Processing & Joining Metallurgist / Materials Engineer

Job Overview Processing and Joining Metallurgist/Materials Engineer – This position is in the Materials Engineering Division (MED) within the Engineering Directorate. It requires full‑time on‑site presence due to the nature of the work. The role involves developing, qualifying, and implementing metallic joining and thermal processing methods for critical national security components. A full description of responsibilities and qualifications follows below. Responsibilities Develop, execute, and optimize metallic joining and thermal processing methods in a laboratory environment, including electron beam and laser welding, vacuum brazing, diffusion bonding, HIP, and heat treatment for steels, nickel‑base alloys, and other structural alloys. Provide metallurgical engineering support for processing, materials selection, and property investigations. Participate in the design, setup, and operation of processing and joining systems, including fixture design, parameter development, and troubleshooting. Perform metallurgical characterization and joint evaluation using sample preparation, optical microscopy (SEM as appropriate), hardness testing, and mechanical testing (for example, tensile or bend tests) to assess quality and performance. Organize, analyze, and present data from experiments and process development activities to improve understanding of process, structure, and property relationships. Collaborate with scientists, engineers, technologists, designers, and production partners as part of integrated teams spanning design, analysis, prototyping, and production implementation. Integrate experimental results with analytical or computational models (for example, process models, thermal or stress analyses, or microstructure evolution tools) to inform process window development and production workflows. Travel up to approximately 20 % to external production facilities (for example, Y‑12, Los Alamos National Laboratory, and the Kansas City National Security Campus) to observe and support operations, review procedures, and provide feedback to LLNL program management and design teams. Perform other duties as assigned. Additional Responsibilities (SES.2 Level) Take technical ownership of specific joining and thermal processing operations, including requirements definition, specification input, process qualification, and continuous improvement. Provide technical guidance and informal mentoring to less experienced staff, technicians, and students in joining and processing development, sample preparation, and metallurgical characterization. Lead or co‑lead defined technical tasks or small projects, coordinating across team members and tracking progress against scope, schedule, and quality requirements. Qualifications Ability to obtain and maintain a U.S. DOE Q‑level security clearance, which requires U.S. citizenship. Bachelor's degree in Metallurgical Engineering, Materials Science and Engineering, Welding Engineering, Mechanical Engineering, or a closely related field, or an equivalent combination of education and relevant experience. Experience planning and executing experiments in metallic joining or thermal processing (for example, welding, brazing, diffusion bonding, HIP, or heat treatment), including data collection, analysis, and documentation. Strong understanding of the relationships among processing parameters, microstructure, and mechanical properties, and the ability to assess joint and material quality using microstructural observations and basic mechanical test data. Experience or training in microstructural characterization of metallic materials and/or joints, including sample preparation and optical microscopy, with familiarity with SEM or other advanced methods as a plus. Demonstrated ability to work effectively on multidisciplinary teams, communicate status and results, and incorporate feedback. Sufficient verbal and written communication skills to prepare, present, and explain technical information. Demonstrated commitment to safe work practices and the ability to adapt to evolving priorities. Ability to travel to external production facilities to support program operations. Additional Qualifications (SES.2 Level) Comprehensive knowledge and experience focused on metallic joining or thermal processing, or closely related roles. Experience developing, optimizing, or qualifying joining and processing methods (for example, high energy density welding, vacuum brazing, diffusion bonding, or HIP) in a laboratory or production setting. Experience working in quality‑controlled or regulated environments (for example, DOE, aerospace, or nuclear), including the use of procedures, travelers, or work instructions. Demonstrated ability to independently plan and execute joining and processing experiments and metallurgical characterization, interpret results, and recommend process or heat treatment improvements. Experience using, interpreting, or collaborating with analytical or computational models to guide process development and qualification decisions. Demonstrated increasing technical leadership (for example, leading small project efforts, coordinating cross‑functional activities, or serving as a technical point of contact). Qualifications We Desire Master's degree in Metallurgical Engineering, Materials Science and Engineering, Welding Engineering, or a closely related field. Direct experience operating or developing joining and processing methods for critical components, including electron beam or laser welding, vacuum brazing, diffusion bonding, HIP, and complex heat treatments of structural alloys. Experience applying advanced characterization techniques (for example, SEM, EBSD, or X‑ray based methods) to evaluate joint microstructures and defects. Knowledge of advanced mechanical testing methods (for example, fracture or fatigue) and experience with joining of specialty or hazardous materials in controlled environments, including associated thermal processing. Familiarity with process modeling tools, digital workflows, or data management approaches that support systematic process development and qualification. Pay Range $121,830 – $185,544 annually. $121,830 – $154,500 annually for the SES.1 level. $146,340 – $185,544 annually for the SES.2 level. The lowest to highest salary in good faith belief at time of posting; position within the range based on specific competencies, education, qualifications, certifications, experience, skills, seniority, location, performance, and business needs. Benefits Included in 2026 Best Places to Work by Glassdoor! Flexible Benefits Package 401(k) Relocation Assistance Education Reimbursement Program Flexible schedules (*depending on project needs) Our values – visit Security Clearance This position requires a Department of Energy (DOE) Q‑level clearance. All cleared employees are subject to random drug testing. Q‑level clearance requires U.S. citizenship. Equal Employment Opportunity We are an equal‑opportunity employer that is committed to providing all qualified applicants 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 other characteristics protected by applicable laws. Reasonable Accommodation Our goal is to create an accessible and inclusive experience for all candidates applying and interviewing at the Laboratory. If you need a reasonable accommodation during the application or recruiting process, please use our online form to submit a request. California Privacy Notice The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitles job applicants, employees, and non‑employee workers to be notified for what personal information LLNL collects and for what purpose. 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