Liquid Cooling Systems Engineer

JLL empowers you to shape a brighter way
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Our people at JLL and JLL Technologies are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. We are committed to hiring the best, most talented people and empowering them to thrive, grow meaningful careers and to find a place where they belong. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.

As a Water Specialist for Rack Installations at JLL, you will serve as the technical expert responsible for managing sophisticated water and coolant systems that enable cutting‑edge liquid cooling infrastructure in mission‑critical data center environments. This specialized role combines advanced mechanical engineering principles with deep expertise in water chemistry, fluid dynamics, and thermal management to ensure optimal performance of rack‑level cooling systems.

At JLL, we are collectively shaping a brighter way — for our clients, ourselves and our fellow employees, and your technical mastery will be essential in implementing innovative cooling solutions that support the next generation of high-density computing environments. You'll oversee complex water distribution systems, develop comprehensive water treatment programs, and lead emergency response initiatives while ensuring strict compliance with industry standards and environmental regulations.

We embrace more innovative ways of working and prioritize opportunities to strengthen and advance your career, providing you with the platform to apply cutting‑edge fluid system technologies while mentoring technical teams and driving continuous improvement initiatives. This role offers the perfect blend of technical expertise and strategic thinking, allowing you to shape the future of liquid cooling operations while advancing sustainable water management practices in critical facility environments.

• Apply advanced mechanical engineering principles to design and optimize water distribution systems for high‑density server environments including CDU sizing and thermal load management
• Oversee comprehensive water distribution infrastructure including cooling distribution units, pumps, heat exchangers, and piping systems to maintain optimal cooling performance
• Develop and execute sophisticated water treatment programs including chemical management, pH control, conductivity monitoring, and microbial content testing
• Conduct regular performance analyses of water cooling systems while monitoring and optimizing flow rates, temperatures, and pressure differentials across rack installations
• Lead preventive maintenance programs for water systems including filtration schedules, chemical dosing protocols, and comprehensive equipment servicing
• Implement water system efficiency initiatives designed to reduce Power Usage Effectiveness while analyzing thermal performance data for high‑density rack environments
• Ensure strict adherence to water system standards and environmental regulations while overseeing safety protocols including spill containment and leak detection procedures
• Mentor and guide facility technicians and engineers on advanced water system operations, chemistry principles, and emergency response procedures
• Lead emergency response coordination for water‑related incidents including system failures, contamination events, and critical cooling system malfunctions

• Minimum 5 years of technical experience in water treatment, mechanical systems, or critical facility operations with proven expertise in fluid management
• Advanced knowledge of water chemistry principles, chemical treatment protocols, and comprehensive fluid analysis procedures
• Hands‑on experience with liquid cooling systems, cooling distribution units, and thermal management technologies in data center environments
• Strong analytical capabilities for water system performance optimization, troubleshooting complex issues, and implementing effective solutions
• Demonstrated…