L2 Data Center Technician - Cooling Specialist
FluidStack
Location
New York State
Employment Type
Full time
Department
Data Center Operations
About Fluidstack
Fluidstack is the AI Cloud Platform. We build GPU supercomputers for top AI labs, governments, and enterprises. Our customers include Mistral, Poolside, Black Forest Labs, Meta, and more.
Our team is highly motivated, and focused on providing a world class supercomputing experience. We put our customers first in everything we do, working hard to not just win the sale, but to win repeated business and customer referrals.
We hold ourselves and each other to high standards. We expect you to care deeply about the work you do, the products you build, and the experience our customers have in every interaction with us.
You must work hard, take ownership from inception to delivery, and approach every problem with an open mind and a positive attitude. We value effectiveness, competence, and a growth mindset.
About the Role
We are seeking a Data Center Technician - Cooling Specialist to join our Data Center Operations team. This role is critical to maintaining the reliability and efficiency of our liquid cooling infrastructure that supports our high-performance AI computing platforms. You will be responsible for the operation, maintenance, and troubleshooting of direct liquid cooling systems that keep our GPU supercomputers running at optimal performance.
Focus
Perform daily maintenance and monitoring of liquid cooling systems including leak detection through visual inspections and automated alert systems
Execute weekly visual inspections of coolant systems for all TPU nodes to ensure system integrity and prevent failures
Respond to cooling system incidents by performing node swaps or manifold replacements, and coordinate with vendors for complex repairs after safely shutting down affected racks
Maintain and operate Cooling Distribution Units (CDUs) from major vendors including Vertiv, Motivair, CoolIT Systems, and Asetek
Document all maintenance activities, system performance metrics, and incident reports to maintain compliance and improve system reliability
About You
2+ years of hands-on experience with data center cooling systems, preferably direct liquid cooling technology
Strong understanding of cooling system components including manifolds, quick disconnects, coolant distribution, and leak detection systems
Demonstrated ability to troubleshoot mechanical systems and work safely with liquid cooling infrastructure
Experience working with CDU systems from vendors such as Vertiv, Motivair, or similar manufacturers
Excellent attention to detail with the ability to identify potential issues before they become critical failures
Nice to haves
Certification in HVAC, mechanical systems, or related technical field
Experience with high-density computing environments and GPU/TPU cooling requirements
Knowledge of coolant chemistry and treatment procedures for closed-loop systems
Familiarity with DCIM tools and monitoring systems for cooling infrastructure
Experience in a 24/7 data center environment with on-call responsibilities
Benefits
Competitive total compensation package (cash + equity).
Retirement or pension plan, in line with local norms.
Health, dental, and vision insurance.
Generous PTO policy, in line with local norms.