This is a temporary, on-site position in the Idaho Falls, Idaho area. The schedule is four 10-hour days, Monday through Thursday, with performance anticipated through September 30, 2027.Summary: Provides oversight of non-destructive assay (NDA) activities associated with transuranic (TRU) waste and low-level waste / mixed lowlevel waste (LLW/MLLW) at the Radioactive Waste Management Complex (RWMC) as a Non-Destructive Assay Expert Technical Reviewer within the Waste Management TRU Program Organization.Responsibilities Include:• Conduct independent and expert technical reviews of NDA systems, procedures, and data analysis to ensure compliance with established protocols, standards (e.g., ANSI/ISO), and regulatory requirements.• Provide recommendations for improving NDA techniques, processes, and system reliability.• Review, revise, and approve technical procedures including operating procedures, calibration procedures, validation procedures, and quality assurance documents to ensure accuracy, clarity, and compliance with regulatory requirements.• Review Real-Time Radiography (RTR) recordings to identify items requiring detailed modeling, including those needing density and matrix corrections.• Independently perform ISOCS modeling for specific waste configurations to optimize measurement efficiency and accuracy.• Oversee calibration, certification, operation, and assist in troubleshooting of NDA instruments, including RBAS (Retrieval Box Assay System), ISOCS (In Situ Object Counting Systems), SGRS (SWEPP Gamma-Ray Spectrometer), WAGS (Waste Assay Gamma-Ray Spectrometer), and DAS (Drum Assay Systems).• Support instrument operations to ensure accurate and reliable performance across all NDA systems.• Collaborate with engineering and operations organizations to diagnose and resolve instrument or performance issues.• Support software validation and testing in support of the NDA systems.• Calculate measurement control data and review and approve control charts to detect trends or anomalies impacting measurement quality.• Validate NDA measurement data and batch data reports in the Waste Tracking System (WTS) to ensure accuracy, completeness, and compliance.• Perform validation of data generated by NDA systems to ensure measurement quality and compliance.• Review NDA activities for adherence to DOE, EPA, and WIPP Waste Acceptance Criteria (WAC).• Support audits by DOE Carlsbad Field Office, EPA, and other regulatory bodies, including preparation and on-site participation.• Support implementation of criticality safety controls and criticality working requirements related to NDA and waste characterization activities.