Thermal Systems Engineer
Position Overview
GTI Energy is seeking a Senior Mechanical Engineer to lead mechanical and thermal system design for enclosed industrial products including BESS platforms, modular data centers, power skids, and integrated energy infrastructure.
Key Responsibilities
Thermal System Design & Cooling Integration
Design and integrate cooling systems for enclosed industrial equipment including BESS systems, modular data centers, power distribution equipment, and power generation platforms.
Size cooling systems based on actual equipment heat loads, thermal rejection requirements, and operating conditions.
Develop airflow strategies inside enclosed systems including ducting, circulation paths, pressure balancing intake/exhaust placement, and thermal zoning.
Select and integrate off-the-shelf cooling equipment including HVAC units, heat exchangers, fans, chillers, and thermal management components.
Mechanical System Design & Product Development
Own mechanical design from concept through production release including enclosure layouts, mounting systems, access requirements, structural interfaces, and equipment integration.
Create 3D CAD models, assemblies, manufacturing drawings, and Bill of Materials (BOMs) using SolidWorks and related engineering tools.
Design for manufacturability, assembly efficiency, serviceability, and long-term reliability.
Support integration of pumps, piping, cable routing, thermal barriers, and mechanical support systems.
Coordinate packaging constraints involving electrical systems, structural members, airflow, and maintenance access.
Analysis, Validation & Engineering Calculations
Perform thermal analysis, airflow modeling, and engineering calculations supporting cooling system performance.
Support Computational Fluid Dynamics (CFD) analysis and interpretation where applicable.
Validate mechanical and thermal performance through testing, prototype evaluation, and field feedback.
Ensure designs meet customer, regulatory, and operational requirements.
Cross-Functional Engineering Collaboration
Partner with Electrical Engineering, Structural Engineering, Manufacturing Engineering, NPI, Quality, and Operations teams throughout product development lifecycle.
Collaborate closely with manufacturing teams to ensure designs align with fabrication, welding, assembly, and integration capabilities.
Support prototype builds, pilot programs, and production launch activities.
Work directly with Supply Chain and vendors on component selection, manufacturability, and technical problem solving.
Design for Manufacturing (DFM) & Production Support
Drive DFM initiatives focused on reducing complexity, improving repeatability, and supporting scalable production.
Resolve production issues quickly and support continuous product improvement efforts.
Standardize mechanical design approaches, cooling architectures, and reusable engineering solutions where possible.
Continuous Improvement & Technical Leadership
Support Root Cause Analysis for field issues, thermal failures, or performance deviations.
Contribute to engineering standards, design guides, and best practices across product lines.
Mentor junior engineers and provide technical leadership on mechanical and thermal design challenges.
Drive continuous improvement in performance, cost, manufacturability, and reliability.
Requirements
Bachelor’s degree in Mechanical Engineering or related engineering discipline.
6-12+ years of experience in mechanical engineering, thermal systems design, or product development within industrial or engineered product environments.
Strong experience with thermal management for battery systems, power electronics, industrial skids, generator enclosures, modular data centers, switchgear, or similar products.
Experience sizing cooling systems based on actual equipment heat loads and operational requirements.
Strong understanding of airflow management inside enclosed systems.
Proficiency with SolidWorks or similar 3D CAD platforms.
Strong knowledge of manufacturability, fabrication methods, and industrial product integration.
Preferred Qualifications
Experience supporting BESS, modular data centers, power systems, or industrial energy infrastructure.
Experience with CFD analysis and thermal modeling tools.
Experience in sheet metal, weldments, enclosure design, or industrial packaging.
Experience in contract manufacturing or engineered-to-order product environments.
Familiarity with UL requirements, environmental testing, or industrial compliance standards.
Experience operating in fast-paced, high-growth engineering organizations.
Benefits & Perks
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.
A collaborative, fast-paced environment with strong operational and engineering leadership.
An employee-focused culture centered on safety, quality, accountability, and continuous improvement.