Fluidstack
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 l2 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.
Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans' status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.
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 l2 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.
Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans' status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.