Subsea Commissioning Engineer

Position Overview

The Subsea Commissioning Engineer is responsible for planning and executing commissioning activities for subsea production systems — from pre-commissioning flooding and testing through to first oil. This role demands a combination of engineering rigour and practical offshore execution capability, bridging the gap between design completion and operational handover. Commissioning engineers are the last line of defence before production startup.

Key Responsibilities

• Develop subsea commissioning plans, procedures, and checklists for trees, manifolds, SURF, and controls systems.
• Plan and execute pre-commissioning activities including flooding, cleaning, gauging, hydrotesting, and dewatering of pipelines and flowlines.
• Coordinate subsea system leak testing, functional testing, and logic verification during offshore commissioning campaigns.
• Manage commissioning punch-lists, outstanding works, and system handover documentation.
• Liaise with operations teams to ensure smooth transition from project to production status.
• Support first-oil startup operations, including well unloading, production ramp-up, and system performance verification.
• Troubleshoot commissioning issues, including valve malfunctions, communication faults, and hydraulic system anomalies.
• Coordinate with marine and vessel teams for commissioning spread mobilisation and demobilisation.
• Ensure all commissioning activities comply with HSSE requirements and permit-to-work systems.
• Prepare commissioning completion dossiers, as-built documentation, and warranty notifications.

Qualifications

Required

• Education: Bachelor's degree in Mechanical, Instrumentation, or Subsea Engineering.
• Certifications: BOSIET/FOET with CA-EBS; Offshore Medical; Lifting/Rigging awareness.
• Experience: 5–10 years in subsea commissioning with direct offshore execution experience.
• Technical Skills: Knowledge of subsea system testing requirements; proficiency in commissioning management systems (WinPCS, PIMS); understanding of subsea controls, hydraulics, and production chemistry.

Preferred

• Experience with pre-commissioning of long-distance subsea flowlines and pipelines.
• Familiarity with subsea processing system commissioning (boosting, separation).
• Vendor-specific commissioning training for major subsea equipment.
• Experience in multiple geographic basins with different regulatory regimes.