Sr Principal Software Engineer

Northrop Grumman•San Diego, CA

1d•$116,300 - $213,400•Onsite

About The Position

Northrop Grumman Aeronautics Systems is seeking a Senior Principal Software Engineer to join our team on site in San Diego, CA, El Segundo, CA, Palmdale, CA or Oklahoma City, OK. The ideal candidate is a self-starter with experience working in an Integrated Product Team (IPT) environment. In this role, you will be a key member of the Models & Simulation team, leading the planning, integration, and delivery of software releases, as well as diagnosing and resolving complex technical issues. The selected candidate will be required to work full-time, on-site at our facility. There is no remote / hybrid / telework available for this position. Travel up to 25% may be required.

Requirements

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.)

Nice To Haves

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 document, capture, and present software architectural components in modeling or diagramming tools
Experience with Static & Dynamic Code Analysis

Responsibilities

Provide technical leadership for the development, implementation, and maintenance of modular simulation and modeling software (e.g., C++, Python), guiding the team in architecture, standards, and best practices.
Lead the integration of simulation components with system interfaces, middleware, and test harnesses; establish integration strategies and ensure interoperable data flows and real-time performance across the team.
Define and oversee verification and validation strategies, review test plans and results, and direct the resolution of defects to ensure model fidelity, accuracy, and traceability to requirements.
Drive performance and scalability optimization efforts; set priorities for profiling and tuning, reduce latency, and champion CI/CD pipelines for automated builds, testing, and deployments.
Coordinate with systems engineers, testers, and stakeholders to translate requirements into simulation capabilities and scenarios; review and approve technical documentation; and lead technical presentations and demonstrations.