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# Principal/Sr.Principal Software Engineer Level 3/4

- **Company:** Northrop Grumman
- **Location:** Los Angeles, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Software Applications, Confluence, JIRA, C Sharp (Programming Language), C++ (Programming Language), CentOS, Software Documentation, Communications Protocols, Linux, Embedded Software, Ethernet, Joint Test Action (IEEE Standards), Object-Oriented Software Development, Real-Time Operating Systems, Software Engineering, Software Requirements Analysis, TCP/IP, Cisco Discovery Protocol, Atlassian Tools, Bitbucket
- **Published:** October 22, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9259880/principalsrprincipal-software-engineer-level-34

## About the Role

* US Citizenship and Active DoD Secret Clearance.
 * For Sr. Principal Embedded Software Engineer: Bachelor's degree in a STEM discipline and 8+ years of experience or Master's degree in a STEM discipline and 6 years of experience.
 * For Principal Embedded Software Engineer: Bachelor's degree in a STEM discipline and 5+ years of experience or Master's degree in a STEM discipline and 3 years of experience.

 * Strong professional experience developing software in C/C++ on Windows 10, 11, and Linux (preferably CentOS)
 * Experience operating oscilloscopes, power meters, power supplies, signal generators, and spectrum analyzers
 * Experience with MIL-STD-1553, TCP/IP, Serial, and Ethernet network communication protocols

 * Experience in deriving software requirements from system requirements; working with SRSs, ICDs, CDRLs
 * Advanced hands-on system troubleshooting and determining root-cause analysis.
 * Experience working in a Lab environment or production floor.
 * Self-directed and able to manage your own time with little oversight

Preferred Qualifications:

 * Working experience in Atlassian tools such as Jira, Confluence, Bitbucket, etc.
 * Experience with DOORS and/or EPLM.
 * Experience working with hardware programmers such as JTAG and ability to set up test equipment to support software development
 * Experience in other Object Oriented Programming languages like C#
 * Experience in embedded systems design with preemptive, multitasking real-time operating systems

## Description

A successful candidate will have the qualities and essential functional expertise with:

 * Generate software documentation.
 * Develop, implement, and maintain existing software for primarily Windows based desktop applications.
 * Participate in all aspects of the software development lifecycle activities