.NET Web Apps & API Development

@hardikshah83

Fit: Hands-on experience across C#/ASP.NET Core, systems integration, and vendor/client-facing web applications — comfortable owning both new feature work and legacy maintenance on a Microsoft-stack platform. What I bring to this role: ASP.NET MVC + .NET 8 development — extending existing services and building new, well-documented, unit-tested REST/Web API endpoints SQL Server and PostgreSQL query optimization (T-SQL/PL-pgSQL), with attention to performance under realistic load Excel programmatic import/export (via libraries like ClosedXML/EPPlus) mapped cleanly to domain models — a workflow I've built before and take seriously given how error-prone Excel interchange can get jQuery/Kendo UI front-end work alongside backend changes XML/JSON data interchange handling Azure deployment pipelines — build/deploy/rollback scripting, plus post-release monitoring for SLA-critical services Debugging, legacy refactoring, and security-hardening with clean, reviewable release notes Working style: I diagnose before I refactor — tracing root causes in legacy code rather than patching symptoms — and keep changes incremental and well-documented so deployments stay predictable. Availability: Ready to start promptly; comfortable with ongoing engagement balancing new endpoints, performance work, and production support.

@vishal1145

Your Azure-hosted .NET 8 services will struggle under concurrent Excel processing if you're loading entire workbooks into memory instead of streaming rows. This creates out-of-memory exceptions during peak import hours and kills your SLA uptime. Quick questions - are you currently using EPPlus or ClosedXML for Excel manipulation, and what's your target response time for API endpoints under 500 concurrent requests? Here's the architectural approach: - .NET 8 WEB API: Refactor existing MVC controllers into minimal APIs with rate limiting middleware and structured logging via Serilog to catch bottlenecks before they hit production. - SQL SERVER + POSTGRESQL: Rewrite N+1 query patterns using compiled LINQ expressions and add covering indexes on foreign keys to drop query time from seconds to sub-200ms. - EXCEL AUTOMATION: Build streaming parsers with OpenXML SDK that process 100K-row files in chunks without loading full datasets, preventing memory spikes during bulk imports. I've maintained similar hybrid-cloud .NET platforms for 3 fintech clients processing 2M transactions monthly. Let's schedule a 15-minute call to review your current pipeline configuration and identify the highest-impact optimizations.

@GediminasB

I am an old certificated .NET/C# programmer working with .NET for 25 years. I have been using all the programming tools mentioned in your project for a long time, but I do not have a Kendo UI license. I will test the project using DevCraft Trial if you don't provide me with your Kendo UI version. I live in Lithuania (+2GMT). Human languages: Lithuanian (native), English, Russian (at mother tongue level).

@ParasTech7

Hi, I’m a Principal-level Software Engineer with 21+ years of experience building and maintaining production-grade applications across .NET, C#, SQL Server, PostgreSQL, Azure, REST APIs, and enterprise systems. I can take ownership of your existing applications, including **.NET 8/MVC development, API design, SQL optimization, Excel automation, legacy refactoring, debugging, security, and Azure deployments**. I’m comfortable working across both application and database layers and supporting production systems under SLA requirements. I focus on clean architecture, measurable performance improvements, reliable deployments, and maintainable code. I’m available to start immediately and would be happy to review your existing architecture and priorities.

@ganeshrasekar

As you seek a highly experienced and dedicated .NET engineer, I submit my name for your consideration. With extensive proficiency in C# programming, ASP.NET development, and proven skills in working with SQL Server and PostgreSQL, I am ready to take on full ownership of your production-grade web applications. I’m well versed with the .NET Core/.NET 8 stack which ensures a seamless transition between your existing technologies and the new ones, making me an invaluable asset for your project. My ability to diagnose and resolve bugs gives me a sharp edge in refactoring legacy code while my experience with Azure cloud hosting ensures successful deployment from test to production environment. Moreover, I have comprehensive knowledge in using XML and JSON for data interchange along with excel-based workflows—key requirements as outlined in your project description.

@vinod150987

Hi, I’m a seasoned .NET engineer with strong experience building, maintaining, and supporting production-grade web applications using C#, ASP.NET MVC, .NET Core/.NET 8, Web API, and SQL Server. I can take full ownership of your applications, from developing REST APIs and optimizing backend/database performance to diagnosing production issues and refactoring legacy code. I’m comfortable working across SQL Server and PostgreSQL, Azure environments, jQuery, Kendo UI, and XML/JSON integrations. I also have solid experience with programmatic Excel processing, including structured file workflows and data validation. I can handle the complete development lifecycle—from requirements and implementation through testing, deployment, monitoring, and production support. My focus is clean, maintainable code, efficient database queries, reliable releases, and keeping SLA-critical services stable and performant. Regards

@Appworldz

Hi, I’m Sahanaj. I’ve owned production ASP.NET MVC/.NET 8 applications where API development, legacy refactoring, SQL performance and reliable releases all happen together—not in separate silos. I can handle C#/.NET 8 REST APIs, SQL Server/PostgreSQL optimization, XML/JSON integrations, programmatic Excel import/export, jQuery/Kendo UI, Azure deployments and production troubleshooting. I’ll unit-test endpoints, validate queries against realistic loads, and keep deployments rollback-ready through Azure pipelines. Rate: ₹2,500/hr Availability: 20 hrs/week Start: Immediate Give me the current backlog and one performance-critical issue—I’ll show you quickly how I approach production problems.

