Offshore 3rd Assistant Engineer — Deepwater Rig Power

Core Group Resources; Houston (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

Core Group Resources is seeking a USCG-licensed 3rd Assistant Engineer for an offshore, deepwater drilling rig in the Gulf. The role focuses on monitoring, operating, and maintaining engine room systems to ensure continuous power and reliability in a demanding offshore environment.

Applicants should have offshore watchstanding experience on a DP vessel or drilling rig, with proficiency in diesel engines, generators, and auxiliary equipment, plus required safety certifications and medical

Qualifications

• Valid USCG 3rd Assistant Engineer Unlimited MMC or higher.
• USCG Medical Certificate with STCW OICEW / endorsements.
• Offshore watchstanding experience on a DP vessel, drilling rig, or similar installation.
• Working knowledge of diesel engines, generators, pumps, compressors, and auxiliary machinery.
• Deepwater drilling experience preferred.
• Current BOSIET/FOET/THUET certification.
• Valid RigPass or SafeGulf certification.
• TWIC card and U.S. Passport.

Responsibilities

• Stand engine room watch and assist with safe operation of the rig’s power plant and auxiliary machinery.
• Conduct machinery rounds, monitor operating parameters, and maintain logs.
• Identify abnormal equipment conditions and communicate issues to prevent downtime.
• Perform preventive maintenance, troubleshooting, and repairs on critical engine room systems.
• Support propulsion and thruster-related systems to ensure reliable power for drilling and hotel ops.
• Document maintenance activities and equipment history in the planned maintenance system.
• Participate in safety drills, emergency duties, and daily shift handovers.
• Collaborate with the technical team to maintain readiness and equipment reliability.

Skills

USCG license

Watchstanding

Diesel engines

Power plant ops

Safety compliance

Troubleshooting

Documentation

Rig crew coordination

Tools

RigPass

SafeGulf

TWIC

Job description

Core Group Resources is seeking a USCG-licensed 3rd Assistant Engineer for an offshore, deepwater drilling rig in the Gulf. The role focuses on monitoring, operating, and maintaining engine room systems to ensure continuous power and reliability in a demanding offshore environment.

Applicants should have offshore watchstanding experience on a DP vessel or drilling rig, with proficiency in diesel engines, generators, and auxiliary equipment, plus required safety certifications and medical