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Open nowPosted 3 days ago

Senior .NET Developer

Koniag Government Services, LLC396 open roles

Where
Washington, DC, USA
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Your applicationOpen nowSenior .NET DeveloperKoniag Government Services, LLC · Washington, DC, USA

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The clock on this job

Early applications get read.

12.3% of postings close within 7 days. Measured by our own scanner across the market. Koniag Government Services, LLC postings stay open a median of 20 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.5%3 days
  3. 12.3%7 days
  4. 19.3%14 days
  5. 35.6%30 days
  6. 57.8%60 days
This job: posted 3 days ago

Koniag Government Services, LLC median: 20 days open

The posting

This position may be filled prior to the posted deadline. Interested candidates are encouraged to apply as soon as possible. Koniag Emerging Technologies, LLC a Koniag Government Services company, is seeking a Senior .Net Developer with a Secret security clearance to support KET and our government customer in Washington, DC. This is a hybrid position requiring 1 day onsite per week in Washington, DC. Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement. The successful candidate will lead the Design, development, and implementation of software solutions using .NET Framework, ASP.NET Web API, Angular, and Oracle and will lead the operations and maintenance (O&M) of a Federal HR position classification application. The candidate will support and lead (as needed) new AI-assisted development, including tools that analyze position descriptions and support classification decisions. Responsibilities: • Maintain, enhance and troubleshoot applications across its full stack: .NET Framework, ASP.NET Web API, Angular, and Oracle• Develop and maintain enterprise ASP.NET Web APIs that serve the classification application and related HR applications • Support integration with PeopleSoft HR data (organizational hierarchies, position and locality data) • Maintain automated regression tests (e.g., Playwright) and technical documentation for the application stack • Prepare Implementation guides and technical documentation• Maintain and upgrade the Duende IdentityServer (security token service) host, including OAuth 2.0 / OpenID Connect clients, scopes, and certificates • Design and build AI-assisted applications in .NET, such as tools that analyze position descriptions and support classification determinations Required Qualifications:• Active Secret security clearance (U.S. citizenship required) • Bachelor's degree in Computer Science or related field; 4 additional years of experience in lieu of degree • Minimum of 7 years of total software development experience, including at least 6 years in .NET development with strong proficiency in C#, ASP.NET (Web Forms, MVC, and Web API), and both .NET Framework and modern .NET • Experience designing and building enterprise ASP.NET Web APIs secured with OAuth 2.0 / OpenID Connect • Working knowledge of Oracle databases and SQL, including ODP.NET or Entity Framework with Oracle • Demonstrated experience building or integrating AI features in applications (LLM APIs, agents, or similar)• Experience using GitHub Copilot or a similar AI coding assistant, and experience using AI for regression testing • Experience using Azure DevOps for Git source control, build and release pipelines, and deployments • Experience supporting production applications: troubleshooting, root-cause analysis, and fixes under change control • Familiarity with JavaScript, HTML, and CSS • Strong problem-solving, communication, and interpersonal skills Preferred skills and experience:• HR knowledge, especially federal HR: OPM position classification, GS grades, position descriptions • Experience with Duende IdentityServer, token-based authentication, and single sign-on • Experience with Angular (standalone components, reactive forms, RxJS) • Experience building MCP servers, multi-agent systems, or Azure OpenAI / Microsoft AI solutions in .NET • Experience with performing automated testing with Playwright, xUnit, or similar tools Our Equal Employment Opportunity Policy: The company is an equal opportunity employer. The company shall not discriminate against any employee or applicant because of race, color, religion, creed, ethnicity, sex, sexual orientation, gender or gender identity (except where gender is a bona fide occupational qualification), national origin or ancestry, age, disability, citizenship, military/veteran status, marital status, genetic information or any other characteristic protected by applicable federal, state, or local law. We are committed to equal employment opportunity in all decisions related to employment, promotion, wages, benefits, and all other privileges, terms, and conditions of employment. The company is dedicated to seeking all qualified applicants. If you require an accommodation to navigate or to apply to a position on our website, please contact Heaven Wood via e-mail at [email protected] or by calling 703-488-9377 to request accommodations. Koniag Government Services (KGS) is an Alaska Native Owned corporation supporting the values and traditions of our native communities through an agile employee and corporate culture that delivers Enterprise Solutions, Professional Services and Operational Management to Federal Government Agencies. As a wholly owned subsidiary of Koniag, we apply our proven commercial solutions to a deep knowledge of Defense and Civilian missions to provide forward leaning technical, professional, and operational solutions. KGS enables successful mission outcomes for our customers through solution-oriented business partnerships and a commitment to exceptional service delivery. We ensure long-term success with a continuous improvement approach while balancing the collective interests of our customers, employees, and native communities. For more information, please visit www.koniag-gs.com. Equal Opportunity Employer/Veterans/Disabled. Shareholder Preference in accordance with Public Law 88-352

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