Pre-commissioning & Commissioning Engineer

Role Overview

Pre-commissioning & Commissioning Engineer at Ali & Sons Holding LLC, located in ICAD II, Mussafah, Abu Dhabi, UAE.

Company Overview

Ali & Sons Marine Engineering Factory (ASMEF) is a subsidiary of Ali & Sons Holding LLC and a leading provider of engineering, fabrication, construction, and ship repair services for the Oil & Gas and marine sectors. Established in 2009, ASMEF is located in Mussafah, Abu Dhabi, and operates one of the largest facilities in the region, comprising a 280,000m² yard and a 545m waterfront. The facility is strategically positioned as the closest yard to the Abu Dhabi Oil Fields, providing direct access to onshore and offshore operations. ASMEF delivers complex engineering, fabrication, and project execution activities with a strong focus on safety, quality, operational excellence, and compliance with client and international requirements.

Role Purpose

Plan, coordinate, and execute pre-commissioning and commissioning activities for electrical, HVAC, purge, instrumentation, and control systems in project technical buildings. Verify system readiness, safe operation, testing, acceptance, and handover by coordinating with discipline engineers, specialist contractors, clients, and OEMs.

Key Responsibilities

Planning & Documentation

• Prepare system-wise pre-commissioning and commissioning plans, checklists, test procedures, and schedules based on approved drawings, specifications, and OEM requirements.
• Maintain inspection and test records, progress reports, punch lists, and signed test sheets.
• Compile OEM documentation, test results, as-built records, and outstanding-item status into the final commissioning dossier.

Pre-Commissioning Verification

• Verify installation completeness, equipment identification, access, cleanliness, calibration status, and readiness for testing.
• Identify deficiencies and coordinate corrective actions prior to energization or start-up.
• Verify field wiring, panel connections, instrument calibration, and point-to-point checks with the E&I team.
• Verify earth values and required safety checks before energization.

Electrical & Instrumentation Testing

• Coordinate electrical inspections, cable continuity and insulation-resistance testing, earthing, and phase-sequence checks.
• Coordinate cold loop checks.
• Coordinate applicable telecommunications continuity and interface checks.
• Coordinate testing of switchgear, UPS, lighting, and small power systems, including energization, soak tests, functional tests, interface checks, and LV motor solo runs where applicable.

HVAC Systems

• Inspect HVAC equipment, ductwork, dampers, filters, drains, supports, electrical connections, and controls prior to start-up.
• Coordinate HVAC start-up, testing, balancing, and setting to work.
• Verify supply, return, fresh and exhaust airflow, room pressure, temperature, humidity, noise, room integrity, control response, and overall system performance against approved criteria.

Control & Integration Systems

• Establish system-specific commissioning prerequisites and acceptance criteria.
• Arrange OEM-supported control panel energization and Site Acceptance Testing (SAT).
• Coordinate hot loop, I/O, HMI, communication, alarm, interlock, and logic testing when connected systems are ready.
• Test purge-panel sequences, pressure alarms and trips, energization permissives, loss-of-supply responses, and restart or re-purge requirements.
• Plan and witness integrated tests involving HVAC, BMS, fire alarm, Fire & Gas (F&G), emergency shutdown, electrical distribution, and emergency power systems where applicable.
• Verify approved cause-and-effect sequences during integrated system testing.

OEM & Contractor Coordination

• Coordinate with OEMs to confirm site readiness, schedule attendance, supervise equipment start-up and functional testing, resolve technical issues, and obtain signed reports and certificates.
• Coordinate permits, isolations, test equipment, and client witnessing.

Issue Resolution & Acceptance

• Investigate failed tests, coordinate corrective actions, and arrange retesting through final acceptance.
• Coordinate client witnessing, system acceptance, and handover to the Operations team.

Qualifications & Experience

• Bachelor's degree in Electrical Engineering, Instrumentation Engineering, or a related discipline.
• Minimum 5 years of relevant experience in pre-commissioning and commissioning activities.
• Hands-on experience with electrical and instrumentation testing.
• Experience with OEM-supported equipment start-up and Site Acceptance Testing (SAT).
• Experience with HVAC system interfaces, testing, balancing, and commissioning.
• Recognized training or course in HVAC systems, testing, and commissioning.
• Experience with commissioning documentation, inspection and test records, punch lists, test sheets, and final commissioning dossiers.

Skills & Competencies

• Knowledge of electrical testing, instrumentation, control systems, BMS, PLC, and HMI interfaces.
• Familiarity with integrated testing involving HVAC, BMS, Fire Alarm, F&G, ESD, electrical distribution, and emergency power systems is preferred.
• Strong troubleshooting, coordination, communication, and problem-solving skills.
• Proficiency in English.
• Proficiency in Microsoft Office.
• Familiarity with BMS, PLC, or HMI interfaces is preferred.