Mechanical Maintenance Supervisor

Aster; Singapore; On-site; SGD 120,000 - 190,000; Full time

Job summary

Aster is seeking a senior leader to oversee mechanical maintenance in a petrochemical facility in Singapore. You will supervise a team of technicians, coordinate preventive, corrective and turnaround activities, and ensure compliance with safety and maintenance standards to keep plant operations running smoothly.

You will lead troubleshooting, coordinate with Reliability Engineering, and drive continuous improvement in maintenance planning and execution.

Qualifications

• Must have hands-on experience with rotating equipment and piping systems.
• Ability to read mechanical drawings, P&IDs and technical manuals.
• Strong leadership and frontline supervision experience in maintenance.
• Experience in planned, corrective and turnaround maintenance environments.

Responsibilities

• Lead and deploy mechanical technicians in preventive, corrective, breakdown and turnaround activities.
• Set daily priorities, allocate work, monitor progress and ensure safe, high-quality execution.
• Oversee overhaul, inspection, testing and reinstatement of rotating equipment (pumps, compressors, gearboxes, valves, etc.).
• Ensure compliance with OE requirements, process safety, permit-to-work and lock-out/tag-out.
• Verify measurements, acceptance criteria and hand-back readiness to Operations.
• Lead troubleshooting and coordinate with Reliability Engineering, Inspection and vendors as needed.
• Contribute to root-cause analyses and implement corrective actions.
• Support planning meetings with input on resources, constraints and plan quality.
• Coordinate daily maintenance execution with Operations, Planning and contractors.
• Ensure SAP work orders, findings and history are completed accurately.
• Coach technicians and address performance or non-compliance issues.

Skills

Rotating equipment

P&IDs reading

Troubleshooting

Leadership

Maintenance planning

Compliance

Education

Diploma in Mechanical Engineering

Bachelor's degree in Mechanical Engineering

Tools

SAP Plant Maintenance

Job description

This is a leadership role responsible for supervising and coordinating mechanical maintenance activities within our petrochemical facility. The successful candidate will lead a team of mechanical technicians, ensuring the safe, efficient, and effective execution of planned, corrective, and breakdown maintenance. The role also plays a critical part in maintaining equipment reliability, enforcing maintenance standards, and supporting continuous plant operations through effective troubleshooting, equipment reinstatement, and maintenance execution.

Key Responsibilities

• Lead, supervise and deploy mechanical technicians in preventive, corrective, breakdown and turnaround maintenance activities.
• Set daily work priorities, allocate work to technicians, monitor job progress, workmanship and completion, ensuring work is executed safely and effectively.
• Supervise the overhaul, repair, inspection, testing and reinstatement of mechanical equipment, including pumps, compressors, blowers, extruders, gearboxes, mechanical seals, valves, piping systems and associated equipment.
• Enforce compliance with company Operational Excellence (OE) requirements, process safety standards, permit-to-work requirements, isolation and lock-out/tag-out requirements, lifting practices, maintenance procedures and statutory requirements.
• Ensure maintenance work is completed in accordance with approved job plans, drawings, technical manuals, procedures and applicable engineering standards.
• Verify critical measurements, inspection hold points, clearances, alignment requirements, assembly checks and acceptance criteria and confirm equipment is mechanically safe and ready for hand back to Operations.
• Lead first-line troubleshooting and technical assessment of mechanical equipment failures, and determine when support from Reliability Engineering, Inspection, Mechanical Superintendent, equipment vendors or external specialists is required.
• Participate in equipment-failure investigations and structured root-cause analyses and ensure assigned corrective actions are implemented effectively.
• Support weekly maintenance planning and scheduling meetings by providing technical input, technician availability, execution constraints, work progress and feedback on job-plan quality.
• Coordinate daily maintenance execution with Operations, Maintenance Planning, Reliability Engineering, Inspection, contractors and other maintenance disciplines.
• Ensure accurate and timely completion of SAP work orders, maintenance findings, equipment-condition reports, follow-up notifications and maintenance history.
• Coach and assess mechanical technicians, set clear performance expectations, and address poor performance, non-compliance or unacceptable workmanship in a fair and consistent manner.

Qualifications and Experience

• Minimum Diploma in Mechanical Engineering, Mechanical Technology or a related mechanical discipline.
• A bachelor’s degree in mechanical engineering or a related discipline, supported by relevant hands-on plant maintenance and frontline supervisory experience, will be an added advantage.
• At least 10 years of relevant mechanical maintenance experience in the petrochemical, refinery, oil and gas, chemical-processing or comparable process industrial sector.
• Demonstrated experience in front-line leadership capacity such as Mechanical Supervisor, Acting supervisor or an equivalent role leading technicians and contractors.
• Practical experience in leading planned maintenance, breakdown response, major overhauls and reinstatement of rotating and mechanical equipment, preferably in shutdown or turnaround environments and under production-pressure conditions.

Skills & Competencies

• Strong practical and technical knowledge of rotating equipment, piping systems, valves and fixed equipment maintenance.
• Ability to read and interpret mechanical drawings, equipment cross-sectional drawings, P&IDs, technical manuals, job plans and maintenance procedures.
• Strong mechanical troubleshooting and problem-solving capability, with the ability to assess equipment failures, respond to abnormal equipment-condition findings and escalate technical risks appropriately.
• Ability to identify critical overhaul measurements, inspection hold points, alignment requirements, workmanship standards, equipment-acceptance criteria and verify equipment readiness for hand back to Operations.
• Ability to challenge unsupported technical conclusions, address poor workmanship or non-performance constructively and firmly, and coach technicians to strengthen capability.
• Working proficiency in SAP Plant Maintenance Module or similar Computerized Maintenance Management Systems, with the ability to document maintenance findings and follow up requirements accurately.