR in 7 days
3.3
3.3

I am a senior developer of ASP.NET Core MVC & CMS & ASP.NET & Java with over 8 years of experience in software development. I am an expert on windows and web development using C#, VB.NET, VB6, ASP.NET, Entity Framework, Spring Boot. I work with ASP.NET, Core, MVC, Web API, WebServices, WCFServices, Webform, SQL Server, MongoDB, MySQL, Crystal Report, RDLC, SSIS, SSRS, HTML, CSS, Javascript, TypeScript, Jquery, AJAX, Angular, TFS, SVN, Github, GitLab, Azure, Plesk, Angular, Angular2, Javascript, HTML, CSS, JQUERY.
₹20,000 INR in 7 days
3.4
3.4

(18+years), Expert .NET Web API With my impressive 14-year career as a Full Stack Developer specializing in .NET Core, C#, and ASP.NET MVC, among others, I strongly believe that I am the best fit for your project. Throughout my career, I've worked on several similar projects and have extensive experience in building dynamic API systems. My knowledge of SQL Server Performance and enterprise-level API design align perfectly with your project requirements. Additionally, my proficiency extends beyond just developing the APIs. For example, I'm well-versed in implementing robust security measures to prevent SQL injections and ensure the safety of your data. Upon reviewing your project description, it is evident to me that my expertise in JWT Authentication, clean architecture, and repository pattern would also prove valuable to your needs. Furthermore, I am fully committed to providing clean code that guarantees seamless deployment through CI/CD pipelines. Together, let's create a scalable and secure API engine from your database definitions that is guaranteed to exceed expectations!
₹25,000 INR in 7 days
2.8
2.8

As a seasoned .NET Core developer with a track record of building dynamic and metadata-driven API engines, I am the perfect fit for your project. Drawing from my two decades of experience in web development, I have gained proficiency in ASP.NET Core, Dapper/Entity Framework Core, SQL Server, Swagger/OpenAPI, JWT authentication, and clean architecture that this project expects. My approach to developing APIs is steeped in a deep understanding of security practices, scalability, and efficient query execution. It's noteworthy that I've previously worked on similar projects where I leveraged SQL Server and meticulously parameterized queries to prevent any possibility of SQL injection attacks. Additionally, having dabbled in enterprise-level API design, I know how crucial it is for an API to be agile yet sturdy. One standout facet that makes me qualified for your project is my familiarity with metadata-driven systems. I can efficiently handle the storage and retrieval of API definitions from your SQL Server database while ensuring seamless validation of parameters and providing structured JSON outputs. Having built such systems in the past, I can also aid you in drafting foolproof documentation for adding new APIs dynamically. In sum, my profound comprehension of both the technical elements like .NET-Core Web APIs as well as the peculiarity required for a successful production-level deployment makes me a strong candidate.
₹25,000 INR in 7 days
2.4
2.4

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.
₹35,000 INR in 7 days
2.2
2.2

With a decade and a half of industry experience, I am well-versed in all aspects of .NET development and have a strong command of the required tech stack. I have successfully built numerous scalable web applications and cross-platform systems like yours, making me adept at handling APIs driven by dynamic metadata, securing databases, and implementing robust error handling. From my portfolio, you will see that I can deliver on tasks as granular as polishing SQL Server performance, making me well-equipped to handle database-oriented projects. Moreover, I have extensive knowledge of ASP.NET Core Web API having done several similar projects in the past including those with Swagger/OpenAPI integration for client communication. Security is always a top priority for me especially in enterprise-level solutions given the sensitivity company data warrants. My proficiency with JWT Authentication, understanding of clean architecture/Repository Pattern principles combined with repository pattern knowledge make me an appropriate choice for your project. Trust me to deliver quality work within the defined timeline and cost frame
₹12,500 INR in 7 days
2.2
2.2

I’m an ASP.NET Core Web API developer with strong experience in metadata-driven, dynamic API systems. I build secure, scalable APIs using .NET 7/8, SQL Server, Dapper, JWT, and Clean Architecture. Similar tech used in my project: indraheera.org.
₹25,000 INR in 7 days
0.4
0.4

I am the perfect fit for your project. I specialize in creating fast, reliable, and secure ASP.NET Core Web APIs. I have expertise in building metadata-driven systems like the one you require, ensuring dynamic API execution from SQL Server. My focus is on clean architecture, robust security (JWT), and efficient error handling. I will deliver complete source code, database schema, Swagger integration, and detailed documentation. With a proven track record in similar projects, I guarantee a scalable, production-ready solution meeting all your requirements. Let's discuss your project further for a seamless collaboration. Best regards, Eli Tanenbaum
₹28,150 INR in 30 days
0.0
0.0

Hello Dear Client, Please inbox me with your project details. I can complete the work within your budget and time frame, and I’m available to start immediately
₹37,000 INR in 7 days
0.0
0.0

