Software Engineer Level 3/AHT
Listed on 2026-07-21
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Software Development
Software Engineer, Python
RELOCATION ASSISTANCE:
Relocation assistance may be available
CLEARANCE REQUIRED FOR START:
Yes
CLEARANCE TYPE:
Secret
TRAVEL:
Yes, 10% of the Time
Description
At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon.
We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work — and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.
Northrop Grumman Defense Systems is seeking a Software Engineer Level 3/4 to join our multi‑discipline Advanced Weapons engineering team. The role focuses on the development, integration, deployment, and sustainment of satellite ground‑segment software that supports test events, launch rehearsals, and operational missions.
Location: Northridge, CA – no remote/telework option.
Security: Active U.S. DoD Secret clearance
What You’ll Get to Do
Full‑stack development at the OS, platform, and mission‑unique software layer.
Design and implement applications/services using service‑oriented or object‑oriented architectures and messaging protocols.
Work with a variety of languages and toolsets, including C, C++, C# or Java or Python .
Act as a self‑starter, making decisions that consider overall project budget and schedule.
Support ground‑segment operations and associated configurations, troubleshooting both software errors and hardware issues that affect ground software.
Participate in Acceptance Test events – planning, execution, and reporting.
Develop and maintain test automation frameworks and scripts.
Configure ground‑segment software for development, test, and operational environments.
Resolve and remediate software defects; implement enhancements driven by customer change requests or mission needs.
Provide ground‑software support during launch and launch‑rehearsal events.
Install new ground‑segment software across operational, development, and test environments.
Principal Software Engineer (Level3)
Bachelor’s degree in a STEM related field with 5 years of Computer or Software engineering experience, or 3 years of experience with a Master’s degree.
Real world experience working in C/C++ and knowledge in C#, Java, Python
Experience working with Windows, Unix/Linux OS
Experience with full software lifecycle: specification, design, implementation, documentation, integration, debug and maintenance are required
Experience in Atlassian Products like Jira, Gitlab, Confluence and have experience running teams in the Scrum Master capacity
Proficiency in diagnosing electronic, mechanical, and hydraulic systems, including the use of oscilloscopes, multi-meters, and signal generators
Active DoD Secret Clearance, with ability to be cleared to special access programs
Sr Principal Software Engineer (Level4)
Bachelor’s degree in a STEM related field with 8 years of Computer or Software engineering experience, or 6 years of experience with a Master’s degree, or 4 years of experience with a PhD
Expert level real world experience working in C/C++ and knowledge in C#, Java, Python
Extensive experience working with Windows, Unix/Linux OS
Experience with full software lifecycle: specification, design, implementation, documentation, integration, debug and maintenance are required
Experience in Atlassian Products like Jira, Gitlab, Confluence and have experience running teams in a Product Owner or Team Lead capacity
Proficiency in diagnosing electronic, mechanical, and hydraulic systems, including the use of oscilloscopes, multi-meters, and signal generators. Expertise in maintaining, adjusting, and calibrating precision measurement equipment to verify they meet established standards and working with different network…
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