Nuclear Completion Engineer
X-Energy · On-site
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Job Description
The Completions Engineer is a systematic detail-oriented coordinator who ensures nothing falls through the cracks during the critical transition from construction and commissioning to licensed operations.
This role also provides critical support to the Commissioning Manager and Test Engineers in ensuring readiness for turnover milestones and managing punchlist items. As systems progress toward turnover from construction to commissioning and from commissioning to operations, you'll work closely with the commissioning team to track turnover prerequisites, coordinate punchlist resolution, and ensure that all documentation and evidence files are ready to support turnover decisions.
This role demands meticulous attention to detail in defining requirements and managing evidence files, a strong questioning attitude to probe whether evidence truly demonstrates readiness, and exceptional ability to influence across organizations and get things done through coordination, persistence, and relationship-building rather than formal authority.
This role will be the operational readiness "system integrator"—the person working toward a comprehensive view of readiness status across all functional areas, tracking progress, asking the hard questions when evidence looks incomplete, and driving closure on the countless details that collectively demonstrate the facility is ready for NRC authorization and safe operations.
This role offers the rare opportunity to build the completions tracking program for a first-of-a-kind nuclear facility while defining the completions methodology that will be used for all future TRISO-X facilities— the work will establishes the standards for readiness verification across the next generation of advanced fuel manufacturing.
Job Profile Tasks/Responsibilities:
Level III:
Requirements Definition & Evidence Framework
Help translate readiness criteria into specific, verifiable requirements for assigned systems—supporting the breakdown of broader readiness concepts into concrete, measurable completion items with clear acceptance criteria
Support definition of the objective evidence required to demonstrate assigned requirements are satisfied—helping identify the documentation, demonstrations, inspections, or test results needed to prove readiness
Work with Commissioning Test Engineers to support identification of system-specific readiness requirements including equipment status verification, testing completion, punchlist resolution, documentation adequacy, and personnel qualification
Support the Commissioning Manager and senior completions engineers in tracking turnover prerequisites for assigned systems—helping document the requirements and evidence needed for construction-to-commissioning turnover and commissioning-to-operations turnover
Coordinate with Readiness Leads for assigned functional areas (Operations, Maintenance, QA, Nuclear Safety, Engineering, etc.) to support tracking of functional-area requirements and evidence standards
Apply a developing questioning attitude during requirements definition—help flag vague requirements and support efforts to ensure acceptance criteria are objective and verifiable
Evidence Gathering & Tracking
Support department managers in assembling evidence files that document readiness through inspection reports, test results, training records, procedure approvals, calibration certificates, and other objective documentation
Support Commissioning Test Engineers on punchlist tracking for assigned systems—help track commissioning punchlist items, coordinate resolution across organizations, and document punchlist closure in evidence files supporting turnover
Help maintain the completions database for assigned scope—supporting the tracking system that captures requirements, current status, assigned responsible party, due date, dependencies, and links to supporting evidence
Track assigned open readiness actions with strong attention to detail, helping ensure items are not overlooked, forgotten, or allowed to slip past their due date
Support monitoring of turnover milestone readiness for assigned systems—helping compile visibility into which systems are ready for turnover, what prerequisites remain open, and what punchlist items must be resolved
Help identify completions roadblocks and dependencies for assigned scope and flag issues that may require management attention
Coordinate across organizational boundaries to help obtain evidence and support closure—working with engineers, operators, maintenance personnel, QA inspectors, trainers, and managers who don’t report to you but whose cooperation is needed
Quality & Verification
Review evidence files to help verify that submitted documentation supports what it claims to demonstrate—flag gaps and raise questions when evidence appears incomplete
Maintain strong attention to detail in evidence management—help ensure documents are properly indexed, links are traceable, signatures are present, and revisions are current
Support the commissioning team with turnover documentation for assigned systems—help verify that turnover packages include required evidence and that punchlist status is accurately documented
Support internal readiness assessments conducted by Readiness Leads by providing completions data and status information for assigned functional areas
Help prepare status updates for management and Operational Readiness Reviews, summarizing completions data into clear updates on readiness status for assigned scope
Coordination & Influence
Build working relationships across the organization—support colleagues in meeting their readiness obligations in a collaborative, solutions-oriented manner
Support efforts to drive completion of actions owned by other organizations through clear communication, follow-up, and relationship-building
Participate in coordination meetings with stakeholders to help resolve cross-functional issues and support progress toward readiness milestones
Support the Commissioning Manager and Joint Test Group by providing punchlist tracking and evidence file status updates for assigned systems
Communicate progress, issues, and questions clearly to both technical and non-technical audiences including engineers, operators, and managers
Level IV:
Requirements Definition & Evidence Framework