@mriganka123

Hi, Im comfortable taking full ownership of existing systems, from understanding legacy code and fixing bugs to delivering new features, optimizing performance, and supporting production releases. With 14+ years of experience Ive built REST APIs, optimized C# and SQL performance, refactored legacy applications, handled XML/JSON integrations, and worked with Excel import/export workflows, also experienced in production troubleshooting, third-party API integrations, CI/CD deployments, monitoring, and ongoing application support. My expertise includes C#, ASP.NET MVC, Web API, .NET Core/.NET 8, SQL Server, Entity Framework, Dapper, JavaScript/jQuery, IIS, and Git. Thanks, Krish

@ashiruddin

I read your project description carefully and have a great interest in your project. I'm very familiar with Asp.net core, React.js, Node.js, C# & VB.NET, MS SQL , My SQL, MS Access I have a deep understanding and 20 years experience in C# ,VB and ASP.NET, and previously have developed a lot of programs. So, I can implement your request successfully in time. If you hire me, I'll do my best for you. I can start right now, please ping me.

@Cumuc

Hi, I can take ownership of your production .NET applications across development, maintenance, performance optimization, and deployment. I have strong experience with C#, ASP.NET MVC, .NET Core/.NET 8, Web API, SQL Server, PostgreSQL, Azure, and production-grade backend systems. I can develop and document REST APIs with proper validation, unit tests, error handling, and maintainable architecture. For database work, I’ll optimize T-SQL and PL/pgSQL queries based on realistic workloads rather than relying only on theoretical improvements. I can also build reliable Excel import/export workflows that map cleanly into your existing domain models and business logic. For legacy areas, I’ll focus on safe refactoring and incremental improvements without disrupting existing production behavior. I’m comfortable troubleshooting complex issues across C#, databases, jQuery/Kendo UI, XML/JSON integrations, and Azure environments. I can also improve CI/CD pipelines, deployment scripts, rollback procedures, monitoring, and production reliability. I’m available for long-term ownership and ongoing SLA-focused support, not just individual feature delivery.

@saurabhrathi31

Hi, I’m an experienced .NET engineer with strong hands-on expertise in C#, ASP.NET MVC, .NET Core/.NET 8, Web API, SQL Server, PostgreSQL, and Azure. Kindly let me know if we can work together. Many thanks

@KarthikTechCon

Hello, I’m Karthik, a .NET engineer with over 15 years of experience in delivering high-quality web applications and APIs. I have a strong background in C#, ASP.NET MVC, .NET Core/.NET 8, and SQL Server, alongside hands-on experience with PostgreSQL and Azure environments. I excel in expanding existing applications, building and optimizing REST endpoints, and enhancing performance at both the code and database levels. My expertise includes: - Creating and documenting new REST APIs, ensuring comprehensive unit testing. - Designing efficient T-SQL and PL/pgSQL queries that perform well under load. - Developing robust Excel import/export modules tailored to existing domain models. - Implementing performance and security enhancements with clear documentation for each release. - Managing Azure pipelines for seamless deployment and rollback processes. I’m committed to maintaining SLA-critical services and have a proven track record of diagnosing bugs, refactoring legacy code, and providing support post-launch. I’m enthusiastic about balancing feature development with ongoing maintenance. Let’s discuss how I can contribute to your project! Best, Karthik

@softwarelinkerrs

As a seasoned .NET engineer with a comprehensive understanding of the entire Microsoft technology stack, including C#, ASP.NET MVC, .NET Core/.NET 8, Web API, and SQL Server, I believe I'm the ideal candidate for your project. I have extensive experience in expanding and maintaining production-grade web applications, which includes refining performance at both the C# and database levels. In addition to my proficiency with XML and JSON data interchange, I also possess the crucial skill of manipulating structured Excel files programmatically. At SoftwareLinkers, we pride ourselves on our ability to deliver secure and scalable digital systems tailored to our clients' needs. With a proven track record in upholding high SLAs and ensuring system health post-deployment, you can trust that your critical workflow will be treated with the utmost care. My team's expertise extends beyond design and development; we provide long-term technical support and maintenance to ensure the continued success of your applications. Finally, with a long list of satisfied clients across industries – from Education & eLearning to Insurance & Finance – complemented by consistent high ratings from past employers, I am confident that I can meet all the key deliverables for your project. Regards Nitin

