Senior Maintenance Engineer – Injection Molding & Chillers
Job Summary Auto Truck Co. is looking for a highly experienced Senior Maintenance Engineer with more than 10 years of hands-on experience in the maintenance of plastic injection molding machines, industrial chillers, hydraulic systems, electrical systems, and factory utilities . The role is responsible for preventive maintenance, troubleshooting, breakdown repair, machine reliability, and reducing production downtime. The ideal candidate must be technically strong, practical, and capable of working directly on machines and leading maintenance technicians. Key Responsibilities Perform and supervise preventive and corrective maintenance for plastic injection molding machines .
Troubleshoot mechanical, hydraulic, electrical, and control problems.
Diagnose breakdowns and restore production quickly.
Maintain and troubleshoot: Hydraulic pumps
Hydraulic valves
Cylinders
Pressure systems
Oil cooling systems
Lubrication systems
Maintain electrical systems including: Motors
Contactors
Relays
Sensors
Heaters
Temperature controllers
Limit switches
VFDs / Inverters
Control panels
Troubleshoot machine functions including: Clamping
Injection
Screw rotation
Plasticizing
Ejection
Mold opening and closing
Hydraulic pressure and speed
Heating zones
Temperature control
Perform maintenance and troubleshooting of industrial chillers .
Maintain compressors, pumps, condensers, evaporators, cooling circuits, and water circulation systems.
Monitor cooling-water temperature, flow, and pressure.
Diagnose refrigeration and cooling-system faults.
Prepare and manage preventive maintenance schedules.
Maintain detailed machine maintenance history.
Analyze repeated breakdowns and implement permanent corrective actions.
Reduce downtime and improve machine availability.
Manage critical spare parts and maintenance stock.
Coordinate maintenance activities with production.
Support machine installation, relocation, commissioning, and upgrades.
Lead and train maintenance technicians.
Ensure maintenance activities follow safety procedures.
Job Requirements Bachelor's degree in Mechanical Engineering, Mechatronics Engineering, Electrical Engineering , or a related field.
Minimum 10 years of maintenance experience in a manufacturing environment.
Strong hands-on experience with plastic injection molding machines .
Strong knowledge of hydraulic systems.
Strong practical experience with industrial chillers and refrigeration systems.
Good knowledge of electrical systems, control panels, motors, heaters, sensors, and VFDs.
Ability to read: Hydraulic diagrams
Electrical diagrams
Machine manuals
Technical drawings
Strong fault-finding and troubleshooting skills.
Strong leadership and team-management ability.
Ability to work under pressure during machine breakdowns.
Required Skills Injection Molding Machine Maintenance
Hydraulic Systems
Hydraulic Pumps & Valves
Industrial Chillers
Refrigeration Systems
Electrical Maintenance
Control Panels
Motors & VFDs
Sensors & Limit Switches
Heating Systems
Temperature Controllers
Preventive Maintenance
Corrective Maintenance
Breakdown Troubleshooting
PLC Troubleshooting
Mechanical Maintenance
Machine Installation
Spare Parts Management
Root Cause Analysis
Downtime Reduction
Maintenance Team Leadership
Preferred Experience Candidates with experience in the following will be highly preferred: Automotive parts manufacturing
Plastic injection molding factories
Large-tonnage injection molding machines
Negri Bossi or similar injection molding machines
Industrial chillers
Hydraulic systems
PLC-controlled manufacturing equipment
Factory utilities
Preventive maintenance systems