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About the Role

Own HVAC and mechanical system design for AI data center infrastructure from concept to construction documents, including load calculations, equipment selections, hydronic system modeling, and ductwork/piping sizing. Produce designs that are built quickly.

Responsibilities

• Lead detailed HVAC mechanical design for mission-critical data center facilities, from schematic design through construction documents
• Perform load calculations, psychrometric analysis, ductwork sizing, piping sizing, and equipment selections
• Model and analyze hydronic systems using PipeFlo or equivalent software
• Develop system models and energy analyses using Trane Trace, Carrier HAP, or similar tools
• Produce design documentation in AutoCAD and Revit MEP, maintaining coordination-ready models throughout design phases
• Apply ICC/UPC codes and applicable ASHRAE standards to ensure compliant, optimized designs
• Collaborate with other disciplines to integrate mechanical systems into the broader facility design
• Interface with equipment vendors and contractors to validate selections and support procurement
• Support construction administration, RFI responses, and submittal reviews

Skills

• AutoCAD
• Revit MEP
• Trane Trace
• Carrier HAP
• Load calculation software
• PipeFlo
• Hydronic system modeling software
• ICC/UPC codes
• ASHRAE standards (62.1, 90.1, 90.4)
• Load calculations
• Psychrometrics
• Piping sizing
• Ductwork sizing
• Equipment selection
• Mechanical cooling topologies (CRAC/CRAH units, chilled water plants, air-cooled chillers, water-side economization, air-side economization, evaporative/adiabatic cooling)
• High-density and liquid cooling approaches (direct liquid cooling, rear-door heat exchangers, immersion cooling)
• Hydronic system design (primary/secondary loops, variable flow systems, plant sequencing)
• CFD analysis for airflow and thermal modeling
• Integration of mechanical systems with electrical infrastructure (UPS, generators, switchgear)
• Commissioning experience (FAT, SAT, functional performance testing)
• Authoring design narratives
• Authoring basis-of-design documents
• Presenting to clients or stakeholders

Location

• San Francisco, CA
• Long Beach, CA
• Houston, TX

Work Type

• Onsite

Experience Level

• 3–5 years of professional HVAC design experience

Education Level

• Bachelor’s degree in Mechanical Engineering
• Professional Engineer (PE) license or actively pursuing licensure

Salary/Compensations

• $90,000—$122,000 USD

Benefits

• 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

About the Company

• Operate at high speed.
• Every team member contributes to impactful work without bureaucratic layers.
• Team of A-players defining AI infrastructure future.
• Giga is essential to the AI revolution, providing power infrastructure.
• Values antifragility, adapting quickly to change.
• Values high agency, proactively addressing challenges.
• Values execution, turning ideas into reality.
• Values bias to action, making timely decisions with incomplete information.
• Values speed, moving quickly to capitalize on opportunities.

Equal Opportunity

• Giga Energy is an equal opportunity employer committed to an inclusive and diverse workplace.
• We do not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic.
• Giga Energy complies with all applicable labor laws, including FEHA.
• Reasonable accommodations are provided for qualified individuals with disabilities.