Commissioning Engineer

DPS Group Global; Dublin; On-site; EUR 69,000 - 103,000; Full time

Job summary

DPS Group Global seeks a Commissioning Engineer for a major water infrastructure project in Ireland. The role involves taking facilities from mechanical completion through commissioning, start-up, performance testing and handover, in collaboration with process, automation, construction and operations teams.

You will lead commissioning procedures, verify completion, and manage startup of pumps, membrane systems and chemical dosing while ensuring safety and quality across the project.

Qualifications

• Degree in Chemical, Process, Mechanical or Electrical Engineering, or equivalent practical experience.
• Minimum 5 years' commissioning experience within water treatment, wastewater treatment, utilities, or comparable industrial process environments.
• Hands-on commissioning experience with pumps, blowers and valves.
• Experience with membrane systems (MBR, UF, RO) and chemical dosing equipment.
• Strong understanding of PLC and SCADA systems, control philosophies and P&IDs.

Responsibilities

• Prepare commissioning procedures, checklists and test documentation for systems and subsystems.
• Verify mechanical completion and carry out system walkdowns prior to commissioning handover.
• Execute cold commissioning activities including rotation checks, I/O and loop testing, and instrument/valve checks.
• Execute hot commissioning including water testing, start-up and seeding of biological processes, and commissioning of membrane/RO systems.
• Collaborate with automation engineers to test and optimise PLC/SCADA control strategies.
• Support FAT, SAT, IQ and OQ activities and manage punch-list items with suppliers.

Skills

Troubleshooting

Root-cause analysis

Site execution

Communication skills

Planning

Teamwork

Fluent English

Education

Degree in Chemical/Process/Mechanical or Electrical Engineering

Tools

PLC

SCADA

P&IDs

Job description

Our client is delivering a major industrial water infrastructure project involving the construction and commissioning of a Water Treatment Plant (WTP), Wastewater Treatment Plant (WWTP), and Water Recovery Plant (WRP). The project incorporates advanced treatment technologies designed to support sustainable water management, wastewater treatment, water reuse, and resource recovery.

Key Technologies Include

• Drum screening and dissolved air flotation (DAF) pretreatment
• Anaerobic and aerobic biological treatment systems
• Membrane Bioreactor (MBR) technology
• Ultrafiltration (UF)
• High-recovery Reverse Osmosis (RO)
• Activated carbon filtration
• Off-gas treatment systems
• Chemical dosing systems

Role Purpose

The Commissioning Engineer will be responsible for taking new water and wastewater treatment facilities from mechanical completion through commissioning, start-up, performance testing and operational handover.

Working closely with process, automation, construction and operations teams, you will ensure systems are commissioned safely, efficiently and in line with project performance requirements.

Key Responsibilities

• Prepare commissioning procedures, checklists and test documentation for systems and subsystems.
• Verify mechanical completion and carry out system walkdowns prior to commissioning handover.
• Execute cold commissioning activities including:
• Rotation checks
• I/O and loop testing
• Instrument and valve functionality checks
• Alarm and interlock testing
• Execute hot commissioning activities including:
• Water testing
• Biological process start-up and seeding
• Commissioning of membrane and reverse osmosis systems
• Chemical dosing system start-up
• Collaborate with automation engineers to test and optimise PLC and SCADA control strategies.
• Support Site Acceptance Testing (SAT), Installation Qualification (IQ) and Operational Qualification (OQ) activities.
• Manage and close commissioning punch-list items with suppliers and subcontractors.
• Coordinate specialist vendors during equipment start-up and testing phases.
• Conduct performance and reliability testing against project specifications.
• Deliver operator training and support the preparation of Operations & Maintenance (O&M) manuals and project handover documentation.

Qualifications & Experience

• Degree in Chemical, Process, Mechanical or Electrical Engineering, or equivalent practical experience.
• Minimum 5 years' commissioning experience within water treatment, wastewater treatment, utilities, or comparable industrial process environments.
• Hands-on experience commissioning:
• Pumps
• Blowers
• Valves
• Membrane systems (MBR, UF, RO)
• Chemical dosing equipment
• Experience with biological treatment process start-up, either anaerobic or aerobic, is highly desirable.
• Strong understanding of PLC and SCADA systems, control philosophies and P&IDs.
• Experience supporting FAT, SAT, IQ and OQ protocols is advantageous.
• Previous experience within food & beverage, life sciences, pharmaceutical or industrial manufacturing environments is beneficial.

Skills & Competencies

• Strong troubleshooting and root-cause analysis skills.
• Hands-on approach with the ability to work effectively in a live site environment.
• Excellent organisational and planning skills.
• Strong communication skills with the ability to engage operators, engineers, contractors and client representatives.
• Ability to work under pressure during critical commissioning and start-up phases.
• Team-oriented with a proactive attitude.
• Fluent English, both written and spoken.

Health, Safety & Quality

• Ensure all commissioning activities are carried out in accordance with permit-to-work, isolation and LOTO procedures.
• Assess and manage process safety risks prior to system energisation and start-up.
• Identify and mitigate hazards associated with chemicals, biological processes, biogas and H₂S.
• Report and investigate safety incidents, observations and near misses.
• Maintain compliance with all project health, safety, environmental and quality standards.