Translate readiness criteria into specific, verifiable requirements for assigned systems and functional areas—breaking down broader readiness concepts into concrete, measurable completion items with clear acceptance criteria
Help define what objective evidence is required to demonstrate each requirement is satisfied—supporting identification of the documentation, demonstrations, inspections, or test results needed to prove readiness with sufficient rigor to satisfy regulatory scrutiny
Work with Commissioning Test Engineers to identify system-specific readiness requirements including equipment status verification, testing completion, punchlist resolution, documentation adequacy, and personnel qualification
Support the Commissioning Manager in developing turnover prerequisites for assigned systems—helping establish the specific requirements and evidence needed for construction-to-commissioning turnover and commissioning-to-operations turnover
Work with Readiness Leads across assigned functional areas (Operations, Maintenance, QA, Nuclear Safety, Engineering, etc.) to support functional-area requirements and evidence standards
Apply a questioning attitude throughout requirements definition—help identify vague requirements, probe for specificity, and support development of objective and verifiable acceptance criteria
Evidence Gathering & Tracking
Support department managers in building comprehensive evidence files that document readiness through inspection reports, test results, training records, procedure approvals, calibration certificates, and other objective documentation
Coordinate with Commissioning Test Engineers on punchlist management for assigned systems—track commissioning punchlist items, support resolution across organizations, and ensure punchlist closure is properly documented in evidence files supporting turnover
Support and help maintain the completions database—the systematic tracking system that captures requirements, current status, assigned responsible party, due date, dependencies, and links to supporting evidence
Track open readiness actions across assigned functional areas and systems with strong attention to detail, helping ensure items are not overlooked, forgotten, or allowed to slip past their due date
Support monitoring of turnover milestone readiness—helping provide the Commissioning Manager with visibility into which assigned systems are ready for turnover, what prerequisites remain open, and what punchlist items must be resolved before turnover can proceed
Identify completions roadblocks and dependencies for assigned scope, escalate issues that require management attention, and support cross-organizational problem-solving to drive resolution
Work across organizational boundaries to obtain evidence and drive closure—partnering with engineers, operators, maintenance personnel, QA inspectors, trainers, and managers who don’t report to you but whose cooperation is essential
Quality & Verification
Review evidence files with a questioning attitude to help verify that submitted documentation demonstrates what it claims to demonstrate—probe for gaps, raise questions about assumptions, and flag inadequate evidence for completion rather than accepting it at face value
Maintain strong attention to detail in evidence management—help ensure documents are properly indexed, links are traceable, signatures are present, revisions are current, and evidence can be retrieved when needed
Coordinate with commissioning team on turnover documentation for assigned systems—help verify that turnover packages include required evidence, test reports are complete, punchlist status is accurately documented, and acceptance criteria are satisfied
Support internal readiness assessments conducted by Readiness Leads, providing completions data, evidence files, and status summaries for assigned functional areas
Prepare status updates and reports for management and Operational Readiness Reviews, translating completions data into clear summaries of readiness status and remaining gaps for assigned scope
Coordination & Influence
Build working relationships across the organization—establish yourself as a trusted partner who helps people meet their readiness obligations rather than as a compliance enforcer creating bureaucratic burdens
Influence without authority to help drive completion of actions owned by other organizations—use persistence, clear communication, and relationship-building to get things done
Support or facilitate coordination meetings bringing together stakeholders to resolve cross-functional issues, align on evidence standards, and drive progress toward readiness milestones
Support the Commissioning Manager and Joint Test Group by providing turnover readiness status, punchlist tracking, and evidence file status for assigned systems approaching turnover milestones
Communicate progress, issues, and risks clearly to both technical and non-technical audiences including engineers, operators, and managers
Level VI:
Requirements Definition & Evidence Framework
Own and continuously improve the requirements definition and evidence framework methodology used across all TRISO-X facilities—translating high-level readiness criteria into specific, verifiable requirements and establishing the enterprise standard for what constitutes acceptable evidence
Define the enterprise standard for objective evidence needed to demonstrate readiness—specifying documentation, demonstration, inspection, and test result requirements with the rigor to withstand NRC scrutiny across multiple facilities and licensing bases
Serve as the final technical authority when Commissioning Test Engineers, Readiness Leads, or department managers disagree on system-specific readiness requirements, equipment status verification, testing completion, or personnel qualification standards
Partner directly with the Commissioning Manager and site leadership to define turnover prerequisites for the most complex, first-of-a-kind systems, and establish the enterprise template used to define turnover prerequisites for future facilities
Set functional-area requirements and evidence standards enterprise-wide in partnership with Readiness Leads across Operations, Maintenance, QA, Nuclear Safety, and Engineering, ensuring consistency across all TRISO-X facilities
Model and coach the questioning attitude expected throughout the organization—challenge vague requirements, probe for specificity, and mentor other completions and readiness engineers on developing objective, verifiable acceptance criteria
