> Markdown version of [/jobs/ext/133017-testability-engineer-level-3-4](https://www.wearedevelopers.com/jobs/ext/133017-testability-engineer-level-3-4). 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). --- # Testability Engineer Level 3/4 - **Company:** Northrop Grumman - **Location:** Rolling Meadows, IL, United States - **Experience:** Expert - **Salary:** $98,900.0 - $185,000.0 - **Contract:** Permanent contract - **Skills:** Software Engineering, Test Case, Cisco Discovery Protocol, Software Version Control - **Published:** May 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=3cd7d2052fec5864 ## About the Role * Must have a Bachelor of Science degree in a STEM (Science, Technology, Engineering, or Math) discipline with 5 years of relevant experience; OR a Master of Science degree in a STEM discipline and 3 years of relevant experience; OR 1 year of relevant experience with a PhD in a STEM discipline. * Demonstrated exposure to the software design lifecycle. * Proven ability to drive problem resolution to complex technical challenges. * Must be able to obtain and maintain a DoD Secret Clearance. * US Citizenship required., * Must have a Bachelor of Science degree in a STEM (Science, Technology, Engineering, or Math) discipline with 8 years of relevant experience; OR a Master of Science degree in a STEM discipline and 6 years of relevant experience; OR a PhD in a STEM discipline with 3 years of relevant experience. * Demonstrated exposure to the software design lifecycle. * Proven ability to drive problem resolution to complex technical challenges. * Must be able to obtain and maintain a DoD Secret Clearance. * US Citizenship required., * Experience in Built-In-Test (BIT) design or operation. * Experience in interpreting Failure Modes, Effects, and Criticality Analysis (FMECA) documentation of systems. * Experience in the military, government, commercial aerospace industry (e.g. aviation/equipment maintenance, aircraft operations, or commercial industrial technology companies). * Knowledge of Military Specifications, Contract Data Requirements Lists (CDRLs), Data Item Descriptions (DIDs), and other related technical and contractual documents. ## Description * Perform analysis of Failure Modes, Effects, and Criticality Analysis (FMECA) to identify test case needs for Built-In-Test (BIT) of a system. * Lead interdisciplinary team in the development of individual Built-In-Test (BIT) test cases. * Develop testability documentation and release under engineering revision control tools. * Integrate supplier and Commercial Off The Shelf (COTS) BITs into a system BIT strategy. * Perform analysis of testability related metrics (i.e. fault detection and fault isolation percentages) of a system. * Present testability approach, design implementation, and analysis results at engineering design reviews. This position can be filled at the Testability Engineer Level 3 (Principal) or Testability Engineer Level 4 (Sr. Principal) based on specific requirements. 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