Location: Los Alamos, NM
Cap-Exempt H-1B Position — No lottery required
**What You Will Do** The Dynamic Structure, Design, & Engineering (J-2) Group is a core component of Los Alamos National Laboratory's Integrated Weapons Experiments (J) Division. The J-2 Analysis Team's mission is to provide high-fidelity engineering analyses for the design, evaluation, and certification of shock and fragment-loaded systems and structures that are critical to the nation's Stockpile Stewardship and Modernization efforts. **R&D Engineer 3 ($128,000 - $215,900)** In this role, the selected candidate will be a technical resource who translates complex physics-based phenomena into robust, code-compliant engineering solutions. Leveraging state-of-the-art finite element (FEM) tools, advanced fatigue and fracture mechanics methodologies, and rigorous fitness-for-service (FFS) assessments, the selected candidate will develop and execute analytical workflows that underpin design decisions, risk assessments, and life extension strategies for impulsively loaded vessels and hardware. Work at this level is performed with appropriate guidance and collaboration, including engagement with senior engineers and subject matter experts to ensure technical quality, consistency, and alignment with established methodologies. **R&D Engineer 4 ($153,600 - $266,500)** In addition to the responsibilities outlined at Level 3, a candidate selected at this level will be expected to lead and advance engineering rigor and method development across the J-2 Analysis Team. This includes establishing and maintaining best practice standards, developing and enforcing verification and validation (V&V) protocols, and ensuring high-quality technical documentation. The candidate will independently lead complex or high-consequence analyses, exercising sound technical judgment in the absence of prescribed methods or precedents. They will lead peer reviews, provide technical mentorship to junior analysts, and serve as a key resource for challenging analytical efforts. **What You Need** **Minimu