Software Engineer

Xcelerate Solutions; Quantico (VA); Hybrid; USD 150,000 - 190,000; Full time

Job summary

Xcelerate Solutions is seeking a SME Software Engineer with leadership in migrating Windows ASP.NET to cross‑platform ASP.NET Core, focused on secure full‑stack development for DoD environments. The role is hybrid, with occasional on‑site work at Quantico, VA, and requires Top Secret clearance with SCI eligibility.

Responsibilities include migrating applications to Linux‑based containers, guiding architecture and secure coding practices, and coordinating across Linux and Windows stacks while

Qualifications

• Active Top Secret with SCI Eligibility.
• 10+ years of experience in software engineering across Linux and Windows.
• ASP.NET Core and .NET Framework expertise.
• Experience with self-hosted artifact repositories (Artifactory/Nexus/NuGet).
• Ability to guide Mission Application developers on architecture and secure development standards.

Responsibilities

• Assist Mission Application developers with migrating Windows ASP.NET to Linux-based ASP.NET Core for Linux runtimes.
• Serve as SME for secure full-stack development across Linux and Windows.
• Design, develop, integrate, and maintain ASP.NET Core and .NET Framework apps with secure practices.
• Develop and support apps across relational and NoSQL databases for scalability and security.
• Apply software engineering principles across languages, OS, frameworks, and hosting environments.
• Configure and maintain artifact repositories (Artifactory/Nexus/NuGet) to support secure development.
• Provide guidance on architecture, coding practices, integration, interoperability and security standards.
• Promote reusable components and interoperable solutions across mission applications.
• Evaluate emerging technologies to address evolving mission needs while maintaining security.
• Troubleshoot complex issues across heterogeneous environments.
• Collaborate to establish secure, scalable software solutions within DoD environments.

Skills

Secure software development

Full-stack development

ASP.NET Core

.NET Framework

Linux and Windows

Relational and NoSQL databases

Software engineering principles

Guidance to developers

Education

Master's Degree or equivalent experience

Tools

Artifactory/Nexus/NuGet

Job description

SME Software Engineer (Porting/Migration & ASP.NET Core Specialist) – TS

Xcelerate Solution is seeking a SME Software Engineer with experience with designing patterns and secure software development. Come join our award-winning organization and work with some of the most talented and brightest minds in the GovCon industry.

Locations:

Hybrid with occasional on-site at (Quantico, VA)

Clearance:

Top Secret with SCI eligibility

Responsibilities:

• Assisting Mission Application developers with migrating existing applications to the Linux environment for execution on Linux-based IronBank hardened containers, including transition from Windows-based ASP.Net technologies to cross-platform ASP.NET Core technologies suitable for the Linux runtime environment.
• Serve as a Senior Software Engineering SME supporting secure full-stack application development across Linux and Windows environments.
• Design, develop, integrate, and maintain ASP.NET Core and .NET Framework applications using secure software development practices.
• Develop and support applications across relational and NoSQL database environments, ensuring scalability, security, and interoperability.
• Apply software engineering principles across compiled and interpreted programming languages, operating systems, application frameworks, and diverse hosting environments.
• Design, configure, and maintain self-hosted artifact repositories such as Artifactory, Nexus, NuGet, or similar platforms to support secure software development and deployment.
• Provide technical guidance to Mission Application developers on application architecture, coding practices, integration, interoperability, and secure development standards.
• Support the adoption of common development patterns, reusable components, and interoperable solutions across mission applications and technology stacks.
• Evaluate and integrate emerging technologies and development tools to address evolving mission requirements while maintaining security and operational standards.
• Troubleshoot complex application, database, integration, and deployment issues across heterogeneous environments.
• Collaborate with engineering and development teams to establish secure, scalable, maintainable, and sustainable software solutions within DoD environments.

Minimum Requirement:

• Active Top Secret with SCI Eligibility
• Expertise in Secure Software Development across a full-stack domain, including database (relational and NoSQL) and application development (compiled and interpreted languages) in both Linux and Windows environments
• ASP.NET Core Software Development
• .Net Framework Software Development
• Expertise with self-hosted artifact repositories such as Artifactory/Nexus/NuGet/etc
• Must be comfortable applying software engineering principles to disparate languages, operating systems, and hosting environments holistically, learning new technologies as needed to support emergent mission needs, and providing guidance to Mission Application developers to build a culture of interoperability regarding sustained implementation of such objectives.
• 10+ Years of experience
• Master’s Degree or equivalent experience,
• Active Certified in DOD 8570/8140 IAT Level II or III

Preferred Qualification:

• Experience with Kendo/Telerik controls, familiarity with Scrum/Agile practices, expertise with ASP.Net MVC, and/or experience with System.
• Web based identity concepts (including Session management and X509-derived claims)

About Xcelerate Solutions:

Founded in 2009 and headquartered in McLean, VA, Xcelerate Solutions ( is one of America's fastest-growing companies. Xcelerate’s culture is defined by our diversified workforce of dynamic and versatile professionals, supported with growth and development opportunities that contribute to individual and company growth. This strong commitment to our employees has been recognized by our inclusion on the Washington Business Journal’s “50 Best Places to Work” list as well as being a “Great Place to Work” certified company with a 4.6 star, and a 99% CEO approval Glassdoor rating. Come find out why Xcelerate Solutions is one of the top DC Metro employers!

Xcelerate Solutions is an Equal Employment Opportunity/Affirmative Action Employer. We evaluate qualified applicants without regard to race, color, national origin, religion, age, equal pay, disability, veteran status, sex, sexual orientation, gender identity, genetic information, or expression of another protected characteristic. As part of this commitment to the full inclusion of all qualified individuals, Xcelerate provides reasonable accommodations if needed because of an applicant's or an employee's disability.

Pay Transparency Notice: Xcelerate Solutions will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant.

Company Description

Xcelerate is a leading defense and national security company, delivering integrated solutions across five service areas—Enterprise Vetting & Analysis, Critical Infrastructure Protection, Digital Solutions, Cyber Security, and Strategic Consulting. We are a trusted partner to the Department of Defense, Department of Homeland Security, numerous law enforcement and civilian agencies, and the Intelligence Community. Our customers are directly responsible for the security and safety of the United States.

Company Description

Xcelerate is a leading defense and national security company, delivering integrated solutions across five service areas—Enterprise Vetting & Analysis, Critical Infrastructure Protection, Digital Solutions, Cyber Security, and Strategic Consulting. We are a trusted partner to the Department of Defense, Department of Homeland Security, numerous law enforcement and civilian agencies, and the Intelligence Community. Our customers are directly responsible for the security and safety of the United States.