@alluankit01

Hi, I can support your production .NET web apps by extending ASP.NET MVC/.NET 8 services, building REST APIs, optimizing SQL queries, handling Excel import/export, fixing bugs, and improving deployment reliability. My approach will be to first review the existing codebase, APIs, database schema, Excel workflows, Azure setup, and current performance issues. Then I’ll implement clean C# changes, document endpoints, add unit tests where needed, tune SQL Server/PostgreSQL queries, and prepare clear release notes. I’m comfortable with C#, ASP.NET MVC, .NET Core/.NET 8, Web API, SQL Server, PostgreSQL, Azure, jQuery, Kendo UI, XML/JSON integrations, Excel processing, legacy refactoring, performance tuning, and production support. Deliverables: * New/updated REST API endpoints * Unit-tested C# code * SQL Server/PostgreSQL query optimization * Excel import/export modules * Bug fixes and refactoring * Performance/security improvements * Azure deployment scripts/pipeline support * Release notes and documentation I’ll focus on stable production-ready delivery, clean code, optimized database access, and reliable deployment support. Best regards Ankit

@Dinfo12

Hi, With over 8 years of coding experience in .net, a significant portion devoted to ASP.NET and Microsoft SQL Server, I am confident in my ability to meet and exceed your project requirements. I understand the unique challenges and demands the .NET stack presents, and I have the proficiency you need to tackle them. My technical skills extend well beyond ASP.NET—I'm also comfortable with .NET Core/.NET 8, Web API, jQuery, Kendo UI widgets—complementing your technology toolkit perfectly. Moreover, I bring along immense exposure to real-world production environments and troubleshooting; something that will be particularly useful for fixing bugs, diagnosing issues and optimizing performance—a crucial aspect of your project description. I would also like to add that my background includes working with structured Excel files, making me adept at programmatically manipulating them. This hands-on experience aligns nicely with your requirement for handling critical workflows involving Excel. Best Regards Ashish

@sumitwebrainbows

With over a decade of experience in .NET and Microsoft technologies, I am confident that my skills align perfectly with your project requirements. Having shipped multiple applications leveraging C#, ASP.NET MVC, .NET Core, and Web API development, I am well-versed in tackling the complexities of production-grade web applications. Also, my deep understanding of SQL Server alongside experience with PostgreSQL and Azure adds value to managing database queries efficiently while assuring SLA-critical services stay healthy. One specific skill you're looking for is excelling at Excel - I've got you covered. Not only can I seamlessly manipulate structured Excel files but also ensure that the workflow integrates smoothly with the existing domain models. Beyond just delivering results, what defines me as a professional is my dedication towards ongoing maintenance to keep growing applications sustainable. Alongside consistent feature enhancement, I take pride in refactoring legacy codes to improve their performance and scalability. As you mentioned balancing new features with maintenance being a critical aspect of this role, I assure you my commitment to this responsibility will ensure your project is high-functioning yet adaptable for inevitable changes ahead. Let's discuss further and potentially collaborate!

@mikes126

Hi there, let's have short meeting if you wanna discuss the project and your current setup. I’m a .NET engineer experienced with C#, ASP.NET MVC, .NET Core/.NET 8 and REST APIs. I can take ownership of existing apps, build and unit-test new endpoints, debug production issues, and refactor legacy code without breaking existing flows. I’m also comfortable with SQL Server and PostgreSQL query optimization, JSON/XML data handling, Excel import/export, and Azure deployments. For performance issues, I focus on finding the actual bottleneck in C#, DB queries, or API flow instead of applying random fixes. I can also help with CI/CD, release/rollback scripts, security fixes, monitoring, and production support. Budget: $350 Timeline: 7 days

@dhyanmoradiya

Hi, I’m Dhyan Moradiya, a skilled professional specialized in ASP.NET MVC, ASP.NET Core MVC, Blazor, and .NET Core Web API, having experience working with cloud solutions like EC2, S3, SNS, SQS, and Lambda for various functionalities. I'm excited to help with your project. I have worked on CRM, ERP, E-Commerce, and restaurant management apps, ensuring smooth functionality, user-friendly design, and bug-free code. Here’s why I'm the right choice: Proven experience with ASP.NET 4.8-6-7-8-9-10, database management, SQL Server, Payment Integration, APIs, Email, OTP, and security. Familiarity with scalable solutions for apps similar to yours. Timely delivery without compromising on quality. Let’s connect to discuss your requirements in detail. I'm eager to understand your vision and create an app that exceeds expectations. Looking forward to hearing from you! Best regards, Dhyan Moradiya

@iterativeTech

As a highly experienced AI & Cloud Data Engineering Specialist, I may bring a different skill-set to your table, but that's what makes me uniquely qualified for this project. My expertise in handling and optimizing data using complex systems such as SQL Server, Python, Azure, and AWS, combined with my knack for building scalable architecture aligns closely with what you're seeking. I've built and maintained production-ready systems for diverse sectors like finance, healthcare, and insurance ensuring operational efficiency and smarter decision-making, which are qualities you value too. Though your project involves .NET Core/.NET 8 services, Web API and Azure pipelines - areas that I am well-versed in - it is the Excel import/export modules that peaked my interest. Given the importance of structured Excel files in your workflow, my solid experience manipulating Excel programmatically could be a real asset. Having used tools like Power BI and Tableau extensively, I am confident I can design an efficient system that maps seamlessly to your existing domain models.