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JLL Logo JLL · IT - Administration

Mechanical Building Engineer - Critical Environment

United States, Spartanburg · Job Posted February 21, 2026
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Job Description

As a Mechanical Building Engineer at JLL, you will play an essential role in supporting the sophisticated mechanical operations that keep critical data center and facility environments running at peak performance. This position offers an outstanding opportunity to build your expertise in advanced mechanical systems while working alongside experienced engineers who are dedicated to your professional growth and success. We believe the most effective teams are built when everyone is empowered to thrive, and in this role, you'll gain valuable hands-on experience with complex HVAC equipment, chillers, cooling systems, and environmental control technologies. You'll contribute to daily monitoring and maintenance activities while learning from senior engineers who will guide your development in critical facility operations.

Job Responsibility

  • Conduct daily mechanical system inspections including HVAC equipment, chillers, CRAC/CRAH units, and cooling systems to ensure optimal operational performance
  • Monitor critical mechanical parameters including temperatures, pressures, and flow rates, alerting senior staff to any abnormal conditions requiring attention
  • Execute basic preventive maintenance tasks on mechanical equipment following established procedures and safety protocols
  • Assist with routine maintenance activities including filter changes, belt inspections, and mechanical component servicing under senior engineer supervision
  • Support chilled water systems, air handling units, and cooling tower operations while learning thermal management principles for data center environments
  • Participate in mechanical troubleshooting activities under supervision, gaining valuable experience with diagnostic procedures and problem-solving techniques
  • Follow established safety protocols for all mechanical work including lockout/tagout procedures and hazardous material handling
  • Manage mechanical work orders through CMMS systems and assist with vendor coordination for routine maintenance activities
  • Maintain accurate documentation of maintenance activities, system performance data, and equipment status reports

Requirements

  • Minimum 2-4 years of technical experience in building mechanical systems with background in HVAC, plumbing, or related mechanical disciplines
  • Solid understanding of mechanical fundamentals including HVAC principles, equipment operation, and basic troubleshooting techniques
  • Universal EPA 608 Certification or demonstrated ability to obtain certification within 90 days of employment
  • Strong commitment to learning and professional development while working under supervision of senior engineers
  • Effective verbal and written communication skills for accurate documentation, reporting, and team collaboration
  • Working knowledge of computer applications including MS Office Suite and computerized maintenance management systems
  • Physical ability to lift 50-80 pounds, work at heights up to 30 feet, and operate in extreme temperature conditions and mechanical equipment areas
  • Availability for emergency response calls and flexibility to work holidays and varied schedules as operational needs require

Nice to have

  • At least 1 year of experience in data center, critical facility, or similar high-performance environment preferred
  • Associate degree in mechanical technology, HVAC engineering technology, or equivalent technical education and training
  • Completion of 2 years of trades school or documented apprenticeship program in relevant mechanical craft skills
  • Basic knowledge of CRAC/CRAH system operations with Liebert equipment experience strongly preferred
  • Familiarity with building automation systems and integrated facility management technologies
  • Previous experience working with computerized maintenance management systems for work order processing and documentation
  • Strong customer service and interpersonal skills for supporting facility operations and stakeholder interactions

What we offer

  • 401(k) plan with matching company contributions
  • Comprehensive Medical, Dental & Vision Care
  • Paid parental leave at 100% of salary
  • Paid Time Off and Company Holidays
  • Early access to earned wages through Daily Pay
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