JOB TITLE: 3 openings here
1- Principal Data Center Mechanical Engineer
1 - Lead Mechanical Engineer, Data Center Design
1- Mechanical Engineer, Data Center Engineering & Design
**TOP 3 SKILLS:**
" Bachelor's degree in Mechanical Engineering (advanced credential or PE/Chartered Engineer preferred).
" 7+ years of experience designing large-scale industrial or mission-critical facilities, specifically data centers.
" Demonstrated expertise in high-density cooling systems, including liquid-to-chip and immersion cooling.
" Proficiency in Revit / BIM for template creation and design development.
" Strong analytical skills, including CFD modeling and capacity planning.
" Proven ability to operate with extreme ownership and manage complex external relationships.
LOCATION: 3 openings. Need at least 1 in Austin, TX, and at least 1 in NYC. Expect up to 20% travel.
DURATION: 8+ month long contract, high chance to extend
RATE RANGE: Pay rate - Market rate, target $100-160/hr
POSITION SUMMARY:
The Lead Mechanical Engineer is a senior technical leader within Fluidstack's Design and Engineering team. You will define the mechanical cooling strategy and own the programmatic design from chip to chiller across a multi-site, multi-state portfolio of some of the world's largest AI data centers. This is an owner/developer role. You will set the technical direction for how Fluidstack cools tens of thousands of GPUs - spanning air-cooled and liquid-cooled architectures, chilled water systems, heat rejection, and in-row/in-rack thermal management. You will define the requirements for modular, prefabricated mechanical assemblies designed around rapid deployment and compute-refresh flexibility. Your mission: deliver scalable, reference-grade HVAC, liquid-cooling, and containment solutions that minimize PUE, maximize efficiency, and adapt to diverse global sites.
RESPONSIBILITIES:
Key Responsibilities
" Lead design and strategy for data center mechanical systems, including air, liquid, and hybrid cooling.
" Define and maintain mechanical design standards for high-density air, rear-door heat exchangers, cold-plate, and immersion cooling.
" Drive innovation to improve PUE, WUE, and overall energy efficiency.
" Own and update basis-of-design, master specifications, drawings, and sequence-of-operations.
" Oversee project-specific adaptations with external consultants and ensure quality through design reviews, inspections, and commissioning.
" Perform CFD modeling, airflow/capacity planning, and specify critical equipment (chillers, pumps, CRAH/CRAC, dry coolers).
" Advance sustainability initiatives: free cooling, water-side economizers, and waste-heat reuse.
" Collaborate with Electrical, Controls, and Construction teams at all design stages.
QUALIFICATIONS:
Basic Qualifications
" B.S. in Mechanical Engineering or equivalent technical discipline.
" 7+ years of experience designing mechanical/cooling systems for data centers, with significant exposure to hyperscale or high-performance computing facilities.
" Deep technical knowledge of chilled water systems, air-cooled and water-cooled chillers, direct liquid cooling, and heat rejection plant design.
" Experience leading or managing a mechanical engineering team and directing external MEP consultants through a full design lifecycle.
" Working command of ASHRAE TC 9.9 thermal guidelines, liquid cooling best practices, and relevant mechanical codes (IMC, ASME, NFPA). " Demonstrated ability to develop and enforce design standards, basis of design documents, and master specifications across a multi-site portfolio.
" Willingness to travel to project sites across the US (estimated 20-30%).
Preferred Qualifications
" Professional Engineer (PE) license or Chartered Engineer credential.
" Direct experience with modular or prefabricated mechanical system design and off-site manufacturing coordination.
" Hands-on CFD experience (6SigmaET, Ansys Icepak, Flotherm) and proficiency with Revit/BIM workflows.
" Experience with medium-voltage (4.16 kV+) chiller applications and 800VDC power distribution architectures in data centers.
" Background in owner/developer-side roles with direct accountability for system performance and reliability.
" Familiarity with FM Global requirements for mechanical systems in mission-critical facilities
BENEFITS SUMMARY: Individual compensation is determined by skills, qualifications, experience, and location. Compensation details listed in this posting reflect the base hourly rate or annual salary only, unless otherwise stated. In addition to base compensation, full-time roles are eligible for Medical, Dental, Vision, Commuter and 401K benefits with company matching.
IND123