HVAC Mechanical Systems Technician

ROLE PURPOSE
Lead safe, reliable operation and maintenance of site mechanical and facility systems that support continuous electric-vehicle battery manufacturing. The Team Lead coordinates shift execution, directs technicians, protects environmental conditions, and escalates conditions that could affect safety, quality, or KPI’s.

What you will do

The Mechanical Systems Technician Team Lead is a working shift leader within the Johnson Controls facility operations team supporting the SK on Tennessee battery manufacturing campus. The position provides hands-on mechanical leadership for HVAC and other MEP systems within the O&M scope, while coordinating closely with SK site stakeholders, production support teams, engineering, safety, security, fire protection, controls, and approved contractors.

The role combines Journeyman-level troubleshooting with shift supervision. The successful candidate will organize daily work, respond to alarms and abnormal conditions, verify system restoration, document work accurately, and maintain clear turnover between shifts in a 24/7 manufacturing environment.

How you will do it

Lead the assigned shift and provide daily direction to mechanical and multi-craft technicians, including work assignments, field support, job-site verification, coaching, and shift turnover.

Prioritize corrective and preventive work based on life safety, environmental control, production risk, equipment criticality, customer impact, and available resources.

Monitor and maintain HVAC and mechanical utility systems serving the battery plant and associated support buildings, including air-handling and exhaust systems, chilled-water and heating-hot-water systems, steam system and condensate pumps, valves, hydronic loops, industrial dehumidifiers, chillers, precision cooling/CRAC equipment, and related controls.

Use the site BAS/BMS and local equipment interfaces to review alarms, trends, operating status, setpoints, and equipment response. Coordinate controls troubleshooting when field conditions do not match commanded operation.

Respond to temperature, humidity, pressure, ventilation, water-leak, equipment-failure, fire/life-safety, and other facility alarms; stabilize the condition, protect affected areas, and follow the site escalation process.

Perform and lead troubleshooting using drawings, sequences of operation, P&IDs, mechanical schedules, control diagrams, electrical schematics, manufacturer literature, and field measurements.

Plan and execute safe equipment isolation, lockout/tagout, testing, return-to-service, and post-maintenance operational verification in accordance with site procedures.

Coordinate maintenance activities with SK operations and affected stakeholders to minimize interruption to manufacturing and preserve required environmental conditions.

Create, review, assign, and close CMMS work orders with clear problem statements, failure findings, labor, materials, readings, corrective actions, and follow-up recommendations.

Conduct field rounds and inspections in production support areas, utility spaces, mechanical rooms, rooftops, mezzanines, server/IT support spaces, guard houses, safety/quality buildings, and other O&M-covered facilities.

Lead preventive and predictive maintenance execution; identify repeat failures, backlog risks, obsolete components, and opportunities to improve equipment reliability and maintainability.

Coordinate approved contractors for service, repair, inspection, testing, and renovation work. Verify site orientation, permits, scope boundaries, work quality, housekeeping, and restoration before closeout.

Maintain shift logs and provide concise turnover of active alarms, impairments, bypasses, equipment out of service, temporary repairs, contractor activity, critical parts, and open customer issues.

Support emergency response and after-hours call-in requirements. Remain available for varying shifts, weekends, holidays, shutdowns, and special maintenance events as assigned.

Requisition parts, tools, rental equipment, and consumables; support inventory accuracy and identification of critical mechanical spares.

Promote a strong safety culture through pre-job planning, hazard recognition, stop-work responsibility, proper PPE, control of hazardous energy (LOTO), confined-space controls, work-at-height controls, electrical safety boundaries, and good housekeeping.

Perform hands-on troubleshooting, repair, adjustment, and maintenance when required, while maintaining team-lead responsibility for safe execution and communication.

Complete other site facility operations duties as assigned within the O&M scope.

SK on Tennessee Site Expectations

Treat environmental conditions and utility availability as production-critical. Escalate abnormal temperature, humidity, pressure, airflow, cooling, heating, or water conditions before they become a manufacturing interruption.

Maintain clear separation between base-building/O&M responsibilities and manufacturing or production-equipment responsibilities; coordinate ownership before work begins when scope is unclear.

Use approved site communication and escalation channels for safety events, life-safety impairments, utility interruptions, environmental excursions, critical alarms, and equipment outages.

Protect clean and controlled areas from dust, debris, moisture, contamination, and uncontrolled access during maintenance activities.

Coordinate system shutdowns, overrides, alarm suppressions, valve lineups, and return-to-normal activities with affected stakeholders and document all temporary conditions.

Provide customer-ready updates that identify the affected system or area, current condition, operational risk, actions underway, support needed, and next decision point.

What we look for

Preferred Qualifications

·  Ability to lift and carry up to 50 lb., climb ladders and stairs, work from approved aerial lifts, access rooftops and mezzanines, and work in mechanical rooms and confined spaces when properly trained and permitted.

·  Ability to work around operating industrial equipment and in areas subject to heat, cold, noise, vibration, dust, and outdoor weather conditions while using required PPE.

·  Ability to work assigned shifts and support weekends, holidays, planned shutdowns, emergency response, and on-call rotation requirements.

Success in This Role

·  Safe work execution with complete pre-job planning and no bypassing of site controls.

·  Accurate work-order documentation, reliable shift turnover, and timely escalation of production-critical risk.

·  Improved preventive-maintenance completion, reduced repeat failures, effective backlog control, and verified restoration of equipment to normal operation.

·  Consistent customer communication and ownership from initial response through final closeout.

Who we are

Johnson Controls is an equal employment opportunity and affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, status as a qualified individual with a disability, or any other characteristic protected by law. For more information, please view EEO is the Law . If you are an individual with a disability and you require an accommodation during the application process, please visit www.johnsoncontrols.com/tomorrowneedsyou .

HIRING SALARY RANGE : $80,600 - $100,800 (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data.)  This position includes a competitive benefits package. The posted salary range reflects the target compensation for this role. However, we recognize that exceptional candidates may bring unique skills and experiences that exceed the typical profile. If you believe your background warrants consideration beyond the stated range, we encourage you to apply. To support an efficient and fair hiring process, we may use technology assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers. For details, please visit the About Us tab on the

Johnson Controls Careers site at https://jobs.johnsoncontrols.com/about-us

Johnson Controls International plc. is an equal employment opportunity and affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, genetic information, sexual orientation, gender identity, status as a qualified individual with a disability or any other characteristic protected by law. To view more information about your equal opportunity and non-discrimination rights as a candidate, visit EEO is the Law . If you are an individual with a disability and you require an accommodation during the application process, please visit here .