Director of Energy Systems

About the Role

As Director of Energy Systems, you will own Brelle’s technical strategy and execution across battery engineering and system architecture. You will guide a cross-functional team spanning mechanical, electrical, thermal, and simulation disciplines, and drive the key design decisions that shape our next-generation products.

This role blends deep technical judgment with team leadership. We’re looking for someone who has shipped production battery systems—ideally in high-performance environments—and understands how to build and scale a world-class engineering team.

• Own the development of new module and pack architectures, including electromechanical systems, thermal management, safety systems, DFM, and product-level interfaces
• Make architecture trade-offs across energy density, thermal performance, weight, cost, safety, and manufacturability
• Define and maintain the battery systems technology charter, aligning technical investments with Brelle’s product roadmap
• Plan and manage the annual budget for the energy systems team

• Establish engineering processes, design standards, and review cadences that embed safety and quality into the foundation of rapid iteration cycles
• Own technical program management for battery development—setting milestones, managing dependencies, and ensuring timely delivery of hardware and analysis
• Lead DFMEA, DVP&R, and design release processes through production launch
• Ensure designs meet certification and homologation requirements

• Build and scale a world-class engineering team by attracting, developing, and retaining exceptional talent who thrive in a high-performance environment
• Foster a culture of technical excellence, intellectual honesty, and relentless improvement—where engineers are empowered to challenge assumptions and pursue novel solutions at rapid pace

• 10+ years of experience in battery pack/module design or powertrain development
• Bachelor's or Master's degree in Mechanical Engineering, Electrical Engineering, or a related field
• Deep technical expertise across battery system architecture: cell integration, thermal management, HV safety, and structural design
• Advanced CAD proficiency (CATIA, NX, or Solid Works) with the ability to engage at the design detail level
• Strong understanding of DFM across multiple processes: injection molding, stamping, casting, composites, machining
• Deep knowledge of materials science and advanced manufacturing processes
• Experience at high-performance or motor sport programs (Formula E, hypercar, aerospace) where weight, thermal performance, and reliability are pushed to extremes

• Fundamentally Curious – You break complex problems down to first principles and are energized by hard problems worth solving at scale
• A Builder of Exceptional Teams – You attract world-class talent, set exceptionally high standards, and create an environment where engineers do the best work of their careers
• Autonomous and Decisive – You take ownership of ambiguity, make informed calls, and drive execution with conviction. You empower your team to do the same, creating a culture of accountability and bias for action

• Base Salary: $185,000 – $230,000. Compensation may vary based on experience, training, education, and scope of the role.
• Founding Engineer equity participation through Employee Incentive Plan

• Medical (HMO, PPO), Dental, and Vision
• 401(k)
• Flexible PTO

• Team meals 2x per week
• Monthly team events