> Markdown version of [/jobs/ext/1778224-principal-senior-principal-software-engineer-simulink](https://www.wearedevelopers.com/jobs/ext/1778224-principal-senior-principal-software-engineer-simulink). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal/ Senior Principal Software Engineer - Simulink - **Company:** Northrop Grumman - **Location:** Los Angeles, CA, United States - **Experience:** Expert - **Salary:** $114,000.0 - $171,000.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), JIRA, IBM Rational ClearCase, Static Program Analysis, Communications Protocols, Computer Programming, Dynamical Systems, Global Positioning Systems (GPS), IBM Rational Clearquest, Inertial Navigation Systems, Python (Programming Language), MATLAB, Software Tools, Sensor Fusion, Simulink, Software Engineering, Software Project Management, Software Requirements Analysis, Software Systems, Git, SC Clearance, DO-178B, PolySpace - **Published:** July 2, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9009991/principal-senior-principal-software-engineer-simulink ## About the Role As a successful candidate, you will collaborate with peers across our organization and will have clearly demonstrated the strong leadership skills needed to join our top performing team. You will have a track record as an effective communicator and problem solver who is able to develop and maintain good working relationships with our internal and external customers. You will also have demonstrated a commitment to ethics and integrity, and the capability to innovate while challenging our traditional ways of doing business. You will make us even better!, * Bachelors degree in STEM with 5 years of hands on Software Development experience; Masters in STEM with 3 years of hands on Software Development experience; PhD in STEM with 1 year of hands on Software Development experience * Experience developing software in MATLAB/Simulink * Experience with development in C and Python * Experience using software management and workflow automation tools such as ClearCase, Git, ClearQuest, or Jira * Experience with using MATLAB to create, process, analyze, and visually represent data * Experience with using Simulink to model dynamic systems * Experience using Model Based Engineering tools * Experience with INS/GPS Kalman filter design and requirements definition * Demonstrated ability to work in a collaborative development environment * U.S. Citizenship is required * Ability to obtain and maintain a U.S. Government Secret clearance is required * Required to work on site full-time, * Bachelors degree in STEM with 8 years of hands on Software Development experience; Masters in STEM with 6 years of hands on Software Development experience; PhD in STEM with 4 year of hands on Software Development experience * Experience developing software in MATLAB/Simulink * Experience with programming (C and Python) * Experience using software management and workflow automation tools such as ClearCase, Git, ClearQuest, or Jira * Experience using MATLAB to create, process, analyze, and visually represent data. * Experience using Simulink to model dynamic systems. * Experience with Navigation Systems and INS/GPS Kalman filter design and requirements definition * Demonstrated ability to work in a collaborative development environment * U.S. Citizenship is required * Ability to obtain and maintain a U.S. Government Secret clearance is required * Required to work on site full-time Preferred Qualifications: * Current/Active U.S. Government Secret clearance * Experience in the development and performance of software tests * Experience using DOORS for software requirements management * Expertise in Sensor Fusion for Navigation Systems using IMU (Inertial Measurement Unit), GPS, barometers, and other sensors * Expertise in INS (Inertial Navigation System) * Expertise in Embedded INS/GPS (Global Positioning System) navigation systems * Demonstrated capability to translate formal software requirements into software designs * Demonstrated capability to define software requirements for an INS/GPS system * Familiarity with/Experience in INS/GPS Kalman filter design and requirements definition * Experience developing, verifying, certifying and releasing mission and safety-critical software systems that comply with RTCA DO-178B/ C or similar guidelines. * Demonstrated use of MATLAB for simulation and INS/GPS system performance evaluation * Hands-on experience with one or more communication protocols such as MIL-STD-1553, ARINC-429 or RS-422 * Experience with code analysis tools such as Polyspace and software test tools such as LDRA and VectorCast ## Related Videos - [Leveraging Large Language Models for Legacy Code Translation: Challenges and Solutions](https://www.wearedevelopers.com/videos/1157-leveraging-large-language-models-for-legacy-code-translation-challenges-and-solutions) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [How to develop an autonomous car end-to-end: Robotic Drive and the mobility revolution](https://www.wearedevelopers.com/videos/22-how-to-develop-an-autonomous-car-end-to-end-robotic-drive-and-the-mobility-revolution) - [Building a hypercar from scratch](https://www.wearedevelopers.com/videos/607-building-a-hypercar-from-scratch) - [Software stack under and over the hood of the fastest accelerating car in the world](https://www.wearedevelopers.com/videos/221-software-stack-under-and-over-the-hood-of-the-fastest-accelerating-car-in-the-world) ## Related Articles - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers)