Rivian is seeking a Sr. Staff Mechanical Design Engineer for the Battery Analysis team within Energy Storage Systems. This role focuses on providing technical leadership in dynamic deformation and thermal-structural analysis of battery packs and modules. The ideal candidate will leverage their expertise to inform design decisions and improve validation processes. Collaboration with various teams is essential to translate complex analyses into robust battery designs.

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Civil or Structural Engineering, Materials Engineering, or a related field.
• Significant professional experience applying CAE to mechanical, structural, thermal-structural, or durability problems in complex products.
• Strong understanding of mechanics of materials, finite-element methods, nonlinear behavior, thermal expansion, contact, material behavior, energy absorption, and failure modes.
• Demonstrated hands-on experience using LS-DYNA for explicit dynamic analysis.
• Demonstrated hands-on experience using OptiStruct for thermal-structural and structural analysis.

• Lead dynamic-deformation and thermal-structural CAE for battery pack and module designs across development and validation phases.
• Design and optimize multi-material vertical stack-ups to distribute concentrated impact loads and dissipate peak dynamic forces.
• Develop and improve explicit finite-element models for crash, impact, crush, drop, and other transient load cases.
• Execute simulation studies that support design tradeoffs, risk reduction, design verification, and production readiness.
• Correlate CAE predictions with component, module, pack, and vehicle-level test data and improve model fidelity.

• Employees at Rivian are often offered comprehensive health, dental, and vision insurance, a 401(k) with company match, ESPP and potential RSU grants, performance bonuses, and generous time off including paid parental and sick leave. Perks can include 24/7 mental-health coaching and therapy, Hinge Health for Anthem enrollees, tuition assistance and professional development, plus on-site food and a wide range of employee discounts on items like computers, mobile phones, home loans, and pet care.