Mechanical Mission Critical HVAC Service Technician

COMPANY OVERVIEW Upchurch is a rapidly growing, full-service building engineering company providing mechanical, plumbing, HVAC, and electrical services across the southeastern United States. Founded in 1970 and headquartered in Horn Lake, MS, Upchurch has grown through both organic expansion and strategic acquisitions, establishing a strong reputation for quality, reliability, and service excellence. We offer end-to-end solutions—from design and installation to ongoing maintenance and emergency support—helping clients maximize building performance, energy efficiency, and equipment lifespan. Through our Data Center Mission Critical (DC|MC) business unit, Upchurch provides specialized operations and maintenance services focused on uptime, reliability, and lifecycle performance of data center infrastructure. This role supports colocation, hyperscale, enterprise, and edge data centers by executing disciplined preventive, corrective, and condition-based maintenance on mission-critical cooling and mechanical systems. POSITION SUMMARY The Mechanical HVAC Mission Critical Service Technician is responsible for maintaining, troubleshooting, and servicing mechanical and HVAC systems that directly support data center uptime and reliability. Unlike traditional comfort-cooling roles, this position operates in high-availability environments where procedural compliance, redundancy awareness, and precision execution are mandatory. Technicians perform scheduled preventive maintenance (PM), corrective maintenance (CM), and emergency response activities on mission-critical cooling based on SLAs of 2-8 hours and mechanical systems while adhering to strict Method of Procedure (MOP), safety, and change-management standards. KEY RESPONSIBILITIES - Perform preventive and corrective maintenance on data center mechanical systems, including but not limited to: - CRAH / CRAC units - Chilled water systems - Pumps, valves, strainers, and heat exchangers - Cooling towers, adiabatic systems, and fluid loops - DX, split, and supplemental cooling systems - Execute work through our field management system using approved MOPs, SOPs, and change-management processes. - Maintain system redundancy and awareness of upstream/downstream impacts. - Respond to alarms, degraded performance, and emergency service calls per SLA. - Document all work, readings, inspections, and system conditions accurately. - Follow strict safety protocols (LOTO, PPE, site rules, confined space, etc.). - Participate in on-call rotations and scheduled maintenance windows. - Complete required overall company and data center specific training via Upchurch University LMS DC|MC program. LEVEL DIFFERENTIATION & EXPECTATIONS Level I – Foundational Mission Critical Technician Primary Focus: Execution, safety, learning - Performs PM and basic CM tasks under supervision. - Supports inspections, filter changes, belt replacements, lubrication, and visual checks. - Learns data center environments, redundancy concepts, and uptime risk. - Accurately records readings and follows procedures step-by-step. - Escalates abnormal conditions promptly. - Developing familiarity with: - CRAH/CRAC fundamentals - Chilled water basics - Data center etiquette and live-site work Typical Experience - 0–2 years HVAC/mechanical experience - Entry into data center or critical environments Level II – Intermediate Mission Critical Technician Primary Focus: Independent execution, troubleshooting - Independently performs PM and CM on assigned systems. - Troubleshoots alarms, performance degradation, and control issues. - Executes approved MOPs with limited oversight. - Coordinates with controls, electrical, and operations teams. - Identifies early failure indicators and recommends corrective actions. - Begins system-level ownership of specific assets (e.g. CRAH, pumps). - Supports outage planning and maintenance window execution. Typical Experience - 2–5 years HVAC/mechanical experience - Prior data center, industrial, or critical…