> Markdown version of [/jobs/ext/1397390-senior-net-developer](https://www.wearedevelopers.com/jobs/ext/1397390-senior-net-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior .NET Developer - **Company:** FEONIX IT SOLUTION LLC - **Location:** Rockville, MD, United States - **Experience:** Expert - **Salary:** $104,000.0 - $114,400.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Artificial Intelligence, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Cloud Engineering, Continuous Integration, Github, SQL Azure, Azure Active Directory, SQL Databases, Systems Integration, .NET Core, GitHub Copilot, ReactJS, Blazor, Prompt Engineering, Software Security, Generative AI, Containerization, AngularJS, Cosmos DB, Api Management, Microservices - **Published:** July 23, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=879df60569521a84 ## About the Role We are seeking a Senior .NET Developer with strong cloud experience to design, build, modernize and support modern applications in Microsoft Azure. The ideal candidate is proficient in .NET Core/.NET 8, C#, and cloud-native architectures, with hands-on experience integrating Azure services such as App Services, Functions, API Management, Service Bus, Azure SQL, Azure OpenAI and AI Foundry, and GitHub Copilot for Developers. The contractor will work with County staff to modernize legacy .NET applications and implement AI-poweredsolutions. 1- : * Expert in C#, ASP.NET Core, and cloud-native development * Strong experience with Azure services, microservices, API security and Microsoft Entra ID/B2C authentication * Experience modernizing .NET Framework/Web Forms applications to .NET 8 or cloud-native architectures * Hands-on experience with Azure AI Foundry, Azure OpenAI, AI agents, Retrieval-Augmented Generation (RAG), prompt engineering, and GitHub Copilot * Proficient with GitHub or Azure DevOps, CI/CD, and containerization * Solid understanding of SQL, Cosmos DB, and modern UI frameworks (Blazor/React/Angular) 2- : * Exceptional analytical skills to evaluate data, identify trends, and provide actionable insights. * Experience conducting feasibility studies and solution assessments. * Expertise in conducting gap analyses. 3- : * Excellent verbal and written communication skills to clearly articulate complex ideas to diverse audiences. * Strong interpersonal skills to effectively collaborate with stakeholders, project teams, and senior leadership. Other Attributes: * Self-motivated and organized, with the ability to manage multiple priorities in a fast-paced environment. * A proactive mindset with a focus on driving results and achieving project goals. * Strong attention to detail and commitment to delivering high-quality work. 4- Contract staff will work side-by-side with County staff to facilitate knowledge transfer. ## Related Videos - [Building Multi-Tenant ASP.NET Core Applications: Best Practices and Real-World Solutions](https://www.wearedevelopers.com/videos/1552-building-multi-tenant-asp-net-core-applications-best-practices-and-real-world-solutions) - [Blazor Unleashed: The Future of .NET Web Development](https://www.wearedevelopers.com/videos/1564-blazor-unleashed-the-future-of-net-web-development) - [WeAreDevelopers LIVE – AI, Freelancing, Keeping Up with Tech and More](https://www.wearedevelopers.com/videos/1786-wearedevelopers-live-ai-freelancing-keeping-up-with-tech-and-more) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Blazor – the new SPA Framework for everyone who hates JavaScript](https://www.wearedevelopers.com/videos/699-blazor-the-new-spa-framework-for-everyone-who-hates-javascript) - [Blazor and Azure functions for Serverless Website](https://www.wearedevelopers.com/videos/115-blazor-and-azure-functions-for-serverless-website) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)