Associate Criticality Safety Engineer

Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world‑changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas: nuclear deterrence, threat preparedness, energy security, and multi‑domain defense. Associate Criticality Safety Engineer We have an opening for an Associate Criticality Safety Engineer within the Environment, Safety, and Health (ES&H) 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. This position will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level. Responsibilities 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. Additional Job Responsibilities (SES 2 Level) Serve as the principal investigator or technical lead for critical or sub‑critical benchmark experiments. Present and disseminate research results at scientific conferences and in peer‑reviewed publications, in both open and classified environments, internal and external to LLNL. Positively represent the program and laboratory demonstrating advanced verbal and written skills. Responsibilities may also include interacting with external stakeholders, both at NNSA and across the broader interagency, via offsite assignments. Qualifications Ability to secure and maintain a U.S. DOE Q‑level security clearance which requires U.S. citizenship. Bachelor’s Degree in Nuclear Engineering, Physics, or a 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. 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. Desired Qualifications Master’s Degree in Nuclear Engineering, Physics, or a 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 at the SES.1 Level; $146,340 – $185,544 annually at the SES.2 Level. Benefits Flexible benefits package. 401(k) plan. Relocation assistance. Education reimbursement program. Flexible schedules (depending on project needs). Our values – Position Information This is a Career Indefinite position, open to Lab employees and external candidates. Security Clearance This position requires a Department of Energy (DOE) Q‑level clearance. If you are selected, a federal background investigation will be initiated to determine eligibility for access to classified information. Q‑level clearance requires U.S. citizenship. Pre‑Employment Drug Test External applicants selected for this position must pass a post‑offer pre‑employment drug test, including testing for marijuana use in accordance with federal law. Wireless and Medical Devices Employees may be required to work in limited areas where personal and laboratory mobile devices of any type (cell phones, tablets, fitness devices, wireless headphones, etc.) are prohibited. Certain medical devices that pair with a mobile device must still follow these rules. Wireless‑enabled hearing aids that have been disabled are allowed in limited areas, secure space, and transit/buffer space within buildings. Equal Employment Opportunity We are an equal‑opportunity employer that is committed to providing a work environment free of discrimination and harassment. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws. Reasonable Accommodation Our goal is to create an accessible and inclusive experience for all candidates. If you need a reasonable accommodation during the application or recruiting process, please use our online form to submit a request. #J-18808-Ljbffr Lawrence Livermore National Laboratory