Mechanical Maintenance Technician – Desalination

TradesApp; Doha; On-site; QAR 67,000 - 100,000; Full time

Job summary

TradesApp is seeking a Mechanical Maintenance Technician – Desalination to support the safe and reliable operation of a large-scale water treatment/desalination facility in Qatar. The role emphasizes mechanical maintenance of RO systems, pumps, valves, rotating equipment, and related plant machinery.

Responsibilities include preventive/corrective maintenance, equipment alignment and lubrication, CMMS reporting, and coordination with operations, electrical, and instrumentation teams to ensure

Qualifications

• Diploma or technical certificate in mechanical engineering or maintenance.
• 3–5+ years of experience in desalination, water treatment, power, or industrial facilities.
• Experience with RO desalination systems preferred.

Responsibilities

• Carry out preventive and corrective maintenance on mechanical equipment.
• Inspect, troubleshoot, repair, and overhaul pumps, motors, valves, gearboxes, compressors, and piping systems.
• Maintain RO plant equipment including high-pressure pumps and booster pumps.
• Perform equipment alignment, lubrication, and condition monitoring.
• Participate in commissioning, startup, and shutdown activities.
• Assist in root-cause analysis of equipment failures.

Skills

Mechanical maintenance

Pumps & valves

Rotating equipment

Reading drawings

CMMS usage

Education

Diploma or Technical Certificate in Mechanical Engineering

Tools

CMMS software

P&ID interpretation

Job description

Summary

We are hiring a Mechanical Maintenance Technician – Desalination for infrastructure and water sector. The role will support the safe and reliable operation of a large-scale water treatment/desalination facility, with a particular focus on mechanical maintenance of RO systems, pumps, valves, rotating equipment, and associated plant machinery.

Key Responsibilities

• Carry out preventive and corrective maintenance on mechanical equipment.
• Inspect, troubleshoot, repair, and overhaul pumps, motors, valves, gearboxes, compressors, and piping systems.
• Maintain RO plant equipment including:
  • High-pressure pumps
  • Booster pumps
  • Pressure vessels
  • RO skids and membranes
  • Filters and strainers
  • Chemical dosing systems
  • Valves and actuators
  • Heat exchangers
  • Cranes and lifting equipment
• Perform equipment alignment, lubrication, and condition monitoring.
• Participate in commissioning, startup, and shutdown activities.
• Assist in root-cause analysis of equipment failures.
• Complete maintenance reports and update CMMS/work orders.
• Coordinate with operations, electrical, and instrumentation teams.
• Follow permit-to-work procedures and HSE requirements.
• Respond to emergency breakdowns and plant call-outs when required.

Required Qualifications

• Diploma or Technical Certificate in Mechanical Engineering or Mechanical Maintenance.
• 3–5 years (or more) experience in desalination, water treatment, power plants, oil & gas, or industrial facilities.
• Experience with RO desalination systems is preferred.
• Knowledge of rotating and static equipment maintenance.
• Ability to read mechanical drawings, P&IDs, and technical manuals.
• Familiarity with maintenance management systems (CMMS).

Mechanical Technician's Key skills

1. Hands-on experience in mechanical maintenance activities, including equipment overhauling, bearing and mechanical seal replacement.
2. Experience working with centrifugal, vertical, submersible, and dosing pumps.
3. Hands-on experience in the assembly and disassembly of plug valves, butterfly valves, and check valves.
4. Knowledge of laser alignment, dial gauge measurements, and CMMS (Computerized Maintenance Management System) software.
5. Knowledge of pump vibration analysis and predictive maintenance techniques, with hands‑on experience in the assembly and disassembly of compressors and motors.
6. Working experience with PVDF and CPVC materials.
7. Experience in RO (Reverse Osmosis) systems is optional but will be considered an added advantage.