> Markdown version of [/jobs/ext/3142503-system-integration-and-test-engineer-sr](https://www.wearedevelopers.com/jobs/ext/3142503-system-integration-and-test-engineer-sr). 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). --- # System Integration and Test Engineer Sr - **Company:** Lockheed Martin - **Location:** King of Prussia, PA, United States - **Experience:** Expert - **Salary:** $95,900.0 - $178,100.0 - **Contract:** Permanent contract - **Skills:** Automation of Tests, Cloud Computing, Software Documentation, Network Interface Controllers, Python (Programming Language), Scrum Methodology, Systems Development Life Cycle, Signal Processing, Software Factory, System Testing, Systems Integration, Test Data, Data Processing, Software Verification - **Published:** September 29, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9199798/system-integration-and-test-engineer-sr ## About the Role * Excellent verbal and written communication - able to produce clear, concise reports and present findings to technical & non-technical audience * Proven experience creating test plans, cases, procedures, and reports for system integration/verificatio * Demonstrated hands-on experience in qualification/verification trials * Experience developing strategies to support formal product sell-off and acceptance * Ability to investigate, document, and report failures or anomalies in complex systems. * Active TS/SCI security clearance. Thus US Citizenship is required Desired Skills * Experience with requirements verification and feature test * Experience working on an Agile scrum team * Experience with automated test * Experience with Interface Control Documents (ICDs) * Experience with Cloud technologies and/or Software Factory * Experience with signal processing * Full development lifecycle experience * Experience with Python ## Description Test Planning & Execution * Design comprehensive test plans, cases, procedures, and reports. * Execute test campaigns in line with specifications and timeline. * Validate and analyze test data for accuracy and completeness. * Documentation & Communication * Author, review and sign off on test documentation (plans, reports, logs). * Provide clear, concise status updates to stakeholders (internal/external). * Support Test Readiness Reviews * System Integration * Develop and integrate automated test scripts into the broader tool ecosystem. * Integrate large, complex solutions within the wider system of systems framework. * Cross Functional Collaboration * Work within a large, multi disciplinary engineering team to deliver systems on tight deadlines. * Participate in verification and qualification trials. * Safety & Security * Ensure all testing activities being conducted comply with safety protocols. * Enforce data and equipment security requirements during testing. The information below includes the standard job description for this position Plans, implements, tests, documents, and maintains solutions for the integration and testing of mission data processing systems. Synthesizes customer contractual needs and requirements into system test solutions that acknowledge technical, schedule and cost constraints. Establishes functional and technical specifications and standards, solves hardware/software interface problems, defines input/output parameters, and ensures integration of the entire system or subsystem. Reviews, evaluates and derives requirements for testability, develops and directs preparation and execution of comprehensive test plans, procedures and schedules for complete systems and/or subsystems. Coordinates subsystem and/or system testing activities with programs and other organizations. Performs analysis of test results and prepares comprehensive subsystem and/or system level evaluation reports which verify and validate system performance. Writes discrepancy reports and performs integration regression testing to verify/validate incorporated fixes to software, components, subsystems and systems. ## Related Videos - [SMART Test Automation - the experience of legacy transformation](https://www.wearedevelopers.com/videos/100215-smart-test-automation-the-experience-of-legacy-transformation) - [Dirty Tests And How To Clean Them](https://www.wearedevelopers.com/videos/515-dirty-tests-and-how-to-clean-them) - [How To Test A Ball of Mud](https://www.wearedevelopers.com/videos/173-how-to-test-a-ball-of-mud) - [Green Cloud Computing](https://www.wearedevelopers.com/videos/592-green-cloud-computing) - [Testing .NET applications a Tool box for every developer](https://www.wearedevelopers.com/videos/704-testing-net-applications-a-tool-box-for-every-developer) - [Stop Guessing, Start Measuring: Evaluating RAG Systems with Synthetic Test Data](https://www.wearedevelopers.com/videos/1982-stop-guessing-start-measuring-evaluating-rag-systems-with-synthetic-test-data) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Integration And E2E Testing: Are They Complementary or Interchangeable?](https://www.wearedevelopers.com/magazine/86-integration-and-e2e-testing-are-they-complementary-or-interchangeable) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [What is a Test Plan: Guide to Test Planning](https://www.wearedevelopers.com/magazine/191-what-is-a-test-plan-guide-to-test-planning)