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# Principal Cyber Software Engineer / Sr. Principal Cyber Software

- **Company:** Northrop Grumman
- **Location:** Chantilly, VA, United States
- **Experience:** Expert
- **Salary:** $125,300.0 - $187,900.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, .NET Framework, Microsoft Windows, Agile Methodology, Microsoft Azure, C Sharp (Programming Language), Databases, Database Development, Microsoft Visual Studio, Microsoft SQL Server, Performance Tuning, Windows PowerShell, Security Software, Software Engineering, Scripting, Database Optimization, Software Application Programming, Enterprise Service Bus
- **Published:** October 30, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9276808/principal-cyber-software-engineer-sr-principal-cyber-software

## About the Role

* Candidate must currently have an active TS/SCI with Polygraph security clearance to be considered. The security clearance eligibility must be in place by the start date and must stay in place through employment.
 * Bachelor's degree with 5 years of relevant experience, a Master's degree with 3 years of relevant experience, a PhD with 1 year of relevant experience, or 9 years of relevant experience in lieu of a degree.

 * Demonstrated experience developing applications using C#, .NET Framework, ASP.Net, andWindows Development using Visual Studio.
 * Significant experience with Microsoft SQL Server (MSSQL), including both database development and DBA tasks such as database maintenance, performance tuning, indexing strategies, and security configuration.
 * Strong familiarity and hands-on experience working within Agile development environments.
 * Proven ability to organize, prioritize, and self-manage multiple complex project tasks simultaneously.
 * Experience collaborating with stakeholders to iteratively define requirements and successfully translate them into actionable user stories.
 * Strong analytical skills to troubleshoot, perform root-cause analysis, and resolve complex software defects across the application stack.

Basic Qualifications for a Sr. Principal Cyber Software Engineer:

 * Candidate must currently have an active TS/SCI with Polygraph security clearance to be considered. The security clearance eligibility must be in place by the start date and must stay in place through employment.
 * Bachelor's degree with 8 years of relevant experience, a Master's degree with 6 years of relevant experience, a PhD with 4 years of relevant experience, or 12 years of relevant experience in lieu of a degree.

 * Demonstrated experience developing applications using C#, .NET Framework, ASP.Net, andWindows Development using Visual Studio.
 * Significant experience with Microsoft SQL Server (MSSQL), including both database development and DBA tasks such as database maintenance, performance tuning, indexing strategies, and security configuration.
 * Strong familiarity and hands-on experience working within Agile development environments.
 * Proven ability to organize, prioritize, and self-manage multiple complex project tasks simultaneously.
 * Experience collaborating with stakeholders to iteratively define requirements and successfully translate them into actionable user stories.
 * Strong analytical skills to troubleshoot, perform root-cause analysis, and resolve complex software defects across the application stack.

Preferred Qualifications for both levels:

 * Experience with modern .NET (.NET 5/6/8+) and cloud-ready architectures.
 * Proficiency with integration patterns and architectures like an Enterprise Service Bus (ESB).
 * Hands-on experience with Azure DevOps, CI/CD pipeline configuration, and scripting via PowerShell.
 * Self-starter with a proven ability to master new technologies independently and provide technical leadership on assigned development projects.

## Description

* Collaborate within a team of software engineers to design, develop, and deploy new enterprise systems while providing continued Operations and Maintenance (O&M) support for existing applications.
 * Manage, maintain, and optimize SQL Server databases, executing routine DBA responsibilities in parallel with core application development.
 * Develop and enhance a distributed Windows enterprise service bus (ESB) architecture while ensuring the stability of high-volume, high-availability MSSQL databases.
 * Support the architectural design, system implementation, and scaling of applicable technologies to successfully complete critical mission requirements.