Senior Mechanical Engineer - Battery Energy Storage Systems

Position Summary

GTI is seeking a Senior Mechanical Engineer to lead the mechanical design of Battery Energy Storage System enclosures and integrated platforms. This role is responsible for developing manufacturable steel structures, equipment layouts, thermal management strategies, and serviceable enclosure designs supporting high-power battery and inverter equipment.

Key Responsibilities

• Mechanical Design & System Packaging
  • Design steel enclosures and structural platforms housing battery cabinets, PCS inverters, transformers, and electrical distribution equipment
  • Develop equipment layouts supporting service access, ventilation, thermal separation, and cable routing zones
  • Design modular steel assemblies, sheet metal components, structural weldments, and integrated equipment platforms using SolidWorks
  • Cook with mechanical packaging and enclosure design activities supporting modular BESS integration
• Structural, Thermal & CFD Analysis
  • Perform structural analysis and FEA on welded assemblies, lifting structures, anchoring systems, and transport frames
  • Perform CFD and thermal analysis supporting battery cooling, HVAC airflow, and heat rejection within enclosed systems
  • Evaluate structural integrity, airflow performance, and manufacturability throughout product development activities
• Cross-Functional Integration
  • Collaborate with Electrical Engineering teams to coordinate penetrations, cable trays, grounding provisions, equipment spacing, and integration requirements
  • Cook with Manufacturing, Quality, and Integration teams to ensure designs support fabrication, assembly, welding, and field installation requirements
  • Apply Design for Manufacturing (DFM) principles supporting efficient production and integration workflows
  • Support prototype builds, factory integration activities, and NPI phase gate reviews
• Compliance, Testing & Production Support
  • Ensure designs support UL 9540 energy storage system certification requirements and thermal event mitigation strategies
  • Support root cause analysis and corrective actions related to mechanical issues identified during testing, integration, or production
  • Support design reviews, prototype evaluations, and production launch activities
  • Support standardization of enclosure architectures, structural design practices, and modular packaging strategies across BESS product lines

Requirements

• Required Qualifications:
  • Bachelor’s degree in Mechanical Engineering
  • 7+ years of experience designing industrial equipment, energy systems, or modular infrastructure
  • Strong SolidWorks experience including weldments, sheet metal, and large assemblies
  • Experience with structural steel design, thermal analysis, and HVAC packaging
  • Strong knowledge of engineering documentation, BOM development, and revision control
• Preferred Qualifications:
  • Experience designing battery energy storage systems or power conversion equipment
  • Familiarity with UL 9540, UL 9540A, and NFPA 855 frameworks
  • Experience designing modular or containerized infrastructure systems