Senior Mechanical Engineering Manager

Responsibilities

• Perform structural stress and fatigue analysis for mechanical assemblies, enclosures, and supporting infrastructure
• Lead and review FEA models to validate designs under static, dynamic, thermal, and seismic loading
• Ensure mechanical and structural safety under operational, transportation, vibration, and environmental loads
• Evaluate failure modes and recommend design improvements for durability and reliability
• Collaborate with BESS, Power Electronics, and Controls teams on integrated system performance
• Develop and review mechanical documentation including calculations, reports, specifications, and as-built drawings
• Design HVAC systems and manage thermal design of enclosures, including temperature limits and humidity mitigation
• Participate in product design sprints and provide technical input based on lessons learned from installation, commissioning, and operations
• Travel up to 20% for product FAT inspection and site commissioning witnessing

Requirements

• Bachelor’s degree in Mechanical Engineering or similar technical field
• 15+ years of hands-on structural and mechanical engineering experience in project-based or industrial settings
• Strong experience performing stress analysis, fatigue analysis, and vibration assessment
• Demonstrated experience ensuring structural safety and compliance with engineering standards and codes
• Ability to interpret engineering drawings and develop detailed reports and calculations

Preferred Qualifications

• Experience with Power Electronics, UPS/mission critical applications, or utility-scale infrastructure
• Panel building mechanical design experience for power and controls/IT equipment

Benefits

• Competitive salary and annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays
• Professional development and growth opportunities

About the Company

ON.energy builds power infrastructure for the AI era, providing gigawatt-scale power technology deployed across hyper-scale campuses and validated by U.S. national labs and major utilities.