Nuclear Facilities Engineer ; Mechanical Project Engineer

What You Will Do

The Construction Readiness Office (CRO) is seeking a highly motivated and experienced Mechanical Nuclear Facilities Engineer (NFE 2/3) to support mission‑critical infrastructure, operational readiness, startup integration, and construction execution activities across Laboratory facilities and modernization projects.

The selected candidate will support the Team Lead in complex construction and readiness efforts associated with institutional and nuclear facility projects. This role will provide technical leadership throughout the project lifecycle including planning, design coordination, construction execution, commissioning, startup integration, operational turnover, and closeout activities.

The Mechanical NFE will work closely with project management teams, facility operations, engineering organizations, construction management, startup/testing personnel, subcontractors, and institutional stakeholders to ensure mechanical systems are designed, installed, tested, commissioned, and transitioned to operations safely and effectively.

This position requires strong technical expertise, operational awareness, field execution experience, and the ability to independently resolve complex engineering and project integration challenges in highly regulated and high‑consequence environments. The successful candidate will support the Laboratory’s national security mission through infrastructure modernization, facility readiness, operational integration, and project execution excellence.

• Ensures safety and security compliance and reinforces expectations across work activities, including stopping work when conditions are unsafe or compromise security.
• Applies and enforces nuclear facility engineering policies, procedures, and DOE and NNSA regulatory requirements. Evaluates regulatory changes and complex technical issues to develop and implement defensible engineering solutions.
• Manages the performance, configuration, and operability of nuclear facility systems and engineered safety features. Defines design requirements and ensures systems meet safety, quality, and mission objectives.
• Leads development of engineering analyses, designs, and technical deliverables supporting nuclear facility operations. Advances engineering concepts, standards, and practices.
• Performs and reviews hazard and accident analyses, establishes hazard controls, and develops safety basis documentation and system management programs supporting Vital Safety systems and facility modifications.
• Resolves complex engineering issues and interfaces with internal and external stakeholders, including regulatory authorities, to ensure compliance and timely delivery.
• Leads and executes significant portions of projects for Hazard Category 2 and 3 nuclear facilities. Develops and implements project plans and defines procurement requirements for nuclear quality related goods and services.
• Operates with a high degree of independence and technical judgment. Manages priorities, including emergent work, and contributes to organizational goals.
• Performs peer reviews, ensures quality of engineering deliverables, and mentors junior staff.

• Ensures safety and security compliance, maintains required training, and integrates both into all work activities, including stopping work when conditions are unsafe or compromise security.
• Applies and enforces nuclear facility engineering policies, procedures, and DOE and NNSA regulatory requirements. Leads evaluation of regulatory changes and technical data to resolve moderately complex engineering issues.
• Manages the performance, configuration, and operability of nuclear facility systems and engineered safety features using a risk‑based graded approach. Provides design authority support for operations and maintenance to ensure continued operational readiness.
• Leads development of engineering analyses, designs, and technical deliverables supporting nuclear facility operations. Contributes to advancement of engineering concepts, standards, and practices.
• Leads significant portions of projects or teams and resolves…