Mentor and develop less experienced completions and readiness engineers, reviewing their requirements definitions and evidence frameworks and building organizational bench strength in this discipline
Evidence Gathering & Tracking
Establish the enterprise methodology and standards for evidence files that document readiness through inspection reports, test results, training records, procedure approvals, calibration certificates, and other objective documentation, and coach department managers on building comprehensive files that meet this standard
Serve as the escalation point for the most complex punchlist management issues—resolving cross-organizational disagreements on punchlist resolution and ensuring punchlist closure is properly documented in evidence files supporting turnover
Own the completions database methodology and tooling strategy—the systematic tracking system architecture that captures every requirement, status, responsible party, due date, dependency, and linked evidence across all facilities
Provide oversight and quality assurance over tracking of hundreds to thousands of open readiness actions across all functional areas and systems, auditing tracking rigor and coaching others on maintaining relentless attention to detail
Serve as the primary source of enterprise-wide turnover milestone readiness visibility, briefing the Commissioning Manager and executive leadership directly on which systems and facilities are ready for turnover, what prerequisites remain open, and what punchlist items must be resolved
Identify the most complex completions roadblocks and cross-facility dependencies, and drive resolution directly with executive leadership when standard escalation paths are insufficient
Work across organizational and facility boundaries—including with personnel who do not report to you—to obtain evidence and drive closure, leveraging established credibility and relationship capital built over a career in completions and readiness
Continuously evaluate and improve completions tracking tools and processes based on lessons learned, incorporating improvements into the standard methodology used across all TRISO-X facilities
Quality & Verification
Establish the enterprise standard for evidence review—verifying that submitted documentation actually demonstrates what it claims, and training other completions and readiness engineers on how to probe for gaps and challenge assumptions rather than accepting evidence at face value
Set and enforce the enterprise standard for meticulous evidence management, ensuring every document is properly indexed, every link is traceable, every signature is present, every revision is current, and every piece of evidence can be retrieved instantly when regulators ask
Own final review and sign-off on turnover documentation for the most complex or first-of-a-kind systems—verifying turnover packages include all required evidence, test reports are complete, punchlist status is accurately documented, and acceptance criteria are satisfied
Lead and support internal readiness assessments and NRC-facing readiness reviews, providing completions data, evidence files, and status summaries, and personally representing completions and readiness status to regulators and executive leadership without oversight
Prepare and deliver status briefings and reports directly to executive leadership and Operational Readiness Reviews, translating enterprise-wide completions data into clear summaries of overall readiness status and remaining gaps
Serve as subject matter expert reviewer for completions methodology changes proposed across the organization, ensuring changes maintain rigor and regulatory defensibility
Coordination & Influence
Build and maintain enterprise-wide working relationships—establish yourself as the trusted senior partner who helps the entire organization meet its readiness obligations rather than as a compliance enforcer
Influence senior leadership and cross-organizational stakeholders without formal authority to drive completion of the most difficult, highest-consequence actions, using persistence, credibility, and relationship capital built over a career in this discipline
Facilitate executive-level coordination meetings bringing together multiple stakeholders and facilities to resolve the most complex cross-functional issues, align on enterprise evidence standards, and drive collective progress toward readiness milestones
Serve as the primary completions and readiness representative to the Commissioning Manager, Joint Test Group, and executive leadership, providing turnover readiness status, punchlist tracking, and evidence file status for the most critical systems and milestones
Communicate progress, issues, and risks directly to executive leadership and external regulators, translating technical completions status into clear, decision-ready summaries
Mentor and develop completions and readiness engineers across the organization, building the bench strength and institutional knowledge needed to sustain the completions program across future TRISO-X facilities
Level V:
Requirements Definition & Evidence Framework
Translate high-level readiness criteria into specific, verifiable requirements for each system and functional area—breaking down abstract concepts like "the facility is ready to operate" into hundreds of concrete, measurable completion items with clear acceptance criteria
Define what objective evidence is required to demonstrate each requirement is satisfied —specifying the documentation, demonstrations, inspections, or test results needed to prove readiness with sufficient rigor to satisfy regulatory scrutiny
Work with Commissioning Test Engineers to identify system-specific readiness requirements including equipment status verification, testing completion, punchlist resolution, documentation adequacy, and personnel qualification
Support the Commissioning Manager in defining turnover prerequisites —establishing the specific requirements and evidence needed for construction-to-commissioning turnover and commissioning-to-operations turnover for each system
Work with Readiness Leads across all functional areas (Operations, Maintenance, QA, Nuclear Safety, Engineering, etc.) to establish functional-area requirements and evidence standards ensuring each organization knows exactly what they must demonstrate
Exercise questioning attitude throughout requirements definition —challenge vague requirements, probe for specificity, and ensure acceptance criteria are objectiv