Find top freelance .NET developers quickly and easily on Codementor. Work with our vetted developers who have the proven skills and experience to get the job done. Get help with projects by-the-hour or long-term. Hire a trusted .NET freelancer on Codementor today.
I have a great passion for solving problems and can help people with various programming languages, databases, information systems, software related projects.
* 15+ years of experience in software development.
* 7 years of building apps with NodeJS, React and Angular.
* 5 years of hands-on work with cloud-based.
* Solid background in computer science and software development.
* Proficient in important practices like Clean Code, Refactoring, Test Automation, and CI/CD.
* Exceptional at solving problems and learning new technologies quickly.
I help developers and product teams solve difficult .NET backend problems, improve architecture, and turn prototypes into secure, production-ready applications.
I have 14+ years of software engineering experience, including technical leadership, ASP.NET Core, C#, EF Core, distributed systems, Clean Architecture, DDD, cloud deployment, and AI/LLM integration.
I can help with:
• Debugging complex .NET and backend issues
• Architecture and code reviews
• Refactoring AI-generated or legacy code
• ASP.NET Core APIs, authentication, and EF Core
• MCP, RAG, LLM APIs, and AI-agent integration
• System design and production-readiness reviews
• CV, GitHub, interview, and career mentoring for .NET developers
My sessions are practical and outcome-focused: we inspect the real problem, identify the root cause, implement or plan the solution, and leave you with clear next steps.
I'm Tom, an AI SaaS founder with 8+ years across Python, Go, Java, JavaScript, and C#. I've run 800+ mentoring sessions with a 5.0-star rating across 53 reviews.
I mentor hands-on: we look at your actual code, find what's broken, and fix it together. No hand-waving, no generic "just use AI" advice.
What I help with: AI/LLM app development (integrations, agents, automation), Python and Go debugging and architecture, dev-to-AI career transition, and indie hacker / SaaS building. Currently building an AI tool for X/Twitter growth in public, day 200+.
I am a Software Engineer with over twenty years of experience in Swift, SwiftUI, React, J2EE, Java, JavaScript, XML, SQL, Oracle, JDBC, Swing, HTML, JSF, and other web & mobile development technologies. Within the last three years I've been very involved in learning, developing, and publishing mobile applications in Android, Blackberry, and iOS using both native and cross platform development. I plan to invent a new technology or useful device in the future as my long term goal that will be used in a person's everyday life but I am still working on ideas. I also hope to make something of my own business, Smartware Design LLC, working as a technical software consultant on side projects for non-profits and small businesses.
Specialties: Java, JavaScript, J2EE, Oracle SQL, AJAX, HTML, JSP, JSF, JBoss, RichFaces, JSTL, XML, Android, Blackberry, J2ME, iOS (XCode), iPhone, iPad, Xamarin, Appcelerator, Ionic Framework, PhoneGap, webMethods IS, MWS, Cisco Call Studio, Oracle MapViewer, Spring, OC4J, Struts, WebSphere, Web Services, SVN, PVCS, CVS, Git, UML, MS Office, Access, Visio, Dreamweaver, PHP, Linux/Unix, Mac OS X, and lately, Python/Django & Swift
Please contact me at [michael@smartwaredesign.com](mailto:michael@smartwaredesign.com) for help with your WordPress website or mobile application development needs. I'm available for consultation and can be booked through my website at [smartwaredesign.com](http://smartwaredesign.com/) to solve your technical concerns.
Hello! My name is Yogi Grantz and I began my career in software development long before the era of .net as a mainframe programmer for the State of Ohio. I then worked for the San Diego County Office of Education in 2003, when object oriented programming and .net framework just started to bloom. Since then, I have grown significantly as a developer and I am now working intensely with various types of .net 6 & .net 8 solutions: class libraries, console, winform, mvc, webapi, razor, blazor, and started R&D in .net MAUI. I have developed many algorithms and architecture components such as class library, sample code, proof of concept, and prototypes. I have also upgraded and optimized a number of legacy c# applications, completed several full stack applications, as well as a number of utilities.
I hold Master of Science degrees in Aerospace Engineering and Industrial Engineering from Mississippi State University. I love to solve problems and create algorithms and functionalities. I hope to contribute my expertise to help those who are developing c#-based software.
Accomplished innovative System Engineer with more than 10-years-experience working with
multidisciplinary teams and technologies building enterprise solutions for private sectors.
Provide expertise and services at all levels of execution, assuming high levels of responsibility
for their delivery.
Have performed the roles of Software Developer and Front End Technical Lead for numerous projects
requiring the execution of all aspects of design and development of new value added to
software solutions. Most of the projects were related to health care.
Really proactive and learning spirit. I like working in groups because of the synergy in them.
Skills and knowledge essential for solving problems and improvements.
As a Sr. Test Automation Engineer and Technical Lead with about 10 years of experience in the IT space, I have a deep understanding of Claude Code, AI Agent Platforms, AI Harnesses, Quality Assurance, Back-End Programming, and Continuous Testing. With my expertise in designing and implementing sophisticated testing frameworks, I am skilled in both manual and automated testing and have a keen eye for identifying areas for improvement and optimization.
Above all, I am passionate about empowering individuals to succeed and creating a culture of excellence and innovation, where Continuous Testing is integrated into every stage of the agile software development life cycle.
I've been lucky enough to work for several enterprise-level clients in a wide diversity of domains, including entertainment, banking, finance, and e-commerce. Top quality is always expected, and keeping up with trends is a must.
Senior Software Engineer with 8 years of experience building backend applications and enterprise software.
Experienced in Java, Spring Boot, Microservices, REST APIs, System Design, and Distributed Systems. Worked on scalable applications, performance optimization, production support, and software architecture.
Currently working at Microsoft, contributing to the WPF framework and leading initiatives around modernization, automation, accessibility, and performance improvements.
Previously worked at Siemens Healthineers building backend services and APIs for medical imaging systems.
Skilled in designing reliable, scalable, and maintainable software solutions while collaborating with cross-functional teams.
Core expertise:
• Distributed Systems & Microservices
• System Design (HLD + LLD)
• Java, Spring Boot, C#, .NET, [ASP.NET](http://asp.net/)
• REST APIs & Backend Engineering
• Performance Optimization & Scalability
• Concurrency, Reliability, and Production Debugging
• CI/CD and Release Engineering
Conducted 50+ design/code reviews and contributed to engineering best practices across teams.
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Frequently asked questions
How long do .NET projects normally take?
The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance .NET project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance .NET request on Codementor, check out our article.
How much does it cost to hire a freelance .NET developer?
We don’t charge anything when you post a freelance hiring request for .NET developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.
What makes Codementor .NET developers different?
We do a comprehensive technical and communications screen of all .NET developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing .NET developers’ user satisfaction rates.
What happens if I’m not happy with the freelancer’s work?
As a platform, we strive to ensure you’re always happy with your .NET project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.
For more answers to frequently asked questions, see here.