Senior .NET Developer

eTelligent Group LLC · Rockville, MD, US

ContractSeniorPublished Jul 23, 2026

Apply directly on eTelligent Group LLC’s careers site — no account needed.

About the role

Company Overview:

Over the past 15 years, eTel has delivered essential solutions for the federal government by securing and managing data, providing scalable identity access, modernizing legacy systems, and building high-performance platforms. By integrating new technologies and ensuring reliable operations we help agencies stay prepared for future challenges As a premier technology solutions and services company to the US federal government, eTel possesses longstanding relationships across the federal civilian marketplace. Other customers include the broader Treasury Department, Commerce Department, and State Department.


eTel offers integrated CMMI Level 3 processes, tools, and techniques with innovative, cost-efficient, and secure solutions to address complex challenges. eTel also holds ISO 9001:2015, ISO/IEC 27001:2013, and ISO/IEC 20000-1:2018 certifications, and offers dedicated subject matter experts (SMEs) and thought leaders that possess a deep understanding of customers' environments and challenges.

Client: Montgomery County Government

Location: Rockville, MD (The hybrid is two (2) days in the office and three (3) days remote. The remote work location must be in the DMV)

Citizenship: US Citizen (MUST)

Note: This is a 35-hour-a-week assignment with the possibility of hours increasing as budget permits in the future. This is a yearly engagement with an option to renew every year.


Scope of Work:

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-powered solutions.


  • Technical Skills:
  • 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).
  • Analytical and Problem-Solving Skills:
  • Exceptional analytical skills to evaluate data, identify trends, and provide actionable insights.
  • Experience conducting feasibility studies and solution assessments.
  • Expertise in conducting gap analyses.
  • Communication and Interpersonal Skills:
  • 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.
  • Contract staff will work side-by-side with County staff to facilitate knowledge transfer.
  • Contract staff will report directly to TEBS- EPS Manager.


Commitment to Diversity -

eTelligent Group provides equal employment opportunities (EEO) to all applicants without regard to race, color, religion, gender, sexual orientation, gender identity, nations origin, age, disability, genetic information, marital status, amnesty, status as a covered veteran, and any other characteristic provided in accordance with applicable, federal, state and local laws.

Description sourced from the public Indeed listing — this role isn't indexed from the company's career page yet.

Skills

  • C
  • C#
  • JavaScript
  • HTML
  • CSS
  • SQL
  • Azure
  • React
  • Angular
  • GitHub Actions
  • Docker
  • Kubernetes
  • REST
  • GraphQL

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