> Markdown version of [/jobs/ext/2180387-space-systems-principal-systems-engineer-aht](https://www.wearedevelopers.com/jobs/ext/2180387-space-systems-principal-systems-engineer-aht). 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). --- # Space Systems/ Principal Systems Engineer (AHT) - **Company:** Northrop Grumman - **Location:** Fairfax, VA, United States - **Salary:** $87,600.0 - $137,600.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Computing Platforms, Systems Engineering, Confluence, JIRA, C++ (Programming Language), Software Documentation, Computer Programming, Continuous Delivery, Continuous Integration, Document Management Systems, Embedded Software, Network Interface Controllers, Firmware, Python (Programming Language), Language Modeling, Scrum Methodology, Rhapsody, Integration Tests, Software Version Control - **Published:** August 22, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9051144/space-systems-principal-systems-engineer-aht ## About the Role * For Systems Engineer: Bachelor's degree in a STEM discipline and 2 years of relevant experience; Master's degree and 0 years of experience * For Principal Systems Engineer: Bachelor's degree in a STEM discipline and 5 years of relevant experience; Master's degree and 3 years of relevant experience; PhD and 0 years of relevant experience * Active TS/SCI clearance required at time of application * Ability to elicit, analyze, and document system-level requirements (functional & non-functional). * Experience with or knowledge of creating and managing traceability matrices linking requirements to design, code, and verification. * Familiarity with interface control documents (ICDs) and experience defining hardware-software and software-software interfaces. * Working knowledge of modeling languages/tools for use-case, activity, and sequence diagrams. * Experience working in or familiarity with Agile/Scrum environments, including backlog grooming and sprint planning. * Effective communication and interpersonal skills; ability to work successfully with cross-functional teams. * Proficient in version-control systems and collaborative development tools (Jira, Confluence, etc.)., * Experience with families of products that share a common software platform (e.g., automotive, aerospace, medical devices). * Active Top Secret/SCI clearance * Certification in Systems Engineering (e.g., INCOSE CSEP) or Agile (e.g., CSM, SAFe). * Familiarity with model-based development (MBSE) and tools such as Cameo Systems Modeler or IBM Rhapsody. * Programming proficiency in C/C++, Python, or Rust for embedded development. * Knowledge of safety and compliance standards (e.g., IEC 61508, ISO 26262, FDA 21 CFR 820). * Experience with automated testing frameworks and continuous integration/continuous deployment (CI/CD) pipelines. ## Description * Lead the architecture and implementation of reusable software components for a multi-variant product line. * Elicit, analyze, and document system-level functional and non-functional requirements for the entire product family. * Maintain a traceability matrix linking requirements to design, implementation, and verification artifacts. * Conduct requirement reviews with cross-functional stakeholders (hardware, firmware, QA, product management) and drive consensus. * Define, develop, and maintain ICDs for all hardware-software and software-software interfaces. * Create detailed use-case diagrams, activity flows, and sequence diagrams that capture user interactions and internal processes. * Collaborate with Agile teams to translate requirements into user stories, backlog items, and sprint deliverables. * Oversee integration testing, validation, and verification of system-level functionality across product variants. * Continuously assess and improve engineering processes, tooling, and documentation standards. 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