> Markdown version of [/jobs/ext/3875354-principal-engineer-software-sr-principal-engineer-software](https://www.wearedevelopers.com/jobs/ext/3875354-principal-engineer-software-sr-principal-engineer-software). 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 Engineer Software/Sr. Principal Engineer Software - **Company:** Northrop Grumman - **Location:** Dayton, OH, United States - **Experience:** Expert - **Salary:** $114,000.0 - $171,000.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), JIRA, C++ (Programming Language), IBM Rational ClearCase, Static Program Analysis, Communications Protocols, Computer Programming, Global Positioning Systems (GPS), IBM Rational Clearquest, Inertial Navigation Systems, Python (Programming Language), MATLAB, VectorCAST, Sensor Fusion, Software Engineering, Software Project Management, Software Requirements Analysis, Software Systems, Git, SC Clearance, DO-178B, PolySpace, Programming Languages - **Published:** October 22, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3464856377&tx=KR6161FFI&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## 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; 3 years of experience with Masters in STEM; 1 year with a PhD in STEM * Experience developing software in MATLAB/Simulink * Experience with development in at least one programming language: C, C++, and/or Python * Experience using software management and workflow automation tools such as ClearCase, Git, ClearQuest, or Jira * Experience with navigation algorithms * 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; 6 years of experience with Masters in STEM; 4 Years with a PhD in STEM * Experience developing software in MATLAB/Simulink * Experience with development one programming lanaguage in C, C++, and/or Python * Experience using software management and workflow automation tools such as ClearCase, Git, ClearQuest, or Jira * Experience with navigation algorithms * 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 * Experience developing, verifying, certifying and releasing mission and safety-critical software systems that comply with RTCA DO-178B/ C or similar guidelines * 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