Sr. Principal Software Engineer
Quick Summary
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: No CLEARANCE TYPE: None TRAVEL: Yes, 10% of the Time Description At Northrop Grumman,
Northrop Grumman’s Space Sector is seeking a Sr. Principal Software Engineer to support the design, development, enhancement, and sustainment of web applications for the Manufacturing and Operations organization. This role can be based in either Redondo Beach, CA / Promontory, UT OR Linthicum, MD.
This role will lead development activities across the application lifecycle, partnering with functional stakeholders, technical teams, and program leadership to deliver secure, scalable, and maintainable software solutions that support manufacturing and operational objectives. The ideal candidate brings strong hands-on experience in ASP.NET Core, C#, SQL Server, and Agile delivery practices, along with the ability to guide technical direction, support modernization efforts, and mentor other developers in a mission-focused environment.
- Opportunity to lead development of applications that directly support Space Sector manufacturing and operations.
- Exposure to modernization and sustainment efforts across critical internal platforms.
- Collaborative environment with opportunities to influence technical direction and engineering practices.
Responsibilities
~1 min read- →Sustain and enhance legacy .NET Framework applications, including assessing and modernizing codebases (e.g. migrating to .NET Core) as business needs evolve.
- →Work with other software engineers on the architecture, design, development, testing, deployment, and sustainment of web-based business applications.
- →Develop and maintain applications using ASP.NET Core and C#.
- →Design, optimize, and support back-end data solutions using SQL Server.
- →Collaborate with business partners, product owners, analysts, and other engineers to define technical solutions aligned to operational needs.
- →Support full software lifecycle activities, including requirements analysis, code reviews, troubleshooting, defect resolution, and performance improvement.
- →Drive adherence to software engineering best practices, coding standards, and secure development approaches.
- →Participate in and help lead Agile ceremonies, sprint planning, backlog refinement, and technical estimation.
- →Mentor and support junior and mid-level developers.
- →Contribute to system modernization, integration, and continuous improvement initiatives across manufacturing and operations applications.
- →Work closely with cybersecurity, infrastructure, and program teams to ensure deployed solutions meet mission and security requirements.
Requirements
~2 min read- Bachelor's Degree in a STEM discipline plus with 8 years of engineering/technical experience; OR a Master's Degree in a STEM discipline plus 6 years of engineering/technical experience.
- Experience developing and supporting web applications using C# and ASP.NET Core.
- Experience with SQL Server database development, queries, stored procedures, and performance tuning.
- Experience working in an Agile software development environment.
- Experience leading technical efforts, software tasks, or small development teams.
- Ability to translate business or operational needs into software solutions.
- Ability to obtain and maintain a U.S. Government Top Secret clearance.
- Experience supporting manufacturing, operations, or enterprise business applications.
- Experience with RESTful APIs, system integrations, and service-oriented application design.
- Experience with front-end web technologies and modern UI frameworks.
- Experience with Azure DevOps, CI/CD pipelines, automated testing, or application modernization.
- Experience working in a regulated, secure, or mission-critical environment.
- Strong communication skills with the ability to work across technical and non-technical teams.
- Experience with Windows Server and IIS administration.
- Experience working with Python frameworks including Django and FastAPI.
- Experience working with containers (e.g. OpenShift).
Location & Eligibility
About this job
- Pay per year
- $122,800–$213,400 a year
- 12% below the $189,988 median for Software Engineer jobs on Jobera (6,692 salaries).
- Posted
- 12 days ago
Listing Details
- Posted
- October 21, 2026
- First seen
- October 22, 2026
- Last seen
- October 27, 2026
Posting Health
- Days active
- 9
- Repost count
- 0
- Trust Level
- 30%
- Scored at
- November 1, 2026
Signal breakdown
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