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Mechanical Cognizant System Engineer

Aalo Atomics - Idaho Falls, ID, United States - In-office - posted 2026-10-13

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Aalo Atomics is pioneering factory-fabricated microreactors designed to deliver affordable, scalable, and reliable nuclear power. The company is based in Austin, TX and is rapidly growing as it works to deploy the world's first fleet of advanced microreactors. You will serve as the Mechanical Cognizant System Engineer (CSE) providing lifecycle technical ownership of assigned mechanical systems at the Critical Assembly Facility (CAF) on the Aalo-X site. Initial system assignments are expected to include the Critical Assembly Vessel (CAV) and Reactivity Control System (RCS). As the CSE, you will be the technical owner of your assigned systems throughout their operating lifecycle—understanding why they were designed as they were, what requirements they must meet, how they are configured, how they are performing, and what must be done when they are maintained, modified, or begin to degrade. You will work closely with Operations, Maintenance, Nuclear Safety, QA, vendors, project engineers, and the Design Authority to keep assigned systems safe, reliable, correctly configured, and technically defensible. Key responsibilities include: **Cognizant System Engineering:** Maintain detailed technical knowledge of assigned system functions, design requirements, performance criteria, interfaces, operating limits, and current configuration, including traceability among requirements, physical configuration, safety-basis functions, and controlled documentation. Serve as the principal engineering point of contact for assigned systems. Maintain System Design Descriptions, drawings, calculations, specifications, vendor information, technical evaluations, and applicable engineering inputs to procedures. Maintain awareness of system interfaces with electrical, I&C, structural, facility, and reactor systems. **System Health & Performance Monitoring:** Monitor system health using surveillance results, inspection data, operating history, maintenance history, equipment condition, and field observations. Review test and surveillance results against approved design and performance requirements. Trend system parameters and equipment performance to identify degradation before required functionality is lost. Perform or support system walkdowns and material-condition assessments. Identify recurring equipment issues and develop technically sound corrective actions. Escalate adverse trends or conditions that challenge system requirements or safety functions. **Operations & Maintenance Support:** Provide engineering support for system operation, troubleshooting, maintenance, testing, and emergent equipment issues. Supply design-basis and technical input to maintenance work planning. Evaluate degraded and nonconforming conditions involving assigned systems, and support equipment-failure investigations, root-cause evaluations, and corrective actions. Establish or review technical acceptance criteria for maintenance and modification testing. Review completed work and test results to verify restoration of required system configuration and performance. **Configuration & Change Management:** Participate in change reviews affecting assigned systems. Evaluate changes for impacts to requirements, interfaces, performance, safety functions, documentation, testing, and equipment qualification. Support USQ screening/evaluations by providing accurate technical information. Support physical configuration walkdowns and reconcile discrepancies between field conditions and controlled documentation. Support Engineering Change Requests and Engineering Change Notices through implementation and closure. **Equipment Lifecycle & Procurement:** Monitor replacement-part availability and equipment obsolescence. Develop or review technical requirements for replacement equipment and components. **Requirements:** - Based in the United States - Willing to work on-site in Idaho Falls, Idaho - U.S. Citizen or U.S. Person in compliance with 10 CFR Part 810; may not hold non-compliant foreign citizenships

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