> Markdown version of [/jobs/ext/3451225-sr-net-developer-ii](https://www.wearedevelopers.com/jobs/ext/3451225-sr-net-developer-ii). 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). --- # Sr. .Net Developer II - **Company:** Eliassen Group - **Location:** Reston, VA, United States - **Experience:** Expert - **Salary:** $145,000.0 - $165,000.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, Microsoft Word, .NET Framework, Microsoft Excel, Microsoft Windows, Active Directory, Application Programming Interfaces (APIs), Artificial Intelligence, Server Applications, ASP.NET MVC Framework, Microsoft Outlook, C Sharp (Programming Language), Code Review, Continuous Integration, Programming Tools, Entity Framework, Design of User Interfaces, Microsoft Office, Microsoft SQL Server, Node.Js, Operational Data Store, Power BI, Microsoft SharePoint, Web Services, Enterprise Software Applications, Microsoft Power Automate, GitHub Copilot, ReactJS, Delivery Pipeline, Software Security, Git, Microsoft Onedrive, SC Clearance, Information Technology, Low-code, Software Coding, Restful APIs, Powerapps - **Published:** September 1, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3373851394&tx=IT8881TTV&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role * Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent experience. * Active Secret clearance and local to the DMV area with the ability to support onsite requirements in Washington, DC. * 8+ years of progressive .NET development experience (C#, ASP.NET MVC, ASP.NET Core) with senior engineering or technical lead responsibilities. * Proven architecture and technology selection experience for enterprise applications with the ability to articulate decisions and tradeoffs. * Proficiency in React including hooks, component design, state management, and responsive UI development. * Experience developing server-side applications or APIs with Node.js. * Professional use of AI-powered developer tools such as GitHub Copilot, OpenAI Codex, or similar assistants. * Hands-on experience with Microsoft Power Platform including Power Apps, Power Automate, and Power BI, with sound judgment on low-code suitability. * Working knowledge of Microsoft Dataverse including data modeling, table configuration, relationships, and security roles. * Experience supporting or modernizing SharePoint-backed systems across SharePoint Online and SharePoint 2013 or newer. * Deep experience with MS SQL, Entity Framework, and RESTful API design and consumption. * Experience establishing or maturing CI/CD pipelines and deployment workflows with strong Git fundamentals. * Experience leading code reviews, setting coding standards, and mentoring developers. * Strong understanding of application security concepts, Active Directory, and identity and access patterns in enterprise environments. * Familiarity with Microsoft 365 and Office including SharePoint Online, Teams, Outlook, Excel, Word, and OneDrive. * Excellent communication skills with the ability to present technical recommendations to engineering teams and non-technical stakeholders. * Ability to work onsite in a federal environment, including occasional Saturday hours for deployment activities. Education Requirements: Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent experience. ## Description As Sr. .Net Developer II, you will serve as a senior full-stack engineer and technical lead, building and modernizing enterprise applications using .NET and React while driving architecture, development standards, tooling decisions, and engineering best practices. You will design APIs and services, integrate solutions across Microsoft 365, SharePoint, Teams, and the Power Platform, lead AI-enabled modernization initiatives, establish CI/CD processes, mentor developers, conduct design and code reviews, and collaborate with stakeholders to deliver secure, scalable, and reliable solutions., * Serve as the trusted primary point of contact for stakeholders submitting requests, delivering a responsive, professional, and customer-first experience. * Review and triage incoming intake requests, assessing scope, priority, complexity, and completeness, and follow up with customers to clarify objectives and gather missing information. * Elicit, document, and translate customer business needs into clear, well-structured requirements that delivery teams can act on. * Route requests to the appropriate solutions architects and analysts to engage the right resources for the best response, recommendation, or proposal. * Coordinate across solutions architects, analysts, and development teams to shepherd each request from submission through proposed solution, tracking status and removing roadblocks. * Communicate status, timelines, and proposed solutions back to customers in clear, non-technical language, managing expectations throughout the engagement lifecycle. * Monitor intake volume, response times, and engagement metrics; identify trends, recurring needs, and opportunities to streamline the intake-to-delivery process. * Refine and continuously improve workflow, triage criteria, and routing logic based on customer feedback and operational data. * Maintain accurate records of customer interactions, requirements, decisions, and outcomes to support transparency, reporting, and program governance. * Build and sustain strong working relationships with customers and internal delivery teams, advocating for the customer while balancing program priorities. ## Related Videos - [Stop using Node.js like in 2020! 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