Senior Mechanical Engineer - Battery Energy Storage Systems

GTI Fabrication • Buffalo, NY

1d

About The Position

GTI is a contract manufacturing partner supporting customers in renewable energy, power generation, infrastructure, and industrial systems. We fabricate custom designed, purpose-built enclosures and skids for our customers and perform mechanical and electrical integration in-house, delivering a true turn-key product to our customers. Our scope spans Engineering, prototype builds, through full production, requiring teams that can move fast, adapt, and execute with precision. GTI Values: Safey I Quality I Customer Obsession I Speed I Agility. 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. The ideal candidate will have experience designing industrial equipment enclosures, structural steel assemblies, thermal management systems, and modular infrastructure platforms within fabrication-driven manufacturing environments.

Requirements

• 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
• Experience supporting high-power electrical equipment packaging or industrial enclosures
• Strong knowledge of engineering documentation, BOM development, and revision control

Nice To Haves

• 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

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.
• Coordinate 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.
• Support thermal management strategies for high-power electrical equipment operating within compact enclosure environments.
• 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.
• Coordinate 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.
• Participate in design reviews, prototype evaluations, and production launch activities.
• Support standardization of enclosure architectures, structural design practices, and modular packaging strategies across BESS product lines.
• Technical Leadership: Mentor CAD technicians and junior engineers on enclosure design, modular packaging strategies, and design best practices.
• Support development of engineering documentation, design standards, and manufacturing release packages.
• Provide technical guidance throughout design, fabrication, integration, and production activities.

Benefits

• Medical, dental, and vision insurance
• 401(k) with company match (where applicable)
• Paid Time Off (PTO) and paid holidays
• Sick time in accordance with state and local requirements
• Company-paid life insurance and disability coverage
• Career advancement opportunities within a rapidly growing organization
• Exposure to advanced manufacturing, modular infrastructure, and large-scale industrial projects
• Collaborative, fast-paced environment with strong operational and engineering leadership
• Employee-focused culture centered on safety, quality, accountability, and continuous improvement

What This Job Offers

• Job Type: Full-time
• Career Level: Senior