> Markdown version of [/jobs/ext/1459049-software-engineer-3-citizen](https://www.wearedevelopers.com/jobs/ext/1459049-software-engineer-3-citizen). 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). --- # Software Engineer 3 (Citizen) - **Company:** PROLIM Corporation - **Location:** Los Angeles, CA, United States - **Experience:** Expert - **Salary:** $249,600.0 - $312,000.0 - **Contract:** Permanent contract - **Skills:** C (Programming Language), Agile Methodology, JIRA, IBM Rational ClearCase, Communications Protocols, Software Debugging, Embedded Software, Global Positioning Systems (GPS), GPS Navigation Devices, IBM Rational Clearquest, Python (Programming Language), MATLAB, Requirements Management, Sensor Fusion, Simulink, Software Configuration Management, Software Engineering, Software Requirements Analysis, Verification and Validation (Software), System Testing, Systems Integration, Software Technical Review, Software Verification, Git, SC Clearance, Information Technology, DO-178B, Software Performance, PolySpace - **Published:** July 27, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=0da126f8ca4bce71 ## About the Role * Bachelor's Degree in Computer Science, Software Engineering, Electrical Engineering, Aerospace Engineering, or another STEM discipline. * 5+ years of professional software development experience. * Strong hands-on experience with MATLAB and Simulink. * Proficiency in C and Python programming. * Experience with INS/GPS Navigation Systems and Kalman Filter development. * Experience using software configuration management tools such as Git, Jira, ClearCase, or ClearQuest. * Experience developing simulation models using MATLAB/Simulink. * Excellent analytical, troubleshooting, communication, and collaboration skills. * U.S. Citizenship is required. * Ability to obtain and maintain a U.S. Government Secret Clearance., * Active U.S. Government Secret Clearance. * Experience with Sensor Fusion using IMU, GPS, barometers, and related sensors. * Embedded navigation software development experience. * Experience with DOORS requirements management. * Knowledge of DO-178B/C safety-critical software development. * Experience with MIL-STD-1553, ARINC-429, and RS-422 communication protocols. * Experience using Polyspace, LDRA, and VectorCAST. * Software verification, validation, testing, and certification experience. Top Skills * MATLAB & Simulink Development * C & Python Programming * INS/GPS Navigation & Kalman Filter Design ## Description This is an exciting opportunity for experienced software engineers with expertise in navigation systems, embedded software development, MATLAB/Simulink, C, Python, INS/GPS, and Kalman Filter algorithms to contribute to the development of next-generation aerospace and defense technologies., * Develop, test, debug, and integrate embedded software for advanced navigation systems. * Design and implement software solutions using MATLAB/Simulink, C, and Python. * Develop and optimize INS/GPS navigation algorithms, including Kalman Filter implementation. * Perform software integration, verification, validation, and system testing on mission-critical hardware platforms. * Translate software requirements into robust software designs and implementations. * Support software performance analysis, troubleshooting, and continuous improvement. * Participate in Agile software development and Model-Based Engineering (MBE) activities. * Collaborate with multidisciplinary engineering teams to deliver innovative aerospace and defense solutions. * Participate in technical design reviews, software integration activities, and system verification efforts. ## 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) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [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 - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering) - [Software Engineer Career: Things You Should Know](https://www.wearedevelopers.com/magazine/143-software-engineer-career-things-you-should-know) - [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) - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology)