Associate Criticality Safety Engineer – Active Clearance Required

We have an opening for an Associate Criticality Safety Engineer within the Environment, Safety, and Health (ESH) Directorate. You will contribute to the design, development, and testing of nuclear equipment and systems for Lawrence Livermore National Laboratory (LLNL) operations with fissionable materials. You will also contribute to projects and task assigned to LLNL supporting the Department of Energy (DOE) Nuclear Criticality Safety Program (NCSP). This position is in the Nuclear Criticality Safety Division (NCSD).
This position offers a hybrid schedule, blending in-person and virtual presence. You will have the flexibility to work from home one or more days per week.
You will
Assist with criticality safety evaluations in conformance with DOE-STD-3007 and LLNL administrative procedures and support the review of new or proposed changes to existing equipment or operating procedures.
Perform walk-through inspections and assist with basic annual reviews of operations and work authorization/work control documents and support the review of safety procedures and documents for consistency with criticality safety evaluations and adequate implementation of criticality safety controls.
Perform technical/scientific assignments of limited complexity using established methods and procedures under general direction, and provide technical support to engineers, scientists, and facility staff as a member of a team in scientific research and development projects and/or ongoing operations.
Gather, organize, and assist in analyzing data and information in support of the work activities, and help prepare documents, calculations, recommendations, corrective action documentation, designs, or related technical work products.
Contribute to solutions for routine or limited-complexity problems using standard techniques and established practices, supporting project and organizational goals.
Travel to the Nevada National Security Sites as needed.
Conduct Fundamentals of Criticality Safety training courses.
Perform other duties as assigned.
This position requires an active Department of Energy (DOE) Q-level clearance or active Top Secret clearance issued by another U.S. government agency at the time of hire.
Bachelor’s Degree in Nuclear Engineering, Physics, or closely related scientific discipline (e.g., mechanical/systems engineering, nuclear physics, particle physics, radiochemistry) or equivalent combination of education and prior relevant experience.
Fundamental knowledge of and some academic, internship, research, or work experience in a nuclear facility, nuclear reactor, chemical, high hazard, radiological operation, or similarly regulated technical environment.
Ability to apply fundamental technical, analytical, and problem-solving skills to assigned work using established methods and procedures.
Familiarity with personal computers and exposure to radiation transport software such as COG, MCNP, GEANT, or SCALE is desirable.
Experience modeling the Inherently Safe Subcritical Assembly (ISSA) and performing pulsed-neutron experiments.
Experience performing reactor kinetics calculations and developing custom radiation transport code modules for specific experiments.
Experience modeling critical and subcritical benchmark experiments in COG, MCNP, OpenMC.
Ability to assist with preparing technical documents and calculations following established protocols and guidance.
Basic familiarity with DOE orders, national consensus standards, and engineering practices is desirable.
Proficient verbal and written communication and interpersonal skills to work effectively in a collaborative team environment.
Ability to document and explain assigned technical or operational work results to supervisors, project leads, and team members.
Ability to reprioritize and change programmatic direction depending on emergent requests and in collaboration with a variety of multidisciplinary teams.
Qualifications We Desire
Master’s Degree in Nuclear Engineering, Physics, or closely related scientific discipline or equivalent combination of education and prior relevant experience.
Experience in criticality safety including preparing criticality safety evaluations and implementation of criticality safety controls.
Knowledge of LLNL’s policies, procedures, and practices.
Knowledge of and/or experience with DOE STD-3007 and ANSI/ANS-8 Series Consensus Standards.
Pay Range: $121,830 - $154,500 Annually
This is the lowest to highest salary range in good faith we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

Employment type
Part-time

Work arrangement
Hybrid