> Markdown version of [/jobs/ext/2270712-software-engineer-sr-e3](https://www.wearedevelopers.com/jobs/ext/2270712-software-engineer-sr-e3). 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 Sr - E3 - **Company:** Lockheed Martin - **Location:** Fort Worth, TX, United States - **Experience:** Expert - **Salary:** $98,100.0 - $182,100.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), C (Programming Language), Agile Methodology, JIRA, C Sharp (Programming Language), C++ (Programming Language), Computer Engineering, Continuous Integration, Hardware Design, MATLAB, Microsoft Visual Studio, Software Engineering, Software Requirements Analysis, Systems Integration, Gitlab, Git, Information Technology, Data Analytics - **Published:** August 27, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9122443/software-engineer-sr-e3 ## About the Role * Bachelor's degree or above from an accredited college in Computer Science, Computer Engineering, Software Engineering, or a related STEM discipline * Experience with MATLAB/Simulink scripting and modeling * Experience with C, C++, C# or a related language * Experience with software requirements development * Experience with software/hardware integration and testing Desired Skills * Active Secret Government Security Clearance * Experience with Agile methodologies * Ability to work in a dynamic, collaborative, and team-based environment * Experience with Jira, Git, GitLab, and CI/CD concepts * Experience with Visual Studio * Knowledge of embedded computer architectures and hardware * Experience with SIMON test development environments * Problem solving software and hardware issues, inquisitive, analytical, detail-oriented, problem-solver * Looking for an analytical and methodical individual who enjoys troubleshooting complex technical issues. ## Description As a PTMS/Propulsion Software Engineer Sr you will be responsible for support of PTMS and Propulsion through its entire lifecycle. Your responsibilities will include: * Develop functional and physical architecture definitions * Develop and maintain detailed software requirements for PTMS and Propulsion. * Develop and test required hardware/software integration tests within a lab environment. * Develop models of the system in order to test software fixes with real aircraft data * Collaborate with cross functional engineers to troubleshoot systemic issues as well as aircraft faults. * Query fleet data and use data analytics to establish system level requirements based on fleet utilization. ## Related Videos - [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) - [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) - [WeAreDevelopers LIVE - Modern DevOps for IoT Devices and More](https://www.wearedevelopers.com/videos/1805-wearedevelopers-live-modern-devops-for-iot-devices-and-more) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Are Code Reviews Worth It? Insights from 16 Years of Review Data](https://www.wearedevelopers.com/videos/1135-are-code-reviews-worth-it-insights-from-16-years-of-review-data) - [Building a Multi-Agent Orchestration Engine That Actually Follows the Rules](https://www.wearedevelopers.com/videos/100159-building-a-multi-agent-orchestration-engine-that-actually-follows-the-rules) ## Related Articles - [Software Engineer Career: Things You Should Know](https://www.wearedevelopers.com/magazine/143-software-engineer-career-things-you-should-know) - [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard) - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)