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# Sr Principal Software Engineer

- **Company:** Northrop Grumman
- **Location:** El Segundo, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Agile Methodology, Systems Engineering, JIRA, C++ (Programming Language), Software Debugging, Linux on Embedded Systems, Ethernet, Python (Programming Language), Software Architecture, Systems Development Life Cycle, Real-Time Operating Systems, Fortify (Software), SAP (Applications), Software Engineering, SonarQube, Subversion, VxWorks, Multithreading, Fibre Channel, Gitlab, Bitbucket, Atlassian Bamboo, Jenkins, Programming Languages
- **Published:** October 20, 2026
- **Apply:** https://www.juju.com/job/23_94638E3EF1220A67F34D94BDC76C65BD

## About the Role

Travel up to 25% may be required.Basic Qualifications:*Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline and 8 years of related engineering experience; OR a Master's degree in a STEM discipline and 6 years of related engineering experience; OR a PhD in a STEM discipline and 4 years of related engineering experience.*Experience with the full SW Development Life Cycle (SDLC)*Experience with the following programming and scripting languages: C/C++, and Python*Experience with two of the following tools: Jira, Crucible, Bitbucket, Gitlab, Subversion, Bamboo, Jenkins, Sonarqube, Fortify, or Coverity*Experience with Agile SW development, embedded system programming, SW integration and testing*Familiarity with at least one of the wire data interfaces: 1553, 1394, Serial, CAN, Ethernet/IP, or Fibre Channel, etc.*Excellent communication, interpersonal skills, and the ability to interface with all levels of employees and
management*Ability to collaborate with systems engineers, hardware designers and integration/test engineers to develop and maintain complex SW systems*Active in-Scope, U.S. Government Top Secret clearance.*Ability to obtain and maintain initial Special Program Access (SAP/PAR).
This SAP/PAR must be obtained prior to commencement of employment and must be obtained within a reasonable amount of time as determined by the company to meet its business needs. (Of note: SAP/PAR will be upgraded once selected candidate is in role.
Therefore, candidate must also be able to obtain and maintain upgraded SAP/PAR.)Preferred Qualifications:*Current applicable Special Access Program (SAP) clearance.*Active U.S. Government Top Secret SCI clearance (with a background investigation within the past 5 years or enrolled into Continuous Evaluation).*Experience and proficiency in software architecture, design, implementation, integration, and debugging C++ SW running on Real-Time Operating systems such as: VxWorks, Integrity, AND/OR Real Time Embedded Linux.*Experience with developing multi-threaded SW*Differentiating characteristics include demonstrated leadership, teamwork capabilities, excellent oral and written communications skills, and strong interpersonal communication skills.*Demonstrated professional experience developing software Java*Can identify moderate execution defects by only reading code*Understanding of how their embedded SW component will fit into a larger SW system / architecture*, Able to