What are you going to do

The Pre-Commissioning / Commissioning Manager is responsible for leading and coordinating all activities from late-stage construction through mechanical completion, system turnover, and startup-with a focus on ISBL process systems and OSBL utilities, infrastructure, and tie-ins.

This role ensures all systems are safely and systematically transitioned from construction to operations in line with project specifications and industry standards.

ISBL (Process Units):

• Own the pre-commissioning and commissioning of liquefaction trains, refrigeration systems, compressors, and process piping.
• Oversee loop checks, pressure testing, and function testing of critical process control systems.
• Interface with DCS/PLC vendors and Sempra Operations to achieve safe and compliant startup of high-risk units.

OSBL (Pipelines, Utilities, Infrastructure):

• Coordinate turnover and startup of site-wide electrical distribution, firewater, nitrogen, instrument air, and cooling water systems.
• Ensure commissioning tie-ins to flare, utilities headers, and offsite interconnects are executed safely and per schedule.

Storage Tanks:

• Manage dry-out, inerting, and cooldown activities for cryogenic LNG tanks.
• Lead coordination with OEMs and construction teams for leak testing, boil-off gas systems, and insulation readiness.
• Validate operational readiness for rollover prevention, stratification controls, and tank safety instrumentation.

Plant Utilities:

• Drive commissioning of power generation/distribution, HVAC systems, chemical dosing, potable water, and stormwater systems.
• Validate instrumentation, mechanical packages, and skids are fully tested, flushed, and preserved until ready for startup.

Essential skills and knowledge

• 15+ years in commissioning/start-up on major energy infrastructure projects.
• Deep knowledge across LNG systems including process trains, OSBL tie-ins, tanks, and utility infrastructure.
• Demonstrated success leading multi-system turnovers and first gas/startup readiness.
• Bachelor's in Mechanical, Process, Electrical, or Instrumentation Engineering.
• Professional Engineer (PE) or advanced technical degree preferred.
• Mastery of pre-commissioning best practices, walkdown execution, ITR workflows, and MC completions.
• Strong leadership of multi-discipline teams including vendors, CSU contractors, and Owner operators.
• Fluent in commissioning management software (ICAPS, Hexagon, WinPCS, etc.).
• Bilingual (English/Spanish) preferred.