Senior Maintenance Technician – Wastewater Treatment Plant
Reporting to:
Maintenance Manager
Role Overview
The Senior Maintenance Technician plays a vital role in ensuring the safe, reliable, and efficient operation of a modern wastewater treatment facility.
This hands-on position involves leading preventative and corrective maintenance activities, troubleshooting mechanical and automated systems, and supporting ongoing improvements across plant operations.
The successful candidate will act as a senior technical resource within the maintenance team, contributing to equipment reliability, plant performance, and compliance with environmental and safety regulations.
This role offers clear career progression toward a Maintenance Manager position for a motivated and experienced tradesperson.
Key Responsibilities
Maintenance & Reliability
Perform preventative, predictive, and corrective maintenance on pumps, valves, gearboxes, conveyors, and other essential plant equipment.
Diagnose faults and implement effective solutions across mechanical, electrical, and automation systems.
Lead equipment upgrades, modifications, and installation projects in collaboration with engineering and operations teams.
Maintain accurate maintenance documentation using a Computerised Maintenance Management System (CMMS).
Technical Support & Continuous Improvement
Serve as a senior technical point of contact for maintenance and operations personnel.
Lead or support root cause analysis, reliability initiatives, and performance improvement activities.
Participate in asset care planning and the development of maintenance strategies.
Ensure all work is completed in compliance with health, safety, and environmental procedures.
Leadership & Collaboration
Provide guidance, mentorship, and training support to apprentices and junior technicians.
Promote a culture of safety, teamwork, and continuous learning within the maintenance department.
Work closely with operations, process, and environmental teams to optimise plant performance and maintain regulatory compliance.
Qualifications & Experience
Essential
Minimum of 3–5 years' experience in a heavy industrial, utilities, or wastewater treatment environment.
Strong troubleshooting and fault-finding capabilities in mechanical and/or automation systems.
Hands-on experience with pumps, motors, gearboxes, pneumatics, hydraulics, and control systems.
Strong organisational, communication, and teamwork skills with demonstrated leadership ability.
Full, clean driving licence and valid work authorisation for Ireland.
Desirable
Previous experience in a supervisory or team lead position.
Safety certifications such as Safe Pass, Manual Handling, First Aid, Confined Space Entry, or Working at Height.
Familiarity with SCADA, PLCs, or Building Management Systems (BMS).
Experience with boilers, CHP systems, biogas operations, and low/medium-voltage electrical systems.
Competence in using CMMS platforms or digital maintenance tools.
Trade Qualifications (One of the Following Required)
Mechanical Fitting
Mechanical Automation & Maintenance Fitting (MAMF)
General Fitting / Maintenance Technology
Electrical or Instrumentation
Construction Plant Fitting
Mechanic / Heavy Vehicle Mechanic
City & Guilds or equivalent in Mechanical Engineering