Dear Hiring Manager I am Deepak Pareek. I am writing to you for .NET CORE DEVELOPER – DYNAMIC WEB API FROM DATABASE DEFINITIONS. We have big tech stack and having more than 15+ experience in software development includes Web, Mobile, Hybrid application. We have contributed to the tech road-map to meet company objectives and deliver impact. We really feel fit ourselves in transparent and highly technical culture so that I am so excited to apply for this job to be on the mission with the company to design sustainable solutions which can change the life of user. I would welcome the opportunity to further discussion for project scope and budget. Sincerely,
₹25,000 INR in 7 days
0.0
0.0

As an expert in .NET Core with a solid understanding of databases and SQL, I'm confident that I can meet and exceed your expectations for this project. Over the years, I've developed numerous dynamic API engines by leveraging metadata from databases—making me uniquely suited for this assignment. I’m proficient in using Dapper and Entity Framework Core, both of which will significantly contribute to the performance and quality of your API. I take security very seriously and will ensure that your API is completely secure from SQL injection attacks. My experience with JWT authentication adds another layer of protection to the system. At Smik Systems, we uphold a clean architecture and Repository Pattern, two fundamental components vital for the maintenance of your API engine. Incorporating the latest technologies such as .NET 7/.NET 8 and Swagger/OpenAPI conform seamlessly with my approach – they’ll save time, maintainability and increase project efficiency. In addition, our deployment strategy ensures a robust production-ready solution that caters to scalable needs.
₹25,000 INR in 7 days
0.0
0.0

As a seasoned professional, I have all the skills and experiences required to build the dynamic, metadata-driven API system you are seeking. My long engagement in developing scalable ecosystem solutions is guaranteed to benefit your project. With proficiency in ASP.NET Core Web API (including the use of .NET 7 / .NET 8), SQL Server, Dapper, or Entity Framework Core, I am ready to take on every aspect of your sophisticated project. I have an affinity for clean architecture and repository patterns, an expertise that can help ensure we model your API in a way that is devoid of error and easy to understand. In addition,I have a good grasp of SQL query optimization and security best practices enabling me to prevent SQL injection , mitigate other potential threats and design robust systems. Moreover, I offer more than just impeccable web development skills. My experience working on similar projects with API definitions driven by external databases ensures that your project will be in safe hands. You can rest assured that in my delivery you will receive ALL source codes, database schema for the API Definitions as expected, sample API Configurations in the database, Swagger integration documentation sufficient for adding new APIs dynamically and even a deployment guide with detailed instructions. Steadfastly committed to excellence, I look forward to enhancing your business infrastructure by creating production-ready API functionality that surpasses your highest expectations
₹25,000 INR in 10 days
0.0
0.0

Hi, I’d be happy to work on your project. I have 12+ years of experience in developing customized software tools, web applications, and desktop solutions for both internal teams and external clients. My skills include C, C++, C#, ASP.NET (WinForms & MVC), .NET Core, WPF, Flutter, and database work with MS SQL & MySQL. I’ve also built and integrated RESTful APIs and modern web interfaces using HTML, CSS, Bootstrap, JavaScript, and jQuery. Let’s connect and discuss your requirements further.
₹45,000 INR in 7 days
0.0
0.0

Hi There , **Before we get started I have a few quick questions** 1 : How many API definitions do you expect in phase 1? 2 : Will SQL always be stored procedures, or do you want to support raw queries as well? 3 : Do you want caching (Redis / Memory Cache) for API metadata? 4 : Should authentication be per-API or globally across the engine? 5 : Do you need role-based authorization too? I have previously developed similar platforms where API definitions, SQL queries, parameters, and output shapes were all driven from a SQL Server metadata layer—meaning no code changes were required when new APIs were added. This makes me a strong fit for your project. I work with ASP.NET Core 7/8, SQL Server, Dapper, EF Core, and Clean Architecture, and I follow enterprise-grade API design practices. I can implement a fully dynamic API executor that loads metadata by API code, validates parameters, executes SQL safely using parameterized queries, and returns JSON output while supporting pagination, filtering, and sorting. Security will be handled using JWT / API Key, along with complete logging, exception handling, and SQL injection protection. Looking forward to connecting with you Best regards Sunny
₹25,000 INR in 7 days
0.0
0.0

Hello, I am a working IT professional and Full Stack ASP.NET Developer with strong experience in building production-ready ASP.NET Core Web APIs. I have worked on metadata-driven and dynamic API systems where: • API definitions are stored in the database • Endpoints are executed dynamically using API codes • Parameters are validated at runtime • SQL is executed securely using parameterized queries / stored procedures • JSON responses are generated based on defined output structures For your requirement, I will implement: • POST /api/execute/{apiCode} endpoint • Dynamic API metadata loading from SQL Server • Runtime parameter validation • Secure SQL execution (SQL Injection prevention) • Pagination, filtering, and sorting support • Centralized error handling and structured logging • Authentication using JWT / API Key • Scalable, clean, and production-ready architecture I follow enterprise-level coding standards, clean architecture, and proper separation of concerns. Estimated timeline: 7 days Cost: ₹25,000 INR I can share architecture details or discuss implementation approach if required. Ready to start immediately. Thank you. I can share architecture details or discuss implementation approach if required.
₹25,000 INR in 7 days
0.0
0.0

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