We have an opening for a Mechanical Engineer to develop a full range of moderate to complex inspection tools, process aids, and performance test equipment in the areas of initiation systems, materials characterization, and high-speed diagnostics. In this role, you will be an integral member of an interdisciplinary team responsible for conducting data acquisition in support of LLNL stockpile assessments. This position is in the Detonator Surveillance and Enhanced Assessments Group (DSEAG) within the Environmental Test & Explosive Components (ETEC) section of the Defense Technologies Engineering Division. This assignment requires on-site work and will offer limited flexibility to work from home. 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. You will Conduct moderately complex to complex mechanical engineering activities and contribute to the development of processes and diagnostics for assessing initiation systems components. Provide administrative leadership for new and ongoing projects by: Establishing project objectives Prioritizing parallel tasks Allocating resources Contributing to project/program milestone completion and Providing solutions to problems through application of advanced techniques and methodologies. Collaborate with other team members in the design, implementation, and qualification of equipment. Work with energetic materials and obtain LLNL certification to handle explosives. Present written analyses and verbal briefings that capture and communicate results as well as periodic progress reports. Conduct formal and informal design reviews and team efforts and influence or provide guidance and technical direction in developing new processes and capabilities. Perform other duties as assigned. Additional job responsibilities, at the SES.3 level  Provide advanced knowledge to resolve technical and programmatic issues, using the broad application of technical concepts and techniques. Produce advanced conceptual and detail designs in support of on-going projects that require in-depth analysis and the creative use of established or innovative methods. Coordinate project interfaces and process deployment by interfacing with other organizations internal and external to the Laboratory and represent the organization as the primary technical contact on tasks and projects. Lead and/or provide guidance and technical direction to multidisciplinary project teams in a growing, dynamic environment.