Lead Mechanical Product Engineer

Giga Energy

. Own mechanical requirements, design decisions, specifications, drawings, bills of materials, and engineering changes for all Mechanical equipment and components .

Posted 10/2/2026full-timeUnited StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Mechanical Engineering with a focus on HVAC and refrigeration systems, including design, testing, and integration of thermal equipment. Proven ability to collaborate across teams and manage product development from concept through production and field improvement.

Highest-signal resume keywords

Mechanical Engineering DegreeHVAC Design ExperienceHeat Transfer KnowledgeEngineering Calculations ProficiencyTechnical Proposal Preparation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Mechanical DesignThermal Equipment EngineeringCooling Capacity CalculationsPiping DesignComponent SelectionSchematic ReviewTechnical Specification DevelopmentFactory Acceptance TestingField TroubleshootingRefrigeration Systems Knowledge

Soft Skills

Cross-Functional CollaborationTechnical CommunicationCustomer EngagementProblem SolvingOwnership

Industry Keywords

HVACRefrigerationLiquid CoolingThermal EquipmentData Center CoolingAir-Cooled ChillersCooling Distribution UnitsGlycol SystemsHigh-Density Compute EnvironmentsMission-Critical Applications

Tech Stack

Tools & technologies

Airflow

About the role

Key responsibilities & impact

Own mechanical requirements, design decisions, specifications, drawings, bills of materials, and engineering changes for all Mechanical equipment and components
Develop and validate cooling capacity, heat transfer, airflow, fluid flow, pressure drop, piping, and equipment selection calculations
Lead mechanical integration of chillers, cooling distribution units, fan wall units, piping, and pod infrastructure
Coordinate interfaces with electrical, controls, monitoring, and fire protection teams
Review designs for performance, reliability, serviceability, manufacturability, and applicable code and certification requirements
Work with suppliers and manufacturing partners on component selection, technical issues, design reviews, and production readiness
Define and review product testing, factory acceptance criteria, and corrective actions
Use field and customer feedback to improve products
Meet with prospective customers to understand cooling loads, site conditions, operating requirements, and integration constraints
Recommend product configurations and help prepare technical proposals, specifications, submittals, responses to customer questions, and engineering input for bids
Create the bridge between the US-based engineering team and the product team in China, guiding products from requirements and design through manufacturing, testing, and field improvement
Provide technical support to the in-house engineering team and prospective customers selecting and integrating products

Requirements

What you’ll need

Bachelor’s degree in Mechanical Engineering or a closely related field
At least 5-7 years of experience designing or engineering HVAC, refrigeration, liquid cooling, or other thermal equipment
Demonstrated ownership of a mechanical product or complex system through design release, production, and issue resolution
Strong knowledge of heat transfer, refrigeration, hydronics, pumps, piping, airflow, and component selection
Experience producing and reviewing engineering calculations, schematics, drawings, and technical specifications
Ability to explain technical tradeoffs clearly to customers and work across engineering, sales, manufacturing, and supplier teams
Bonus: Experience with data center or other mission-critical cooling applications
Bonus: Experience with air-cooled chillers, cooling distribution units, free cooling, glycol systems, or high-density compute environments
Bonus: Familiarity with product testing, factory acceptance testing, commissioning, and field troubleshooting
Bonus: Experience working with external manufacturing partners and managing design changes across product variants

Benefits

Comp & perks

Subsidized health, dental, and vision insurance
Equity (options) in a rapidly growing startup
401(k) with 4% employer match
Unlimited PTO
Parental leave
Healthcare and Dependent Care Flexible Spending Accounts (FSA) or Health Savings Account (HSA)
Commuter benefits, where applicable
Opportunities to collaborate in person at periodic team and company on-sites